Firewalker -

Firewalking (Network Security Technique):This paper describes a method for determining which protocols a firewall will pass by using traceroute-like IP packet analysis.

Fire Starters (DIY/Household):This includes methods for recycling newspaper or shredded paper into fuel for fireplaces. Firewalker

Are you asking about the "Project Firewalker: Recover Research Data" mission or other assignments from the Mass Effect 2 DLC pack? These involve recovering research data and artifacts using the Hammerhead vehicle. Firewalker