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Firewalk 0.99.1
Firewalk is a technique developed by MDS and DHG that employs traceroute-like techniques to analyze IP packet responses to determine gateway ACL filters and map networks.

Firewalk, the tool, employs the technique to determine in-place filter rules on packet forwarding devices.
The newest version of the tool, firewalk/GTK, introduces the option of using a graphical interface and a few bug fixes.
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