Twenty free and effective infosec tools

We asked readers to name the free tools they find most useful in their daily work as infosec practitioners. Here are 20 that stand out.

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Wireshark is a network protocol analyzer that lets users capture and interactively browse traffic running on a computer network.

The long list of features include:

-- Deep inspection of hundreds of protocols, with more being added all the time

-- Live capture and offline analysis

-- Standard three-pane packet browser

-- Multi-platform: Runs on Windows, Linux, OS X, Solaris, FreeBSD, NetBSD, and many others

--Captured network data can be browsed via a GUI, or via the TTY-mode TShark utility

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