port knocking

[Felipe Figueiredo]

Em Thursday 27 December 2007 20:14:42 Noah escreveu:
> Hi there,
> 
> doorman is core dumping and not working properly.  could somebody please 
> recommend a good port knocker?
> 

I use fwlogwatch to block IPs based on access to non-permitted ports. 

Since it lets you use your own script upon activation, you can do pretty much 
anything with it (including opening ports). It should be simple enough to 
start from the default blocking rules to add an opening rule.

regards
FF