[squid-users] How do I DOS-proof my cache

From: David Young <david@dont-contact.us>
Date: Thu, 17 Apr 2008 12:07:21 +1200

Hey Squid users :)

We had a problem recently where a user with a misconfigured download
accelerator was able to bring our proxy to its knees, downloading an
80MB driver about 100 times in parallel. We temporarily solved the
problem by stopping the download accelerator, but this makes me aware
of how vulnerable our proxy is to heavy DOS-type attacks.

I've read a bit about the partial object caching expected in 3.1,
range_offset, and half-closed clients. Can anybody share some ideas
for making a squid cache more resilient to this kind of abuse / attack?

- David
Received on Tue Apr 22 2008 - 16:14:13 MDT

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