Linux/UNIX: Configure OpenSSH To Listen On an IPv6 Address

To configure OpenSSH to listen on an IPv6 address, you need to modify the sshd_config file. Here’s how to do it:

1. Open the sshd_config file:

2. Find the line that begins with ListenAddress:

If the line exists, you can skip this step. If not, add the following line:

This line tells OpenSSH to listen on all available IPv6 addresses.

3. Save and close the file:

Press Esc key, then type :wq and press Enter to save and exit.

4. Restart the sshd service:

With these steps, you should now have OpenSSH listening on your system’s IPv6 address. You can verify this by running the following command:

You should see a line that shows OpenSSH listening on an IPv6 address. For example: