security softwares

[rapha.ottoni () gmail com]

hi,

First I would like to thank all the support that you guys gave me on my last post.

this msg is still about my server that i want to protect even more, now im looking for softwares that help me ( on 
linux ) to monitor this host, like sniffers,snort , etc...

and i would like to know ur opinion about the fwknop SPA port knocking software.

thanks once again,

Raphael Ottoni Santiago Machado de Faria