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
$541.85
Palo Alto PA-3020 Network Security Appliance
$75.00
Cisco ASA 5520 Adaptive Security Appliance
$56.75
Fortinet Fortigate FG-61E | Firewall Network Security Appliance
$49.99
OPNsense six-port Gigabit router/firewall on Lanner FW-7535 hardware
$69.00
Palo Alto PA-220 Next-Gen Firewall 520-000309-00J w/ Power adapter
$69.98
Fortinet FortiGate FG-40F Network Security Firewall
$100.00
Fortinet Fortigate 70D Firewall Adapter Network Security Appliance
$52.00
Fortinet Fortiwifi 60D FG-60D Security Appliance Firewall / VPN w/ AC Adapter
$999.97
SONICWALL TZ270 Network Security Base Appliance Only (02-SSC-2821) - Open Box
$291.99