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Ngrep : Convenient packet matching & display ngrep strives to provide most of GNU grep’s common features, applying them to the network layer. ngrep is a pcap-aware tool that will allow you to specify extended regular or hexadecimal expressions to…
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Tripwire
Tripwire : The grand-daddy of file integrity checkers A file and directory integrity checker. Tripwire is a tool that aids system administrators and users in monitoring a designated set of files for any changes. Used with system files on a…
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Ntop
Ntop : A network traffic usage monitor Ntop shows network usage in a way similar to what top does for processes. In interactive mode, it displays the network status on the user’s terminal. In Web mode, it acts as a…
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WebScarab
WebScarab : A framework for analyzing applications that communicate using the HTTP and HTTPS protocols In its simplest form, WebScarab records the conversations (requests and responses) that it observes, and allows the operator to review them in various ways. WebScarab…
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Google
Google : Everyone’s Favorite Search Engine While it is far more than a security tool, Google’s massive database is a good mind for security researchers and penetration testers. You can use it to dig up information about a target company…
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P0f
P0f : A versatile passive OS fingerprinting tool P0f is able to identify the operating system of a target host simply by examining captured packets even when the device in question is behind an overzealous packet firewall. P0f does not…
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BackTrack
BackTrack : An Innovative Penetration Testing live Linux distribution This excellent bootable live-CD Linux distribution comes from the merger of Whax and Auditor. It boasts a huge variety of Security and Forensics tools and provides a rich development environment. User…