Weird ICMP packets being logged
I'm having a bizarre set of ICMP packets coming to me, of the
"Destination Unreachable" type. This seems to happen every minute or
so, even when nobody is logged in.
My question for you is: How can I find out why these are happening?
Presumably they are in some way due to what my box is doing, but I
have no idea why.
Another bizarre point is that the machine in question (the one sending
the "Destination Unreachable" messages to me) seems to have nothing to
do with the running of my box. It is not a YP server, NFS, or
anything.
Any light you could shed on this would be very gratefully received.
toast:/var/log# icmpinfo -vvv
icmpinfo: Icmp monitoring in progress...
Feb 16 11:39:40 ICMP_Dest_Unreachable[Port] < 129.234.5.23 [perak.dur.ac.uk] > 1
29.234.5.23 [perak.dur.ac.uk] sp=35328 dp=138 seq=0x00ee3b67 sz=36(+20)
0000 : 4500 0038 FDEE 0000 FE01 75CE 81EA 0517 E..8......u.....
0010 : 81EA 401C 0303 D641 0000 0000 4500 0102 ..@....A....E...
0020 : 3A36 0000 :6..
Feb 16 11:39:41 ICMP_Dest_Unreachable[Port] < 129.234.5.23 [perak.dur.ac.uk] > 1
29.234.5.23 [perak.dur.ac.uk] sp=35328 dp=138 seq=0x00d69be6 sz=36(+20)
0000 : 4500 0038 FDEF 0000 FE01 75CD 81EA 0517 E..8......u.....
0010 : 81EA 401C 0303 75EF 0000 0000 4500 00EA ..@...u.....E...
0020 : 3A39 0000 :9..
Cheers,
Andrew Stribblehill
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