리눅스 오픈 포트 보는 명령어

nmap -sT localhost

Starting nmap 3.70 ( http://www.insecure.org/nmap/ ) at 2009-09-10 10:47 KST
Interesting ports on domain (127.0.0.1):
(The 1650 ports scanned but not shown below are in state: closed)
PORT    STATE    SERVICE
21/tcp  open    ftp
22/tcp  open    ssh
23/tcp  open    telnet
53/tcp  open    domain
80/tcp  open    http
110/tcp  open    pop3
443/tcp  open    https
953/tcp  open    rndc
3306/tcp open    mysql
5050/tcp filtered mmcc