ICSI Netalyzr — Results. Direct TCP access to remote FTP servers (port 21) is allowed.
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Safe Hex - safe computing tips to defend against viruses, worms, trojans, and other malware. Please note that this document is quite dated (last updated in 2008).
Some of the infomation is still of interest so I'm keeping the document up for posterity only. Some of the old links have been removed. Safe Hex - A collection of suggestions intended to help you defend against viruses, worms, trojans (oh my!) , malware and other questionable code. Berkeley Computer Science Lecture. Since 2008, Academic Earth has worked diligently to compile an ever-growing collection of online college courses, made available free of charge, from some of the most respected universities.
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10 Cool Nmap Tricks and Techniques « UrFix's Blog. Nmap (“Network Mapper”) is a free and open source (license) utility for network exploration or security auditing.
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