Hi,
I suddenly found my FTP was down and here in it is running as an xinetd daemon. I restarted it and it is up. I want to find out the cause of the down.
here is the logs:
Oct 23 08:25:22 admin xinetd[3297]: warning: can't get client address: Connection reset by peer
Oct 23 11:51:15 admin xinetd[32192]: warning: can't get client address: Connection reset by peer
Oct 23 12:23:30 admin xinetd[3641]: warning: can't get client address: Connection reset by peer
Oct 23 16:27:22 admin xinetd[20375]: warning: can't get client address: Connection reset by peer
Oct 24 04:38:29 admin xinetd[19824]: warning: can't get client address: Connection reset by peer
Oct 24 15:40:46 admin xinetd[9330]: warning: can't get client address: Connection reset by peer
Oct 25 00:18:27 admin xinetd[32675]: warning: can't get client address: Connection reset by peer
Oct 25 02:46:19 admin xinetd[20189]: 20189 {general_handler} (20189) Unexpected signal: 11 (Segmentation fault)
Oct 25 02:46:19 admin xinetd[20189]: 20189 {bad_signal} Received 50 bad signals. Exiting...
Oct 25 22:03:53 admin xinetd: xinetd shutdown failed
Oct 25 22:03:54 admin xinetd: xinetd startup succeeded

Any suggestions.
Thanks in advance.

If that is all there is in the Xinetd (and FTPd?) logs you'll need to make it / them log verbose. If this is not a "free for all" site you may want to review and tighten access to services through a combination of xinetd configuration file directive, hosts.{allow,deny} and firewall. Iptables can also help you just log things if you don't want to or can not block, and an IDS like Snort can help pinpoint people trying to gain access over the 'net using sploits.