North American Network Operators Group

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Re: TCP session disconnection caused by Code Red?

  • From: mike harrison
  • Date: Mon Aug 06 14:34:34 2001

> For the last few days, our network seems to be basically unreachable from the
> outside. Most incoming TCP sessions (web requests, incoming mail, telnet
> sessions, etc.) often fail with a simple "Connection refused" like nobody is

Your routers are brain dead from the load.. routers that are used to
handling a few thousand connections are being asked to handle 10's of
thousands. 1 good 1000+ address scan from an ISDN user kills my
Lucent/Ascend TNT unless we filter for it.