Hello all.
I'm interested in installing a software firewall on my Debian 3.0r1 server. Any recommendations for applications which could do the job well? Also, because others will be logging in via VNC (family who is only poco computer-literate but wants to control firewall [I don't know why

]; a GUI would be appreciated for that reason) or Webmin, does it have a Webmin module (in apt-get)?