Have you tried security oriented distro Operator.iso by ussysadmin.org? It is based on knoppix and debian. Also it is one of the best network testing and pen testers tool?
PFSense Firewall - New N5100 chip - 2.5 GbE - 250GB SSD - 8GB RAM - US Seller
$249.95
Fortinet Fortigate-50E FG-50E Network Security Firewall Initialized Power Cable
$56.44
PFSense Firewall - New J4125 chip - 2.5 GbE - 256GB SSD - 8GB RAM - US Seller
$269.95
pfSense Firewall Router (6) 1Gb Intel Ethernet Ports AES-NI CPU 4GB RAM 80GB SSD
$79.95
$75.00
Fortinet Fortigate FG-60D Firewall Security Appliance w/ AC
$49.98
Cisco ASA-5515-X Adaptive Security Appliance Firewall Security
$60.00
Netgate pfSense SG-2220 Router, Firewall, VPN Security Gateway Appliance
$85.00
Fortinet Fortigate FG-60D Firewall Network Security Appliance v5.4.7
$29.00
SonicWall TZ500 Firewall - Lightly Used
$249.00