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Analyzing Proxy Log Files

Computer forensics discussion. Please ensure that your post is not better suited to one of the forums below (if it is, please post it there instead!)
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Analyzing Proxy Log Files

Post Posted: Mar 23, 06 02:38

Does anyone know of a decent, free tool that has the ability to analyze proxy log reports that are exported in .txt files? What I am looking for is some type of user-friendly tool that can parse .txt proxy log files and give me a rough idea of a particular user's internet activity during working hours. I don't want to do it manually!  

Senior Member

Re: Analyzing Proxy Log Files

Post Posted: Mar 23, 06 04:56


I am often tasked with searching proxy logs and making them more "readable". In order to accomplish this, I typically use something called, "Cygwin". It's a command prompt app that is based on Linux, but made for Windows.
You can download it for free at Cygwin.com .

The catch with Cygwin is that you need to know how to use regular expressions. I'm sure that there are other apps that will give you easy-to-use graphical user interfaces, but Cygwin is a very robust tool, as long as you can understand some of the basic regular expressions. Here is a good website to introduce regular expressions if you are interested>>>> sitescooper.org/tao_regexps.html

Also, commands like "cut" and "grep" are very helpful for finding and extracting information like user id's, IP addresses, and search terms.

Good luck, and let me know if you need a hand.

Senior Member

Re: Analyzing Proxy Log Files

Post Posted: Mar 23, 06 20:05

What proxy server are you running?  


Re: Analyzing Proxy Log Files

Post Posted: Mar 23, 06 22:33

If you email me with a sample file to work with and explain how you want the results I'll write and publish a small freeware Windows application for you. If there are variations in the different file formats send me a sample proxy log of each type with a way for me to identify which is which. Give me an idea of everything you'd like it to do and I'll probably throw in some extra cool stuff too.
Richard Hall BSc MBCS CNSP

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