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Current version: 0.81 Last update: Sept. 05, 2005|
Version 0.81 of the doorman is mainly a bug-fix release. Version 0.81 of the knocker unchanged from 0.8, but is given a new number to keep it in sync with the doorman.
The "silent doorman" problem, in which the doorman mysteriously and stubbbornly ignores all knocks, can now be remedied by use of a new "-X" command-line parameter and "link-header-length" configuration parameter. See the "README" file.
This project allows a server to run silently, invisibly, with all TCP
ports closed... except to those who know... the secret knock!
The doorman is intended to run on systems which have their firewall
rules turned down tightly enough as to be effectively invisible
to the outside world. The doorman adds and removes
extra rules in a carefully controlled manner.
The doorman & knocker are here (there is also a pre-compiled Windows knocker.)
Masochistic guinea-pigs may use anonymous cvs to get the bleeding-edge code:
This is 'beta' software, and, of this date, has been tested only
under SuSE Linux 7.1 - 9.3.
keywords = "firewall, security, network security, system security, silent running,
portknocker, port knocker, portknocking, port knocking, doorman, daemon, doorman daemon"
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