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?
Fortinet FortiGate-40C Network Security Firewall
$37.50
Cisco ASA 5520 Adaptive Security Appliance
$42.56
Cisco ASA5525-K9 ASA 5525-X Security/Firewall Appliance 1 Year Warranty
$138.00
Zyxel ZyWALL USG50 Unified Security Gateway Firewall
$35.00
SonicWall TZ300 Power Supply Wired Firewall Router Network Security Appliance
$14.50
Fortinet Fortiwifi 60D FG-60D Security Appliance Firewall / VPN w/ AC Adapter
$34.97
OPNsense six-port Gigabit router/firewall on Lanner FW-7535 hardware
$69.00
PFSense F80 Firewall | Atom C2358 CPU | 4 Gigabit Ports | 2GB RAM | FANLESS
$75.00
Fortinet Fortigate 30E FG-30E Network Security Firewall Gateway 4 port
$49.99
FORTINET FG-500D FortiGate 500D, 10xGE RJ45 ports, 8xGE SFP slots Firewall
$126.00