[Sussex] Firewall appliance recomendations

[Diego Moore]

Hi all,

Anyone know of any Linux firewall appliances? I know I could build an
ITX system but I really would like to buy a decent appliance (3-4
Nics) which comes with hardware and maybe even software support.

I like the Astaro range, but for what I need it's a bit pricey. The
reason behind wanting it to be Linux is that normally you can easily
add modules (Antivirus, IDS, etc).

PS: Ideally rack-mounted too...

Greatly appreciated,
Diego