Firewalk (computing)

Firewalking is a technique developed by Mike Schiffman and David Goldsmith that employs traceroute-like techniques to analyze IP packet responses to determine gateway ACL filters and map networks. It is an active reconnaissance network security tool that attempts to determine what layer 4 protocols a given IP forwarding device "firewall" will pass.

See also

• Access control list
• Firewall (computing)
• Traceroute

External links

• Firewalk tool, an Open Source tool that determines gateway ACL filters and maps networks by analyzing IP packets responses.
• WooterWoot, an Open Source set of tools that builds Check Point, Cisco ASA, or Netscreen policies from logfiles.
• Use Firewalk in Linux/UNIX to verify ACLs and check firewall rule sets, article on using Firewalk, by Lori Hyde CCNA.
• firewalk(8) - Linux man page