I have been studying up on OS fingerprinting and I have hit a part where I scratch my head, and need some outside advice. From all of the stuff I have read it says that most *nix based OS's will return a TTL value of 255 in an ICMP echo reply. This is fine but for one thing, I am running slack 9.1 and it returns 64. Which Kernel did they change it back to 64? Or did theynot and I am an idiot. I am just wondering. Thanks for the help.