August 1999 - Test - lists.nanog.org

Re: Large-datagram hop-by-hop delivery mechanism
by mark＠vielle.datasys.net 04 Aug '99

04 Aug '99

: mark(a)vielle.datasys.NET (Mark R. Lindsey) writes: : >I am seeking a mechanism for reliable delivery of large blobs through a : >network of occasionally-connected hosts that can forward the blobs using : >available transport protocols. Sean Donelan writes: : A much simplier solution is to use "e-mail" as the transport layer and to : encapsulate a simple method of detecting missing and duplicate messages : (e.g. a message serial number). Your application will need to have some : method of signaling when a message needs to be retransmitted. I like the idea of using email. Occasionally, though, an alternate transport layer will be necessary, and I'd hope that the endpoints wouldn't have to know too much about it. Based on the email I've gotten, it looks like lots of people have tried to solve this. Would anybody be interested in an informal working group? Let me know, if so. If nothing else, I'd appreciate some review of my draft specification.

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Re: ATTWS.com No DNS entry
by Reid Fishler 04 Aug '99

04 Aug '99

It's not for me...It just hangs on the second screen....I have been trying to renew a domain all day! Reid Fishler At 05:29 PM 8/4/99 -0400, Michael C. Toren wrote: > > Did internic screw up again? > > > > ATTWS.com has no dns entry. Even in A.Root-servers.net . Any ideas? > >It appears to be on hold for non-payment. For a change, >https://payments.networksolutions.com is working. > >-mct > >-- >Michael Toren <mct(a)netaxs.com>

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Re: Large-datagram hop-by-hop delivery mechanism
by Sean Donelan 04 Aug '99

04 Aug '99

mark(a)vielle.datasys.NET (Mark R. Lindsey) writes: >I am seeking a mechanism for reliable delivery of large blobs through a >network of occasionally-connected hosts that can forward the blobs using >available transport protocols. The phrase "reliable delivery" throws a kink in things. The Inter-Library Loan protocol does this for some definition of "reliable." It is also amazingly complex and obtuse because it tries to deal with every possibility. And most people won't like it because it was originally an OSI protocol. A much simplier solution is to use "e-mail" as the transport layer and to encapsulate a simple method of detecting missing and duplicate messages (e.g. a message serial number). Your application will need to have some method of signaling when a message needs to be retransmitted. A simple return-receipt is usually not sufficient. I have seen several applications which did this, but I don't recall any general purpose standard or RFC. E-mail has a long history, and gateways exist for almost every network protocol in existance, including most store-and-forward protocols (BITNET, UUCP, FIDONET, X.25, DECNET, etc). The MIME folks did a great job coming up with a way to encapsulate almost anything in a mail message. The trick is decapsulating it :-) -- Sean Donelan, Data Research Associates, Inc, St. Louis, MO Affiliation given for identification not representation

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RE: Large-datagram hop-by-hop delivery mechanism
by Mohler, Jeff 04 Aug '99

04 Aug '99

>I am seeking a mechanism for reliable delivery of large blobs through a >network of occasionally-connected hosts that can forward the blobs using >available transport protocols. > >I can't find it, though. Most of the networking materials I can find >deal more with immediate-transmission networks, where the destination >host is reachable at the instant that the source host transmits. (This >isn't a catenet.) > >If anyone knows of such a common or standardized system, please drop me >a note. sounds to me like email, where the sending host tries again and again over a defined period of time to delivery data. no? --- Or (God help us) UUCP if scheduling is a factor.

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SYN spoofing
by bandregg＠redhat.com 04 Aug '99

04 Aug '99

This past weekend I was contacted by several groups ranging from NASA to a small service provider in the Bay area regarding one of our hosts port scanning their networks using RESET packets. In each of these cases the machine seemed to be scanning random addresses in their networks on random, non-reserved (+1024), ports. After investigating these claims it appears as if someone is sending SYN packets to this machine (which serves ftp, which explains why the ports are open through the cisco) with a spoofed source address causing the machine to send RESET packets back to the spoofed host and setting off their firewalls. I cannot seem to get past level-1 or level-2 support from my upstream, GTE/BBN to find out where these packets are coming from to track this down. So, I come to you... Two currently on-going attacks are using the spoofed source addresses from the networks 134.50.x.x and 130.221.x.x. If you see activity from these networks inside of your borders, but the networks are not inside of your borders please contact me off of the list. Oh yeah, and filter this stuff out people, this is unacceptible. -- Bryan C. Andregg * <bandregg(a)redhat.com> * Red Hat, Inc. 1024/625FA2C5 F5 F3 DC 2E 8E AF 26 B0 2C 31 78 C2 6C FB 02 77 1024/0x46E7A8A2 46EB 61B1 71BD 2960 723C 38B6 21E4 23CC 46E7 A8A2

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Re: more internic fun, and an idea
by Dan Bustillos - Datalink Computer Services 04 Aug '99

04 Aug '99

Hey all, I started a domain change on 6-28-99. It took 3 more tries and a call on 7-28-99 to get anything done. Their excuse: Uh. We have had a backlog and it is taking extra time to process. Did they forget to change the excuse of the day calander or something. I can understand 2 weeks at the most to process these simple changes. But, they seem to take a lot longer when ever they feel like it. Also, if you ever decide to call them call 703-742-0400 . This is the Admin office. Just ask for customer service and you get right through. I have never had a busy signal or had to wait more than 3 minutes. Thank you, Dan Bustillos Datalink Computer Services (530) 897-6400 (888) 328-4638 ******************* "Error, No Keyboard - Press F1 to continue" Only on a PC would you see this error. Never on my mac.

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by Joyce 03 Aug '99

03 Aug '99

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Cable & Wireless Outage
by Jeffrey Meltzer 03 Aug '99

03 Aug '99

Just found out that CWI had 9 DS3's down for about 1/2 hour around 3:30pm EST today. The circuts connected NYC, Chicago, Philadelphia and Washington DC Jeffrey Meltzer Sr. Network Administrator VillageNet, Inc. http://www.villagenet.com

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Re: core router down
by Sean Donelan 03 Aug '99

03 Aug '99

linneweh(a)concentric.NET (Henry R. Linneweh) writes: > >globalcenter core router takes a dump 0730am PDT Yeah, FGC has had a run of these. The Associated Press did a story a few weeks ago about it. I haven't been posting about them because FGC has been pretty good about giving out information about the problem when I call them, even when I didn't identify myself. -- Sean Donelan, Data Research Associates, Inc, St. Louis, MO Affiliation given for identification not representation

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core router down
by Henry R. Linneweh 03 Aug '99

03 Aug '99

globalcenter core router takes a dump 0730am PDT

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