Is there a Nagios plugin that uses Nmap and does port checking?
This guy has developed a nagios script for linux that does exactly what you are asking:
http://www.altsec.info/check_scan.html
I'm trying now to find a Windows equivalent
Miguel
What do you mean to check ports on hosts remotely? Do you just want to connect to the port to see if it is open? The check_tcp plugin will do that, if, that's what you want to do.
Not quite sure what you mean.