당신이 사용할 수있는
netstat -pnlt | grep ':portno'
다른 옵션은 서버에서 열린 포트를 확인하기 위해 nmap 도구를 사용할 수 있습니다
nmap -sT -O localhost
산출
Starting nmap 3.55 ( http://www.insecure.org/nmap/ ) at 2004-09-24 13:49 EDT
Interesting ports on localhost.localdomain (127.0.0.1):
(The 1653 ports scanned but not shown below are in state: closed)
PORT STATE SERVICE
22/tcp open ssh
25/tcp open smtp
111/tcp open rpcbind
Device type: general purpose
Netstat 예 :
[root@krizna ~]# netstat -pnlt | grep ':80'
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 :::80 :::* LISTEN 1164/httpd