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Fwknop Port Knocking Utility 2.0.3

Fwknop Port Knocking Utility 2.0.3
Posted Sep 8, 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: Several DoS/code execution vulnerabilities for malicious fwknop clients that manage to get past the authentication stage (so such clients must possess a valid encryption key) have been fixed. Permissions and ownership checks have been added to all files consumed by the fwknop client and server. RPM builds have been fixed by including the $(DESTDIR) prefix for uninstall-local and install-exec-hook stages in Makefile.am.
tags | tool, scanner, vulnerability
systems | unix
SHA-256 | f7f306a66c641020e7c7a820eaa3743e2700ddee6e26cca37440db95df56b986
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