How I see port number in Linux System?

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I always forget the port number of FTP or SSH server, is there any command that I can see the port number anytime?

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Answered By 0 points N/A #134022

How I see port number in Linux System?

qa-featured

 

Hi Williams,

You don’t need to remember all the port numbers in Linux. You just need to know about one file that contains all the port numbers in Linux.

# less /etc/services

This file shows you all the port numbers, which is used in the Linux system

The most important ports are listed below..
NAME                 UDP             TCP
FTP                        20               21
TELNET                 23               23
SMTP                     25               25
http                         80               80
POP3                    110             110
IMAP                     143            143
IMAP3                   220            220
HTTPS                  443            443
SMTPS                 465            465
DHCP client         546             546
DHCP server        547             547
POP3S                 995             995
NFS                    2049           4049
PROXY               8081           8081

Britnu Salu

 

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