May 1998 - Test - lists.nanog.org

NANOG 13 REMINDER
by Pam Ciesla 04 May '98

04 May '98

The block on the hotel rooms ends Wednesday, 5/6. Be sure to reserve your room. All attendees need to register via the website, if you are unable to do this please contact me. The attendee list is current. The following is the agenda so far: SUNDAY AFTERNOON TUTORIAL: Introduction to RPSL (Cengiz Alaettinoglu, ISI, Curtis Villamizar, ANS) Find out about Routing Policy Specification Language, which will succeed RIPE-181 as the language used to express policy in the Internet Routing Registry. A description of the tutorial is available HERE. SUNDAY EVENING TUTORIALS Introduction to Multicast (Dave Meyer, Cisco) Interesting Things You Can Do With OSPF (Howard Berkowitz) After an introductory overview of the OSPF interior routing protocol, Berkowitz presents some interesting case studies of useful but non-obvious things one can do with OSPF, if one is willing to think "outside the box." The tutorial concentrates on determining requirements and network design, rather than detailed configuration, emphasizing ways that a high-powered OSPF domain can be a viable alternative to BGP for many customer and internal ISP applications. Also includes information about practical address management with OSPF. QoS and Ebone: Issues and Potential Solutions (Sean Doran, Ebone) Discussion of RED/QoS issues for the Ebone. Click here for a detailed overview of the talk. Network-based Denial of Service Attacks: Descriptions and How to Protect Your Network (Craig Huegen, Cisco) Recommendations on Queue Management and Congestion Avoidance in the Internet (Van Jacobson, Lawrence Berkeley National Laboratory) What Is a VPN? (Paul Ferguson, Cisco Systems) Definition of Virtual Private Networks and overview of approaches to building VPNs. Read the paper, by Ferguson and Geoff Huston, HERE. Dial-in VPN Using Layer 3 Tunneling (Gary Malkin, Bay Networks) Review of the Virtual Private Networking topology and problem space, overview of encapsulation and tunneling, and Bay Networks's DVS solution. Broadband VPNs - Outsourcing ISP services to Cable TV and XDSL Providers (Bruce Perlmutter, Bay Networks) Data over cable TV and xDSL are technologies that are experiencing enormous growth as a means to provide high speed Internet access to consumers. Most implementations of these technologies require the cable provider to become an Internet Service Provider (ISP) - a business for which they are often ill prepared. This presentation describes an architecture that allows cable providers to outsource the ISP function to a number of partner service providers. The cable provider installs and manages the physical plant, and bills the customer for services (voice, video, data) delivered over this plant. Data traffic from these customers arrives at the cable provider head end and is routed to an Internet Service Provider (or other data network) selected by the customer. Even though the customers are connected to a common access infrastructure (XDSL or cable TV), they appear as though they are connected only to their selected ISP. This approach can be called a Virtual Private Network. Issues discussed include: IP address allocation and packet routing, accounting and authorization mechanisms, and encryption and privacy issues. Roadmap to a Distributed Registry: Transition to RPSL (Routing Policy System Language) (Cengiz Alaettinoglu, ISI, Curtis Villamizar, ANS) Differentiated Services Panel: Working Group Update and Viewpoints From the Community (Kathleen Nichols, Bay Networks, moderator; Van Jacobson, Lawrence Berkeley National Laboratory, Fred Baker. Cisco, Peter Ford, Microsoft Building Large-Scale Internet Measurement Infrastructure (Vern Paxson, Lawrence Berkeley National Laboratory) Scaling and Other New BGP Features (Mark Turner, Cisco) Recent work on BGP scaling issues, including support for peer groups over multiple IP subnets, prefix lists, neighbor route count limits, and Cisco Express Forwarding/QoS interactions. ARIN Update (Kim Hubbard, ARIN) InterNIC Update (Mark Kosters, InterNIC) Path and Round-Trip Time Measurements: a New Project at CAIDA (Daniel McRobb) Implementing Simplex IP Bandwidth Augmentation and IP-Based News and HTTP Broadcast Services via Geosynchronous Satellite (Avi Freedman, Net Access) Covers details of implementing half-duplex satellite bandwidth augmentation and news/web cache broadcast over satellite. Net Access does all three on one signal; for bandwidth augmentation, a Cascade-based solution and a Cisco IP-tunneling-based solution will be presented. Introduction to the NETPERF.NET Inter-Provider Network Performance Monitoring Project (Avi Freedman, Net Access) Sponsored by Net Access, the project deploys pairs of servers (one web server, one query box) at each provider being studied, and generates semi-real-time NxN graphs of packet loss, latency, and throughput between the various providers. All info is available on the webpage http://www.nanog.org xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx Pam Ciesla 734-936-0172 - phone Merit Network, Inc. 734-647-3185 - fax University of Michigan 4251 Plymouth Road Bldg. I, Suite C Ann Arbor, MI 48105-2785 xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

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SMURF amplifier page
by Karl Denninger 04 May '98

04 May '98

As promised, we now have a web page for this. The current smurf list is at http://www.mcs.net/smurf This will be updated roughly weekly, or whenever major changes are made to the list of blocked networks. It contains, in addition to dialogue on the Smurf issue, a list of network numbers and "whois" lookups on the owners. IF YOU APPEAR ON THIS LIST YOU CANNOT TRANSPORT PACKETS INTO OUR INFRASTRUCTURE. Instructions for what you must do to get the block removed are contained within this page. Bitching and moaning is pointless - the only fix is to FIX THE PROBLEM. Thank you! -- -- Karl Denninger (karl(a)MCS.Net)| MCSNet - Serving Chicagoland and Wisconsin http://www.mcs.net/ | T1's from $600 monthly / All Lines K56Flex/DOV | NEW! Corporate ISDN Prices dropped by up to 50%! Voice: [+1 312 803-MCS1 x219]| EXCLUSIVE NEW FEATURE ON ALL PERSONAL ACCOUNTS Fax: [+1 312 803-4929] | *SPAMBLOCK* Technology now included at no cost

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Re: SMURF AMPLIFIER BLOCK LIST -- VERY LARGE!!!!!!!!!!!!!!!
by Tim Salo 04 May '98

04 May '98

> Date: Thu, 30 Apr 1998 22:31:28 -0500 (CDT) > From: tim(a)alpha.net > Subject: Re: SMURF AMPLIFIER BLOCK LIST -- VERY LARGE!!!!!!!!!!!!!!! > To: nanog(a)merit.edu > > It'd be nice if there were a more organized effort to collect these > addresses, but for the time being, here's my list. I've actually got > a bunch more, but these are hand-picked for having a large > amplification factor and also for not appearing on the mcs.net page. > > 194.47.135 > 194.47.136 > 164.156.26 > 204.30.35 > 204.199.101 It would be interesting to see if the use of these networks as smurf aplifiers increases once they are published on nanog. (Are we doing all the hard work for the smurfers, namely creating a consolidated list of all of the known smurf amplifiers?) -tjs

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(Fwd) Re: More amplifier blocks (fwd)
by Chuck Davisson 04 May '98

04 May '98

Good point. TTSG in this case stands for Thomson Technical Services Group and has nothing to do with ttsg.com. Sorry if there was any confusion. Chuck Davisson > Hi folks, > > > 204.183.36 11 > > is mine and is now fixed. Sorry for the problem. Must have missed this > interface. > > Chuck Davisson > Network Engineer > TTSG > Ouch, TTSG, huh? Someone might think you work for us! Tuc/TTSG (ttsg.com) ---End of forwarded mail from TTSG <ttsg(a)ttsg.com>

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Clinton signs bill allowing NSF to spend Infrastructure $$
by jamie＠dilbert.ais.net 02 May '98

02 May '98

Statement by the National Science Foundation WASHINGTON, May 2 /PRNewswire/ -- The following is a statement by NSF spokeswoman Beth Gaston: The National Science Foundation is pleased that Congress has enacted, and the President has signed, a bill which enables the National Science Foundation (NSF) to use money collected in the domain name Internet Intellectual Infrastructure Fund to support Internet-related activities. The money, which totals approximately $60 million, will allow the NSF to support a large number of Next Generation Internet and related networking projects, including: support of connections to the NSF's very high performance Backbone Network Service (vBNS), research to develop applications that use high performance networking, and research into improving networking technology. SOURCE National Science Foundation (C) PR Newswire. All rights reserved. -- jamie rishaw (dal/efnet:gavroche) American Information Systems, Inc. rdm: "Religion is obsolete." gsr: "By what?" jgr: "Solaris." (1996) Tel:312.425.7140, FAX:312.425.7240

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Re: One more smurf amp fixed
by shields＠crosslink.net 02 May '98

02 May '98

In article <m0yVMPB-00002bC(a)druid.net>, darcy(a)druid.net (D'Arcy J.M. Cain) wrote: > Oh well. One by one we'll get them all. The real key is to be sure that new turnups are smurfproofed from the start. This is the same challenge as for spoofing, but easier to test. -- Shields, CrossLink.

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SMURF AMPLIFIER BLOCK LIST -- VERY LARGE!!!!!!!!!!!!!!!
by Martin, Christian 01 May '98

01 May '98

All, Here is my contribution to the block list. The script that generated this will follow. It is 'public domain', in that it can be modified, BUT, please give credit where credit is due! !!!!!NOTE: This script assumes that the offending bounce sites are /24 blocks. It isn't that smart yet, but if someone can figure out a way to glean more info, modify the script and repost. #!/bin/ksh # ------------------------------------------------------------------------ -- # @(#) File: catch.sh by Kevin A. Ho and Christian Martin Release 1.0 # # Description: This script reads a NetFlow log produced on Cisco routers # that employ NetFlow switching. The script parses the log # and generates the network address of the amplifying network. # Then, the script runs the netblock (assumes a /24 mask) # against your favorite route-server (could use a gated box # as well) and pulls the originating AS from the BGP table. # Then, it runs the AS pulled from the route server against # the "whois" query program to obtain the AS info and # other related info on the network address. # ------------------------------------------------------------------------ -- LOGFILE=$1 WHOIS=/usr/bin/whois WHOIS_SRVR=whois.ra.net ROUTE_SRVR=route-server.cerf.net TARGET=$2 case $# in 1) IPlist[0]=$1 ;; *) print "Building network address list ..." set -A IPlist `awk '{if(($5 == "01")&&($4 == TG)) print $2}' TG=$TARGET ${LOGFILE} | awk -F"." '{ printf("%s.%s.%s.0\n", $1, $2, $3)}' | sort -u` ;; esac for IPaddr in ${IPlist[*]} do print ${IPaddr} done __________________________________________ HERE IS THE LIST 10.10.100.0 10.128.14.0 10.158.36.0 10.3.0.0 10.3.1.0 10.4.0.0 100.100.1.0 12.0.40.0 12.1.9.0 12.10.2.0 12.10.6.0 12.10.7.0 12.11.0.0 12.127.114.0 12.127.192.0 12.127.240.0 12.13.1.0 12.3.0.0 12.4.5.0 12.63.7.0 12.7.2.0 125.83.77.0 127.0.0.0 128.1.21.0 128.135.111.0 128.135.113.0 128.135.115.0 128.135.117.0 128.135.168.0 128.135.2.0 128.135.253.0 128.135.4.0 128.135.47.0 128.135.61.0 128.135.70.0 128.135.76.0 128.135.91.0 128.135.99.0 128.203.208.0 128.252.152.0 128.252.221.0 128.252.223.0 128.252.233.0 128.252.234.0 128.252.7.0 128.252.84.0 128.39.0.0 128.39.16.0 128.39.3.0 128.97.172.0 128.97.173.0 128.97.21.0 129.210.11.0 129.210.208.0 129.210.209.0 129.210.210.0 129.210.211.0 129.210.40.0 129.210.42.0 129.210.43.0 129.210.8.0 129.210.84.0 129.210.87.0 129.241.181.0 129.241.200.0 130.15.1.0 130.15.8.0 130.194.225.0 130.194.25.0 130.194.31.0 130.195.2.0 130.198.253.0 130.236.252.0 130.236.254.0 130.237.1.0 130.237.245.0 130.237.247.0 130.237.28.0 130.237.32.0 130.237.72.0 130.237.9.0 130.239.136.0 130.239.5.0 130.242.100.0 130.244.10.0 130.244.12.0 130.244.136.0 130.244.16.0 130.244.2.0 130.244.24.0 130.244.25.0 130.244.3.0 130.251.21.0 130.251.86.0 130.79.200.0 130.79.23.0 130.79.32.0 130.79.36.0 131.1.183.0 131.1.184.0 131.1.185.0 131.1.186.0 131.1.187.0 131.1.188.0 131.1.189.0 131.115.126.0 131.115.184.0 131.115.185.0 131.115.189.0 131.115.47.0 131.115.48.0 131.115.49.0 131.119.16.0 131.154.1.0 131.175.223.0 131.175.238.0 131.175.242.0 131.175.57.0 131.178.1.0 131.178.38.0 131.178.60.0 134.124.99.0 134.153.2.0 134.153.240.0 134.153.80.0 134.184.1.0 134.184.129.0 134.184.15.0 134.184.250.0 134.184.30.0 134.184.31.0 134.184.32.0 134.184.66.0 134.222.12.0 134.222.2.0 134.222.200.0 134.222.28.0 134.222.30.0 134.58.24.0 134.58.25.0 134.58.255.0 134.58.40.0 134.58.41.0 134.58.43.0 134.58.45.0 134.58.61.0 134.59.1.0 134.87.109.0 134.87.18.0 134.87.96.0 134.87.98.0 134.92.229.0 137.121.1.0 137.121.254.0 137.204.64.0 137.39.139.0 137.39.178.0 138.195.33.0 138.200.111.0 138.200.65.0 138.200.66.0 138.200.68.0 138.200.70.0 138.200.77.0 138.73.1.0 139.130.1.0 139.130.10.0 139.130.120.0 139.130.128.0 139.130.159.0 139.130.2.0 139.130.3.0 139.130.43.0 139.130.48.0 139.130.6.0 139.130.64.0 139.130.65.0 139.130.76.0 139.130.79.0 139.165.30.0 139.165.32.0 139.165.40.0 139.223.200.0 139.3.63.0 139.4.26.0 139.57.16.0 139.58.230.0 140.127.240.0 140.78.1.0 140.78.127.0 140.78.222.0 140.78.223.0 140.78.93.0 140.96.70.0 141.108.220.0 141.108.253.0 141.66.176.0 142.103.3.0 142.132.1.0 142.165.5.0 142.22.218.0 142.232.83.0 142.232.84.0 142.51.1.0 142.58.12.0 142.58.145.0 142.74.1.0 143.169.5.0 143.225.190.0 143.233.122.0 143.233.123.0 143.43.128.0 143.43.130.0 143.43.131.0 143.43.133.0 143.43.3.0 144.228.131.0 144.85.1.0 144.85.10.0 144.85.200.0 144.85.207.0 144.85.3.0 145.228.110.0 145.228.114.0 145.228.200.0 145.228.222.0 145.228.95.0 146.83.1.0 147.102.12.0 147.102.13.0 147.102.222.0 147.151.103.0 147.151.171.0 147.162.1.0 147.162.199.0 147.162.8.0 147.162.99.0 147.211.45.0 147.211.55.0 147.250.1.0 147.83.124.0 147.83.32.0 147.83.4.0 147.83.41.0 147.91.1.0 147.91.8.0 147.96.1.0 147.96.10.0 147.96.100.0 147.96.19.0 147.96.20.0 147.96.21.0 147.96.22.0 147.96.23.0 147.96.24.0 147.96.25.0 147.96.3.0 147.96.33.0 147.96.37.0 147.96.4.0 147.96.42.0 147.96.5.0 147.96.6.0 147.96.90.0 148.202.1.0 148.202.2.0 148.202.3.0 148.202.34.0 148.202.4.0 148.202.5.0 148.202.8.0 148.202.93.0 148.206.128.0 148.206.32.0 148.207.1.0 148.207.10.0 148.207.100.0 148.207.104.0 148.207.2.0 148.207.20.0 148.207.25.0 148.207.38.0 148.207.40.0 148.214.12.0 148.214.13.0 148.225.14.0 149.142.172.0 149.142.47.0 150.146.201.0 150.146.5.0 150.162.1.0 150.162.237.0 150.162.248.0 150.162.254.0 150.163.130.0 150.210.23.0 150.210.24.0 150.210.25.0 150.210.26.0 150.210.3.0 150.210.33.0 150.214.110.0 150.214.112.0 150.214.115.0 150.214.163.0 150.214.169.0 150.214.218.0 150.214.231.0 150.214.32.0 150.214.35.0 150.214.69.0 151.99.0.0 151.99.107.0 151.99.155.0 151.99.48.0 152.74.49.0 152.74.52.0 152.84.100.0 152.84.254.0 154.11.136.0 154.11.8.0 155.105.102.0 155.105.2.0 155.105.255.0 155.105.3.0 155.207.100.0 155.207.112.0 155.207.18.0 155.207.19.0 155.207.199.0 155.207.26.0 155.207.30.0 156.14.1.0 156.14.20.0 156.14.254.0 156.14.30.0 157.130.0.0 157.130.225.0 157.130.33.0 157.130.5.0 157.138.1.0 157.138.115.0 157.161.254.0 157.169.10.0 157.27.32.0 157.27.6.0 157.88.142.0 157.88.143.0 157.88.31.0 157.92.1.0 158.122.64.0 158.122.65.0 158.122.90.0 158.227.6.0 158.251.1.0 158.251.12.0 158.251.16.0 158.251.17.0 158.251.18.0 158.251.19.0 158.251.20.0 158.251.250.0 158.251.3.0 158.251.4.0 158.37.1.0 158.47.18.0 158.47.4.0 158.49.129.0 158.49.133.0 158.49.134.0 158.49.137.0 158.49.247.0 159.84.12.0 160.97.1.0 160.97.225.0 160.97.4.0 160.97.5.0 160.97.52.0 161.142.0.0 161.142.100.0 161.142.2.0 161.142.227.0 161.142.24.0 161.142.8.0 163.117.131.0 163.13.1.0 163.13.140.0 163.13.141.0 163.15.250.0 163.15.252.0 163.179.230.0 163.9.4.0 164.128.116.0 164.128.119.0 164.128.122.0 164.128.123.0 164.128.57.0 164.128.81.0 164.15.44.0 164.15.89.0 164.41.2.0 165.154.1.0 165.154.105.0 165.154.140.0 166.48.38.0 168.8.16.0 169.226.116.0 169.226.2.0 169.226.23.0 169.226.28.0 169.226.38.0 169.226.4.0 170.210.0.0 172.16.0.0 172.16.1.0 172.16.2.0 172.16.4.0 172.17.50.0 172.21.10.0 172.31.7.0 18.26.0.0 192.0.1.0 192.100.161.0 192.100.180.0 192.100.181.0 192.106.1.0 192.106.7.0 192.107.131.0 192.107.51.0 192.107.52.0 192.107.53.0 192.108.114.0 192.109.80.0 192.109.81.0 192.12.77.0 192.121.120.0 192.121.83.0 192.129.50.0 192.132.41.0 192.134.106.0 192.134.130.0 192.134.192.0 192.135.34.0 192.135.68.0 192.139.190.0 192.139.196.0 192.139.197.0 192.139.230.0 192.139.245.0 192.147.246.0 192.148.167.0 192.150.75.0 192.159.121.0 192.16.137.0 192.165.120.0 192.165.146.0 192.165.243.0 192.167.13.0 192.167.192.0 192.167.198.0 192.168.0.0 192.168.1.0 192.168.10.0 192.168.11.0 192.168.122.0 192.168.162.0 192.168.168.0 192.168.177.0 192.168.191.0 192.168.199.0 192.168.2.0 192.168.203.0 192.168.21.0 192.168.250.0 192.168.5.0 192.168.6.0 192.168.66.0 192.176.122.0 192.190.209.0 192.197.60.0 192.2.200.0 192.228.128.0 192.33.182.0 192.36.60.0 192.36.97.0 192.4.0.0 192.41.218.0 192.44.77.0 192.5.82.0 192.54.144.0 192.54.174.0 192.54.188.0 192.54.242.0 192.6.5.0 192.65.91.0 192.67.248.0 192.68.63.0 192.70.23.0 192.70.34.0 192.70.57.0 192.70.82.0 192.70.87.0 192.70.98.0 192.71.157.0 192.71.57.0 192.72.111.0 192.72.151.0 192.72.24.0 192.72.33.0 192.75.204.0 192.75.205.0 192.75.62.0 192.82.124.0 192.83.196.0 192.84.152.0 192.89.123.0 192.93.29.0 192.93.74.0 192.93.8.0 192.93.80.0 192.93.82.0 192.95.223.0 193.10.48.0 193.10.49.0 193.10.50.0 193.10.62.0 193.103.148.0 193.103.168.0 193.104.101.0 193.105.56.0 193.114.246.0 193.118.192.0 193.118.200.0 193.12.151.0 193.12.69.0 193.12.71.0 193.122.87.0 193.127.1.0 193.13.131.0 193.13.144.0 193.14.104.0 193.14.11.0 193.14.29.0 193.14.68.0 193.141.156.0 193.141.171.0 193.141.232.0 193.141.241.0 193.141.75.0 193.141.76.0 193.141.77.0 193.141.78.0 193.144.75.0 193.145.132.0 193.145.133.0 193.145.222.0 193.145.248.0 193.145.254.0 193.145.40.0 193.145.41.0 193.145.54.0 193.145.59.0 193.145.60.0 193.145.61.0 193.146.95.0 193.15.20.0 193.15.241.0 193.15.55.0 193.15.86.0 193.156.89.0 193.156.92.0 193.158.124.0 193.164.160.0 193.164.161.0 193.164.172.0 193.170.33.0 193.170.35.0 193.171.114.0 193.171.20.0 193.171.22.0 193.180.104.0 193.182.172.0 193.189.224.0 193.189.241.0 193.189.249.0 193.190.10.0 193.190.144.0 193.190.170.0 193.190.171.0 193.190.192.0 193.190.194.0 193.190.196.0 193.190.197.0 193.190.2.0 193.190.231.0 193.190.249.0 193.192.192.0 193.192.193.0 193.192.199.0 193.192.200.0 193.192.206.0 193.192.225.0 193.192.23.0 193.204.120.0 193.204.16.0 193.204.191.0 193.204.208.0 193.204.210.0 193.204.30.0 193.204.64.0 193.205.160.0 193.205.165.0 193.205.189.0 193.205.190.0 193.216.236.0 193.216.250.0 193.252.19.0 193.252.235.0 193.252.252.0 193.36.32.0 193.36.37.0 193.38.83.0 193.38.84.0 193.43.43.0 193.43.44.0 193.44.236.0 193.44.5.0 193.44.90.0 193.45.158.0 193.45.251.0 193.45.79.0 193.48.145.0 193.48.168.0 193.48.198.0 193.48.200.0 193.48.226.0 193.48.24.0 193.48.241.0 193.48.39.0 193.48.40.0 193.48.45.0 193.48.75.0 193.49.105.0 193.49.112.0 193.49.164.0 193.49.205.0 193.49.29.0 193.49.67.0 193.5.152.0 193.5.153.0 193.5.154.0 193.5.54.0 193.5.56.0 193.50.217.0 193.50.225.0 193.50.235.0 193.51.104.0 193.51.105.0 193.51.136.0 193.51.198.0 193.51.80.0 193.51.86.0 193.52.10.0 193.52.211.0 193.52.223.0 193.52.72.0 193.52.80.0 193.52.81.0 193.54.185.0 193.54.208.0 193.54.232.0 193.54.238.0 193.54.42.0 193.54.98.0 193.55.218.0 193.55.220.0 193.55.96.0 193.56.4.0 193.71.3.0 193.74.243.0 193.80.12.0 193.80.60.0 193.90.64.0 193.92.3.0 193.98.1.0 193.98.110.0 193.98.230.0 193.98.9.0 193.98.90.0 194.103.200.0 194.103.205.0 194.106.165.0 194.106.254.0 194.109.7.0 194.109.9.0 194.115.115.0 194.115.128.0 194.117.203.0 194.117.204.0 194.118.1.0 194.118.23.0 194.118.26.0 194.119.216.0 194.119.225.0 194.119.228.0 194.120.12.0 194.120.124.0 194.120.40.0 194.122.108.0 194.122.231.0 194.122.236.0 194.122.240.0 194.123.81.0 194.133.98.0 194.134.5.0 194.137.236.0 194.137.237.0 194.139.104.0 194.148.1.0 194.158.141.0 194.158.154.0 194.158.155.0 194.158.96.0 194.158.97.0 194.16.110.0 194.16.184.0 194.16.186.0 194.16.190.0 194.16.2.0 194.16.207.0 194.16.50.0 194.162.192.0 194.162.200.0 194.162.25.0 194.162.252.0 194.162.253.0 194.162.254.0 194.162.27.0 194.162.29.0 194.162.66.0 194.162.73.0 194.163.184.0 194.164.0.0 194.164.70.0 194.167.133.0 194.167.136.0 194.167.138.0 194.167.139.0 194.167.147.0 194.167.148.0 194.167.195.0 194.168.23.0 194.168.7.0 194.17.121.0 194.17.162.0 194.17.163.0 194.17.177.0 194.172.112.0 194.174.238.0 194.174.252.0 194.175.112.0 194.175.173.0 194.177.121.0 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209.91.128.0 210.208.232.0 210.209.7.0 210.64.123.0 210.64.98.0 210.65.13.0 210.65.231.0 210.67.33.0 210.67.40.0 210.68.182.0 210.68.85.0 212.29.0.0 62.156.145.0 62.20.26.0 62.20.27.0 62.52.64.0 62.52.65.0 62.52.66.0 97.3.0.0 97.5.2.0

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pacbell sales rep
by andrew khoo 01 May '98

01 May '98

can someone recommend a clueful pacbell sales rep who can help me order multiple T1s in the 650-617 area?

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Two renumbering questions
by John R Levine 01 May '98

01 May '98

My ISP is changing upstreams for a variety of reasons around May 18th. 1. I have a /24 SWIPed to me, 205.238.207.0. The ARIN listing doesn't say it's non-portable, so can I take it with me? And if I do, how likely is it that the new ISP's announcement will get installed in backbone routers rather than filtered for being too long? It's right in the middle of the old upstream's block 205.238.192/18. 2. Assuming I have to renumber, I have a whole bunch of virtual domains all DNS served from one server in the renumbered space called ivan.iecc.com. (There's other servers elsewhere that won't get renumbered.) If I tell the Internic that ivan's host number has changed, will that update all the domains served from it? TIA. Regards, John Levine, johnl(a)iecc.com, Primary Perpetrator of "The Internet for Dummies", Information Superhighwayman wanna-be, http://iecc.com/johnl, Sewer Commissioner Finger for PGP key, f'print = 3A 5B D0 3F D9 A0 6A A4 2D AC 1E 9E A6 36 A3 47

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RE: Network Operators and smurf
by Doug Stanfield 01 May '98

01 May '98

Don't assume it's not needed for the 75xx, or anything else for that matter. Many networks are single connected to routers that are also acting multihomed to core providers and these boxes are being used. Doug Stanfield Oceanic Cable Data Networking Manager 200 Akamainui St. dougs(a)oceanic.com Mililani, HI 96789 Usially the low-end traffic is symmetrical. The problem is that CEF code and other anty-frauding realisations are appearing for the high-end routers, white they are nessesary for the low-end routers and useless for the core routers. For cisco, we need this future for 4500/4700/3640/2511 ASAP, 720x slightly, and don't need it for 75xx at all. On Sat, 25 Apr 1998, Al Reuben wrote: > Date: Sat, 25 Apr 1998 12:30:50 -0400 (EDT) > From: Al Reuben <alex(a)nac.net> > To: Havard.Eidnes(a)runit.sintef.no > Cc: jra(a)scfn.thpl.lib.fl.us, nanog(a)merit.edu > Subject: Re: Network Operators and smurf > > > > This should (naturally) be implemented where routing is symmetric > > and where a "reverse-path check" (looking up the source address in > > the routing table to find the "expected" incoming interface and > > checking whether the packet did indeed enter through that interface) > > The big question is, what do you do if most of your traffic _is_ > asymetrical? I mean, a more basic check could be, "Does the network that > this packet was sourced from exist *at all*?", or "Do I have a route back > to the source network through *any* interface?" > > That would cut down on a good amount of spoofing, like the idiots who > spoof from 1.1.1.1 etc. > > > Aleksei Roudnev, Network Operations Center, Relcom, Moscow (+7 095) 194-19-95 (Network Operations Center Hot Line),(+7 095) 239-10-10, N 13729 (pager) (+7 095) 196-72-12 (Support), (+7 095) 194-33-28 (Fax)

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