nanog mailing list archives
Re: Worm probes
From: Daniel Senie <dts () senie com>
Date: Tue, 18 Sep 2001 13:26:53 -0400
At 12:51 PM 9/18/01, Joseph McDonald wrote:
spc> Has anyone else been seeing a dramatic increase in /scripts/.. NT wormspc> probes this morning? We're seeing about 8000/second, starting around 9:15Yes. We are seeing it here bigtime. Does anyone have any apache hacks to lessen the impact? One idea: Once a probe is sent, the prober's IP# is stored in a hash (perhaps in shared memory or a mmap'd file that all children can share) and new connections from that IP are no longer accepted.
Or better: script which causes a filter rule to be added to ipchains list, blocking all ports.
----------------------------------------------------------------- Daniel Senie dts () senie com Amaranth Networks Inc. http://www.amaranth.com
Current thread:
- Re: Worm probes, (continued)
- Re: Worm probes Bill Larson (Sep 18)
- Re: Worm probes sigma (Sep 18)
- Re: Worm probes Valdis . Kletnieks (Sep 18)
- RE: Worm probes Eric Germann (Sep 18)
- Re: Worm probes Ulf Zimmermann (Sep 18)
- Re: Worm probes k claffy (Sep 18)
- Re: Worm probes Joe Abley (Sep 18)
- Re: Worm probes Daniel Senie (Sep 18)
- Re: Worm probes Iljitsch van Beijnum (Sep 18)
- Re: Worm probes M. David Leonard (Sep 19)
- Re: Worm probes Brett Frankenberger (Sep 19)
- Re: Re[2]: Worm probes Nick Thompson (Sep 18)
- Re: Re[2]: Worm probes Rafi Sadowsky (Sep 18)