Linux

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Linux

Useful Commands

Show what is listening on what port

netstat -tulpn | grep LISTEN

Example output:

tcp        0      0 0.0.0.0:5666            0.0.0.0:*               LISTEN      685/nrpe
tcp        0      0 127.0.0.1:199           0.0.0.0:*               LISTEN      958/snmpd
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      962/sshd
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN      1179/master
tcp6       0      0 :::5666                 :::*                    LISTEN      685/nrpe
tcp6     129      0 :::2224                 :::*                    LISTEN      663/ruby
tcp6       0      0 :::22                   :::*                    LISTEN      962/sshd
tcp6       0      0 ::1:25                  :::*                    LISTEN      1179/master

test1