[TriLUG] Server Oddness
jason at journalistic.com
Fri Jul 2 09:34:48 EDT 2004
When I came into work today, our (Debian Woody) mail server wasn't
responding (my previous SSH connection was 'hung' and IMAP/POP
connections wouldn't work and pings were not responsive, either) and I
went to the console and plugged in a monitor and it was a black screen
(hitting the space bar or enter key didn't do anything).
So I had to hit the server's reset key (ugh) ... about 15 minutes later
after the auto fsck, everything looks ok.
This is a publicly available server, so my main concern is that someone
has r00ted me. I have been keeping up to date on security patches that
Debian puts out.
I waded through logs (nothing suspicious, though there were several
attempts to do one of those "/SEARCH [long uri]" in its apache
access.log -- it was one of the last entries). In /var/log/messages, I
get a MARK every 20 minutes ... there's a big gap between the last mark
at 3:56am and when I restarted the server at 8:46. In the mail.log
file, the gap starts at 4:08, so that's when I think something happened
(I have a co-worker that POP's his mail every minute ;)).
I also ran a 'chkrootkit', but that didn't turn anything up.
I did a netstat -atu and there are a couple of entries there that I
don't know about:
tcp 0 0 *:32768 *:* LISTEN
udp 0 0 *:821 *:*
udp 0 0 *:1111 *:*
Is there any way to see what process is tied to those ports?
Can anyone point me in a direction to figure out what happened? Random
hardware glitch or something else?
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