I want to change the ssh port from 22 to 2800. I tried to change the /etc/ssh/ssh_config and removed the # from Port line and changed the number to 2800. after trigger the command: service ssh restart The connection continued. When I tried to connect from the port 2800, It refused. The Content of /etc/ssh/ssh_config is: Removed commented lines

Host *
Port 2800 SendEnv LANG LC_* HashKnownHosts yes GSSAPIAuthentication yes GSSAPIDelegateCredentials no

The command service ssh status gives the following output:

● ssh.service - OpenBSD Secure Shell server Loaded: loaded (/lib/systemd/system/ssh.service; enabled; vendor preset: enabled) Active: active (running) since Fri 2017-09-22 20:31:45 IRST; 1s ago Main PID: 1825 (sshd) Tasks: 1 Memory: 724.0K CPU: 5ms CGroup: / └─1825 /usr/sbin/sshd -D
Sep 22 20:31:45 GoodMind systemd[1]: Starting OpenBSD Secure Shell server...
Sep 22 20:31:45 GoodMind sshd[1825]: Server listening on 0.0.0.0 port 22.
Sep 22 20:31:45 GoodMind sshd[1825]: Server listening on :: port 22.
Sep 22 20:31:45 GoodMind systemd[1]: Started OpenBSD Secure Shell server.

I tried other ports too. But still it has the same status. What do I do wrong?

1

2 Answers

Change the port not in the file:

/etc/ssh/ssh_config but in
/etc/ssh/sshd_config (file with d letter, meaning "daemon")

Just edit this change and change uncomment and update the line

#Port 22

Don't forget to restart your service as you done it with

service ssh restart

3

Your settings are correct but you changed them in the wrong config file. It should be /etc/ssh/sshd_config and you might want to restart the SSH service and open the new port your SSH Server is listening on.

To do this, run the following commands:

1. sudo service ssh restart or sudo systemctl restart sshd.service
2. Open the port on your firewall sudo iptables -I INPUT -p tcp --dport 2800 -j ACCEPT.

This should be all you need to accept connections on port 2800. You can also check what ports your machine is listening on with netstat -lt4 and you should see a line similar to

tcp 0 0 *:2800 *:* LISTEN

Let me know if it works for you!

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