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?
NetFu Firewall 1U, Intel CPU, 8 x Gigabit, SFP, w/ pfSense, Others, NEW OPTIONS
$553.95
NEW NetFu Firewall Mini, Intel CPU, 6 Port Gigabit, w/ pfSense, others
$336.00
Cisco ASA5525-FTD-K9 Security Appliance with FirePower Services
$1000.00
Fortinet Fortigate FG-61E | Firewall Network Security Appliance
$49.99
CISCO MERAKI MX64 SECURITY APPLIANCE FIREWALL W/O POWER SUPPLY UNCLAIMED
$39.99
Fortinet FortiGate FG-40F Network Security Firewall
$100.00
OPNsense six-port Gigabit router/firewall on Lanner FW-7535 hardware
$69.00
Fortinet Fortiwifi 60D FWF-60D Security Appliance Firewall Wifi VPN
$29.99
Fortinet Fortiwifi 60D FG-60D Security Appliance Firewall / VPN w/ AC Adapter
$999.97
Fortinet FortiGate 60E & FortiAP 221E+ Network Security Firewall
$260.00