[CLUE-Tech] Small network security distro recommendations?

[David Anselmi]

skipworthy at realivetech.com wrote:
[...]
> I want to build a firewall/router box, that should also  be able to do
> things like logging and intrusion detection,  email alerts and so on, and
> some other white-hat stuff. I'd like it to be lightweight, but be able to
> optionally run a simple xserver/GUI and a fairly complete set of tools.

Debian.