In this talk, penetration/reverse engineering techniques of both hardware and software will be demonstrated by breaking into a portable "secure" Linux-based firewall device's firmware, which will then be recreated and improved with a Linux single board computer. The original device provides anti-virus, anti-spam, anti-spyware, intrusion detection and prevention, VPN client and website filtering, and parental control - and it all runs on a computer the size of a pack of gum. Dernyn will provide a step-by-step tutorial on how to gain full access to the inner workings of this discrete dedicated Linux-based ARM mini-computer firewall appliance. There will be a full analysis of its inner workings, with a dissection of the electronics and implemented system and software infrastructure, networking/firewall policies, and an overall security level analysis focusing on the lack of protection/security which the manufacturer claimed as Pentagon level protection.