nmap os detection!

[tburns () despammed com]

> i want to know if there is a way of 
> making the OS undetectable. it will 
> be of great help if anyone could 
> point out how do it?. i am using 
> both windows and linux.

There are some suggestions in "Hacking Linux Exposed". One is put a dedicated firewall or linksys router between your 
machine & the net, then nmap sees the firewall but not your actual system. IPLog includes functionality intended to 
fool nmap and xprobe & can be found at < http://ojnk.sourceforge.net >. IPPersonality will "enable your machine to 
impersonate any " OS, found at < http://ippersonality.sourceforge.net >. The authors offer a caution that such measures 
may impact your performance or compatibility. These solutions will work for Linux  but probably not windows.