Hello list. I have new server on CentOS 4.1 - fresh installation. During security tests I've noticed: When I scan server ports (nmap) from the outside there is 21 tcp port open. But when I check on the server (netstat -tan or lsof -i) there is no any open 21 tcp port. Any ideas? To be honest I'm confused. Regards P.S.: of course I don't have started FTP service. Even I don't have installed FTP server. -- ____________________________________________________________________ D o m i n i k S k ł a d a n o w s k i