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ipf icmp types?
- To: misc_(_at_)_openbsd_(_dot_)_org
- Subject: ipf icmp types?
- From: Seth Arnold <sarnold_(_at_)_willamette_(_dot_)_edu>
- Date: Thu, 30 Nov 2000 00:16:49 -0800
- Mail-followup-to: misc_(_at_)_openbsd_(_dot_)_org
once in a while, every few minutes I think, ipf puts something
similar to these entries into my logs:
Nov 30 00:16:53 sarnold ipmon: 00:16:52.616440 xl1 @0:11 b 184.108.40.206 -> 220.127.116.11 PR icmp len 20 28 icmp 8/0 IN
Nov 30 00:16:59 sarnold ipmon: 00:16:58.935545 xl1 @0:11 b 18.104.22.168 -> 22.214.171.124 PR icmp len 20 32 icmp 8/0 IN
Nov 30 00:17:25 sarnold ipmon: 00:17:25.092178 xl1 @0:11 b 126.96.36.199 -> 188.8.131.52 PR icmp len 20 28 icmp 8/0 IN
RFC 792 suggests ICMP 8/0 is an echo reply. This I suppose is all well
and good, but why on earth are these machines replying? It isn't often I
send pings out -- certainly not this often. Once every few weeks is more
like it. :)
Any suggestions what this means?
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