full-disclosure - xinetd issue..

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Message-ID: <1106855285.15072.60.camel@blackbird.tecnoera.com>
From: jpabuyer at tecnoera.com (Juan Pablo Abuyeres)
Subject: xinetd issue..

I have 2 servers running FC2, with xinetd-2.3.13-2 and
proftpd-1.2.10-8.1.fc2.dag. The ftp servers are configured to run
through xinetd.
xinetd is configured with "cps = 25 30", which is the default.
If I flood ftp connections, xinetd behaves like expected:

Jan 27 15:25:35 horus xinetd[628]: Deactivating service ftp due to
excessive incoming connections.  Restarting in 30 seconds.
Jan 27 15:26:05 horus xinetd[628]: Activating service ftp

But a few days ago, my FTP server were down, and when I checked, this is
what I found:

Jan 25 21:05:40 horus xinetd[4479]: Deactivating service ftp due to
excessive incoming connections.  Restarting in 30 seconds.
Jan 25 21:06:10 horus xinetd[4479]: bind failed (Address already in use
(errno = 98)). service = ftp
Jan 25 21:06:10 horus xinetd[4479]: Error activating service ftp
Jan 25 21:06:10 horus xinetd[32743]: Failed to contact identity server
at 83.198.168.197: timeout

Jan 26 10:00:28 horus xinetd[29729]: Service ftp: server exit with 0
running servers
Jan 26 11:35:51 horus xinetd[29729]: Deactivating service ftp due to
excessive incoming connections.  Restarting in 30 seconds.
Jan 26 11:36:21 horus xinetd[25685]: Failed to contact identity server
at 195.7.124.194: timeout
Jan 26 11:36:21 horus xinetd[29729]: bind failed (Address already in use
(errno = 98)). service = ftp
Jan 26 11:36:21 horus xinetd[29729]: Error activating service ftp

I've tried to reproduce this, with no luck. This happend on both servers
at almost the same time. They have the same install base and rpms. Can
anybody give some advice on this please?

Thank you.
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