How to change the ssh port on Ubuntu 23.04?
root@ubuntu:/home/user# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 23.04
Release: 23.04
Codename: lunar
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Please [edit] your question and explain what you want to achieve. If you want/need to use a different port number at your public IP address, you could configure this in the port forwarding of your router. – Bodo Jul 25 '23 at 03:41
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4Does this answer your question? [SSH default port not changing (Ubuntu 22.10)](https://askubuntu.com/questions/1439461/ssh-default-port-not-changing-ubuntu-22-10) – muru Jul 25 '23 at 03:56
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In Ubuntu 22 and mostly in Ubuntu 23 if we change ssh port in sshd_config it doesn't work so I figured it out following method
sudo vim /lib/systemd/system/ssh.socket
Change the following parameter to the port of your choice e.g. 1122
ListenStream=1122
Save the file and quit the vim editor with the command wq! and then execute the following commands one by one
This will reload the daemon
sudo systemctl daemon-reload
To restart the SSH server
sudo systemctl restart ssh
and if you want to check the port you can check with the following command netstat -ant |grep 6381
in case you you face the error Command 'netstat' not found
you can be installed with: apt install net-tools -y
muru
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Muhammad Irfan Aslam
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Any edits to `/lib/systemd/system/ssh.socket` will be lost when the package is updated. Use override files to change settings instead. – muru Jul 27 '23 at 15:41
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which files i tried updating in `/etc/ssh/sshd_config` but didn't worked – Muhammad Irfan Aslam Jul 27 '23 at 15:43
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See the duplicate: https://askubuntu.com/questions/1439461/ssh-default-port-not-changing-ubuntu-22-10 – muru Jul 27 '23 at 15:44