> Although my script seems to be correct namp is finding ports 25/tcp > and 110/tcp open. To start troubleshooting this problem I've > commented everything out and stripped down the ruleset to just the > default DROP policy. Yet nmap -sT -F -P0 -0 xx.xx.xx.xx still > returns 25/tcp and 110/tcp as open! Did you check the PC from another host ? If you do that, the ports will show open even if they are closed. Check from another host and it should show closed or filtered. Gr, Rob