it used to be that only linux had raw socket support so linux had better tools like port-scanners and sniffers but now with XP out it won't be long before nmap, nessus, etc are ported or XP-specific applications are made. the reason why I like using linux is the power of the command line, the scripting abbilities, and the tools that come with it. once you get the hang of it you can 10xs more productive than in windows.
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