[vox-tech] Firewall/NAT not working too well, Suguestions?

[Ryan]

I'm currently connecting to the internet via a box running Mandrake Singl=
e=20
Network Firewall and I want to try something else.

I was thinking of installing Debian and putting together my own=20
NAT/Firewall/DNS box, but I'm not sure how to go about it.

Here's what I need:

1) NAT
2) Port Forwarding
3) FLEXABLE Firewall
4) Easy addition/deletion of port forwarding/firewall rules
5) DNS

I currently don't know netfilter, ipchains or iptables (is iptables =3D=3D=
=20
neftilter?)

I would prefer to install a firewall distro.

Some links to good howtos, general hints, experiances with firewall distr=
os,=20
etc would be very helpful.