Topic: Any implementations of portknocking?

[Hans222222]

Seems like an obvious way to secure access to your servers: http://www.portknocking.org/

[stancol]

From http://www.portknocking.org/ web site.

Port knocking is a suitable form of hardening hosts that house users who require continual access to services and data from any location and that are not running public services, such as SMTP   or HTTP   .

Would be nice except for those of us needing to run SMTP and HTTP.

[Kevinm]

Here is another I am going to try

http://www.zeroflux.org/knock/

Kevin