Usually we’re using tools like Network Monitor, various text file parser, Procmon, Windbg… to solve ISA/TMG cases every day in and out in Microsoft Customer Service & Support. Sometimes we also use Excel to be able to filter the exported Firewall or Web Proxy Logs our customers send to us, e.g. only display traffic for a specific Client IP or for a specific rule.

Some time ago I realized that there’s another quite powerful feature of Excel, which I didn’t connect with analyzing network traffic before, but more with things like management analysis or accountancy: Excel Pivot Tables!

In this blog I want to describe how Pivot tables can be quite handy for analyzing TMG Logs if you want to identify specific patterns or things like netstat if you want to get an overview about who’s talking with your server.
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