I've worked over
http://knoppix.net/wiki/Category:Har...Server_install
The old version has been a little complicated.
Cisco ASA5525-FTD-K9 Security Appliance with FirePower Services
$1000.00
NetGate SG-2440 with pfSense Plus Console GNU Router Firewall Security Appliance
$69.99
Dell SonicWall TZ400 Firewall Appliance
$39.99
Ubiquiti Networks USG Unifi Security Gateway Router/Firewall
$29.95
Fortinet Fortiwifi 60D FG-60D Security Appliance Firewall / VPN w/ AC Adapter
$34.97
Ubiquiti Networks UniFi Security Gateway - White (USG-3P)
$49.00
OPNsense six-port Gigabit router/firewall on Lanner FW-7535 hardware
$69.00
Fortinet Fortigate-60E Network Security Firewall FG-60E White
$79.99
Fortinet Fortigate 500D FG-500D 8x 1GbE RJ45 + 8x 1GbE SFP Firewall Appliance
$99.99
Cisco ASA5505-SEC-BUN-K9 Firewall Security+ 25 VPN Peers 512MB ASA9.24 /W Power
$39.99