Re: Odd iptstate entry
On Sun, Nov 17, 2002 at 11:18:25PM -0500, Stephen Gran wrote:
> Hello all,
>
> I am seeing something a little odd when I view my network connections
> with iptstate - for those who don't know it, it's kind of like top for
> network connections. This is the output:
> IPTables - State Top
> Version: 1.2.1 Sort: SrcIP s to change sorting
> Source IP Destination IP Proto State TTL
> 155.247.228.161,1025 216.158.52.108,22 tcp ESTABLISHED 82:48:12
> 192.168.0.1,631 192.168.0.255,631 udp 0:00:10
> 192.168.0.5,35574 216.158.52.98,22 tcp ESTABLISHED 119:59:59
> 192.168.0.5,32819 204.183.80.2,53 udp 0:00:48
> 192.168.0.5,35575 192.168.0.1,22 tcp ESTABLISHED 119:59:59
>
> This box is firewall/NAT for a LAN, so all the 192.168.x.x addresses are
> fine. It's the 155.x.x.x ssh'ing in that's bothering me.
>
> steve@gashuffer:~$ ps ax | grep ssh
> 237 ? S 0:00 /usr/sbin/sshd
> 23217 ? S 0:00 /usr/bin/ssh-agent sh /home/steve/.xsession
> 23310 pts/1 S 0:00 ssh mercury
> 23329 pts/2 S 0:00 ssh hadrian
> 25407 pts/3 S 0:00 grep ssh
>
> netstat only shows the 2 outgoing connections - nothing coming in. I
> kind of suspect this is a stale entry (especially with that TTL, which
> is slowly counting down, unlike the two outgoing ones) from an ssh
> session I had over the weekend, but I logged out cleanly (I thought). I
> have heard of rootkits that hide their tracks from ps and such, but over
> ssh?
Probably someone scanned you, and then left their end of the connection
hanging.
--
#define X(x,y) x##y
Peter Cordes ; e-mail: X(peter@llama.nslug. , ns.ca)
"The gods confound the man who first found out how to distinguish the hours!
Confound him, too, who in this place set up a sundial, to cut and hack
my day so wretchedly into small pieces!" -- Plautus, 200 BC
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