General Knoppix support for those who've read the FAQ at the Wiki
Cisco FPR1010-NGFW-K9 FirePOWER Security Appliance **CISCO EXCESS**
$339.00
Fortinet Fortiwifi 60D FG-60D Security Appliance Firewall / VPN w/ AC Adapter
$34.97
SonicWALL TZ300 Network Security Appl FirewallRouter5pt 01-SSC-0215TransferReady
$45.00
Palo Alto PA-220 Next-Gen Firewall 750-000128-00A w/ Power adapter
$68.00
Sophos SG 210 Rev. 2 8-Port Gigabit Ethernet Rackmount Network Firewall
$109.95
Protectli The Vault 4-Port Firewall Network Appliance FW108120 51524F17
$149.95
Fortinet FortiGate 100D Next Generation Firewall (FG-100D)
$59.99
NETGATE SG-5100 PFSENSE PLUS FIREWALL/ROUTER/VPN SECURITY GATEWAY APPLIANCE
$249.99
Fortinet FortiGate 60F FG-60F Network Security Firewall Appliance
$199.99
Fortinet Fortigate Fg-1000C 1000c Security Appliance FIREWALL Hub - Tested
$89.99