General Knoppix support for those who've read the FAQ at the Wiki
FORTINET FortiGate60F+1YR Forticare UTP Unregistered(FG-60F-BDL-950-12)-Open Box
$254.25
Fortinet FortiGate 60F | 10 Gbps Firewall Network Security EXPIRED (FG-60F)- New
$251.99
Cisco FPR1010-NGFW-K9 FirePOWER Security Appliance **CISCO EXCESS**
$339.00
Firewalla Cyber Security Firewall for Home & Business, Purple SE
$171.69
Palo Alto PA-220 Next-Gen Firewall 750-000128-00A w/ Power adapter
$68.00
Fortinet FortiGate 100D Security Appliance (FG-100D)
$42.97
Palo Alto PA-220 Next-Gen Firewall
$57.19
Dell SonicWALL TZ300 Firewall Appliance Transfer Ready - NO AC
$24.98
Fortinet Fortigate Fg-1000C 1000c Security Appliance FIREWALL Hub - Tested
$89.99
CISCO ASA5505-BUN-K9 SECURITY FIREWALL UPGRADE ASA5505
$44.99