Network intrusion detection
is our favorite window into seeing unwelcome activity on our network, whether it be port scans, stealth attacks, buffer overflows, or a variety of other mean-spirited hijinks. A new beta, , introduces a shell-based user interface, native IPv6, MPLS and GRE support, and a multithreaded execution module to enhance the Snort product line. Add , and you have a Web-based front end to query and analyze Snort alerts as well as a role-based user authentication system to control user access to Snort data.

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