Raspberry pi ssh stopped working

1. Why is Raspberry Pi SSH not working?
2. Why would SSH stop working?
3. How to enable SSH on Raspberry Pi?
4. How to enable SSH on Raspberry Pi command line?
5. How do I fix SSH not recognized?
6. How do I check my Raspberry Pi SSH service?
7. How do I fix SSH permission denied?
8. What is causing SSH permission denied?
9. Why SSH Cannot connect to PuTTY?
10. How do I know if my Raspberry Pi is SSH enabled?

Why is Raspberry Pi SSH not working?

If you can't establish an SSH connection to your Raspberry Pi, here are a couple of things you can do: Make sure that you have enabled SSH on your Raspberry Pi. Make sure that you're using the correct IP address. Make sure that you have the correct credentials.

Why would SSH stop working?

One of the common causes of SSH connectivity is firewall blocking and firewall applications differ between various OS being used in the server. With CentOS7, it is firewalld , whereas, with Ubuntu, it is ufw . If these are not present in the server, probably it is using iptables .

How to enable SSH on Raspberry Pi?

To enable SSH through the Raspberry Pi Configuration menu, you'll need your Raspberry Pi (running Raspberry Pi OS) connected to a display. Click on “Preferences > Raspberry Pi Configuration” from the home menu. Next, click on “Interfaces”, and select “Enabled” next to SSH.

How to enable SSH on Raspberry Pi command line?

To enable SSH via the terminal, open a terminal window and enter sudo raspi-config . Now with the arrows select Interfacing Options , navigate to and select SSH , choose Yes , and select Ok .

How do I fix SSH not recognized?

If it returns: 'ssh' is not recognized as an internal or external command, operable program or batch file. Then it may need to be installed (see if the folder "C:\Windows\System32\OpenSSH" exists and has files such as "ssh.exe" in it).

How do I check my Raspberry Pi SSH service?

Verify SSH is enabled on your Raspberry Pi by navigating to the 'raspberry' icon in the menu and select Preferences , Raspberry Pi Configuration . In the Interfaces tab, select Enable for SSH .

How do I fix SSH permission denied?

If you want to use a password to access the SSH server, a solution for fixing the Permission denied error is to enable password login in the sshd_config file. In the file, find the PasswordAuthentication line and make sure it ends with yes . Find the ChallengeResponseAuthentication option and disable it by adding no .

What is causing SSH permission denied?

GitHub's Permission denied (publickey) error is usually caused by one of the following three issues: You have used an incorrect email address in the GitHub SSH URL. You have not configured your public SSH key in your GitHub account. You must create GitHub SSH keys to be used by the secure shell.

Why SSH Cannot connect to PuTTY?

It's possible that although Apache is up and running, your SSH port (which is what PuTTY is looking to access) is not available. You'll want to ensure that port 22, or your preferred SSH port if you're not using the standard port, is open in your firewall and that the SSH service is running.

How do I know if my Raspberry Pi is SSH enabled?

Select “Interfacing Options” and press ENTER. Then, select “SSH” and press ENTER. Select “Yes”, press ENTER, and you'll get a message “The SSH server is enabled”. Then, you'll see the raspi-config menu again, press ESCAPE to quit.