17 Aug
2005
17 Aug
'05
6:31 p.m.
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.
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