If you want a compact and silent firewall then this is for you

With 3 NICs it makes a great firewall, providing RED, GREEN and ORANGE (DMZ) interfaces.

Features:

• This is the updated version which includes IPCop Version 1.4 (Linux 2.4 kernel and iptables)
• Dimensions: 170x50x225mm
• VIA C7 EDEN 500 MHz fanless CPU
• 1GB RAM
• 512MB Compact Flash
  
• 3 10/100 network interfaces
• 2 rear USB ports
• 1 front USB port
• Mouse, Keyboard, VGA,2 Serial, Parallel sockets
• Onboard power supply
• External 12v power brick
• IP-Cop - web controlled firewall, ipchains, IPSEC VPN

IP-Cop is an easy to use firewall system controlled using a web interface - for more info see www.ipcop.org