We have experienced high load on one of our web servers lately (Apache 2.0.59 on Linux). So, I started thinking about how to analyze this in a bit more detail. We are running multiple virtual hosts (around 60) so when using tcpdump it is not easy to see which URLs are requested, therefore I looked around for some HTTP-oriented sniffer. My search ended with “urlsnarf” from the “dsniff” package.

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