Re: [suse-security] Strange log entries

[Brad Bendily <brad@xxxxxxxx>]

> 211.136.182.106:46312/80 shrinks window 3980592615:3980594075. Repaired.
> Oct 5 19:38:43 linux2 kernel: klogd 1.4.1, ---------- state change 
> ----------
> Oct 5 19:38:43 linux2 kernel: Inspecting /boot/System.map-2.4.20-64GB-SMP
> Oct 5 19:38:43 linux2 kernel: Loaded 21295 symbols from 
> /boot/System.map-2.4.20-64GB-SMP.
> Oct 5 19:38:43 linux2 kernel: Symbols match kernel version 2.4.20.
> Oct 5 19:38:43 linux2 kernel: Loaded 1624 symbols from 31 modules.
> Oct 5 19:38:44 linux2 kernel: TCP: Treason uncloaked! Peer 
> 211.136.182.106:46312/80 shrinks window 3980592615:3980594075. Repaired.
> Oct 5 19:38:46 linux2 kernel: TCP: Treason uncloaked! Peer 
> 211.136.182.106:46312/80 shrinks window 3980592615:3980594075. Repaired.
> 
> 
> Not sure what this means. 
> 
> When I found these this morning, I went snooping on the system.  
> rkhunter and chkrootkit show nothing unusual.  I don't see anything 
> unusual anywhere except netstat showed a bunch of connects to tcp port 
> 22 from 218.103.185.218 in TimeWait state.  They went away after I 
> restarted NCFTPD(yes, I am using a third party ftp server) a couple of 
> times.  Not sure if these are related or if someone was trying a DoS 
> attack on ftp.

Port 22 is usually ssh, unless you changed this in your FTP configs?

Port 21 is the standard FTP port.

BB


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