Check If Port Open Cmd Code Example


Example 1: how to check listening ports on a server

$ sudo netstat -plnt Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address               Foreign Address             State       PID/Program name tcp        0      0 0.0.0.0:3306                0.0.0.0:*                   LISTEN      3686/mysqld tcp        0      0 :::443                      :::*                        LISTEN      2218/httpd tcp        0      0 :::80                       :::*                        LISTEN      2218/httpd tcp        0      0 :::22                       :::*                        LISTEN      1051/sshd

Example 2: how to check listening ports on a server

sudo ss -tulwn | grep LISTEN

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