RE: [squid-users] Squid stops responding after a number of requests

It looks like ur client has been infected with some new virus like Welchia.
It generates random packet out to port 80 and easy to make squid hang :>
like http://aaa/ http://aab/ or etc ...


-----Original Message-----
From: Henrik Nordstrom [mailto:hno@squid-cache.org]
Sent: Sunday, April 18, 2004 09:22 AM
To: Anthony Ogburn
Cc: squid-users@squid-cache.org
Subject: Re: [squid-users] Squid stops responding after a number of requests

On Fri, 16 Apr 2004, Anthony Ogburn wrote:

> The problem is that after running squid for a period of time, it stops
> responding. Squid is still running and accepting connections, which
> are logged to access.log, but it never answers back. A restart of
> squid will clear the problem, but after a number of restarts, the
> entire system must be rebooted to correct the problem. It appears the
> problem is tied to the DNS. Running "squidclient mgr:idns" shows an
> increasing number of DNS queries, but no responses.

Use tcpdump to inspect what the DNS traffic looks like. Also verify this on
the DNS server (assuming you have a local DNS server).

From your description it sounds like there is a firewall problem blocking
DNS access after a while. Restarting Squid may help to such problems as a
new UDP port is then allocated for DNS queries.

Regards
Henrik