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Fwknop Port Knocking Utility 2.0.4

Fwknop Port Knocking Utility 2.0.4
Posted Dec 11, 2012
Authored by Michael Rash | Site cipherdyne.org

fwknop implements an authorization scheme that requires only a single encrypted packet to communicate various pieces of information, including desired access through a Netfilter policy and/or specific commands to execute on the target system. The main application of this program is to protect services such as SSH with an additional layer of security in order to make the exploitation of vulnerabilities much more difficult. The authorization server works by passively monitoring authorization packets via libpcap.

Changes: On the server side, this release adds a chain_exists() check to SPA rule creation so that if any of the fwknop chains are deleted out from under fwknopd, they will be recreated on the fly. It adds new SPA packet fuzzing capability to the test suite to assist in validation of SPA operations. It adds upstart config for systems running the upstart daemon. An OpenBSD ndbm/gdbm usage bugfix. ICMP type/code client command line arguments have been added for when SPA packets are sent over ICMP.
tags | tool, scanner, vulnerability
systems | unix
SHA-256 | e6a88e969264ff23bd5837a47e5b60b8c4d36fc8a2326c6b377f8447ecf2adea
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