Re: preventing OS fingerprint

[Hans van Leeuwen]

Gustavo Rios wrote:

Dear gentleman,
i have an obsd firewall and would like to prevent external entities
discovering that firewall is openbsd, is that possible?

Thanks a lot for your time and cooperation.
 

I use the following line in pf to prevent nmap scan, including -O:

block in quick log on $inet_if from any os NMAP

But why would you want to hide the fact you run the most secure OS in 
the world?


Hans