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rothkj1022/Change SSH Port on CentOS 7.md

Last active April 10, 2019 17:28
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Change SSH Port on CentOS 7.md

Change SSH Port on CentOS 7

Back up sshd_config

$ sudo cp /etc/ssh/sshd_config /etc/ssh/sshd_config.bak

Edit config to change port and disallow password auth

$ sudo nano /etc/ssh/sshd_config

Find the following line:

# Port 22

and change to something like:

Port 2244

Find the folling line:

#PermitRootLogin yes

and change to:

PermitRootLogin no

Exit and save.

Reload sshd and DO NOT EXIT YOUR SESSION

$ systemctl reload sshd

Open a new terminal window. In the new window, we need to begin a new connection to our server, using the new port number

# ssh [email protected] -p 2244

If you are able to connect, you may close your original terminal session. If not, recheck your sshd_config.

If you don't want to type in your port number in the future for connections to this server, you may modify your .ssh/config file to add something like the following:

Host yourserver.domain.com
  Port 2244
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