General Knoppix support for those who've read the FAQ at the Wiki
Sophos SG 230 Firewall Security Appliance Ubuntu Server 22.04 LTS 🧡
$155.00
1U BareMetal pfsense opnsense Router Firewall DNS Server 6x 10GB Ethernet Ports
$149.00
SONICWALL TZ270 Network Firewall With Power Cable *READY TO REGISTER*
$150.00
OPNsense six-port Gigabit router / firewall on Palo Alto ION 2000 hardware
$69.00
Palo Alto PA-220 Next-Gen Firewall 750-000128-00A w/ Power adapter
$59.99
Palo Alto PA-220 Next-Gen Firewall 750-000128-00A w/ Power adapter
$50.00
Fortinet FortiGate 50E Network Router/Firewall UTM
$49.00
Dell Fanless 2 Port Gigabit PFsense Firewall Intel Atom Quad Core E3825 AES-NI
$99.95
Firewall pfSense 2.7.2 Release 8GB Memory - Dual NIC 1 GB - 256GB SSD
$103.77
Dell Sonicwall NSA 2650 16-Port Ethernet 4xSFP Gigabyte Firewall UNCLAIMED
$129.99