I've been given an assignment by my teacher, saying:
"Edit the portsentry.conf. Protect a few ports from visibility outside local net".
I've gone through the documentation in the config file, and while I can find a lot of different ways that portsentry can respond to a scan, none of them seem to tell me how to make specific ports hidden.
At least, nothing happens when I try to scan with nmap after playing around with the different options.
Does anyone know a simple way to do this?