Enable SSH putty access for ubuntu

To enable SSH access to an Ubuntu machine using PuTTY, follow these steps:

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Step 1: Install SSH Server on Ubuntu

1. Open Terminal on your Ubuntu machine.
2. Run the following commands to update the package list and install the SSH server:

   sudo apt update
   sudo apt install openssh-server -y
   

3. Check the SSH service status to ensure it’s running:

   sudo systemctl status ssh
   

   • If it’s not running, start and enable it:

     sudo systemctl start ssh
     sudo systemctl enable ssh
     

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Step 2: Get the Ubuntu Machine’s IP Address

1. Use the following command to find the IP address of your Ubuntu machine:

   ip a
   

   Look for the IP address associated with your network interface (e.g., eth0 or wlan0).

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Step 3: Configure Firewall (if applicable)

1. If you are using ufw (Uncomplicated Firewall), allow SSH through the firewall:

   sudo ufw allow ssh
   sudo ufw enable
   

   Verify the rules:

   sudo ufw status
   

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Step 4: Download and Configure PuTTY

1. Download PuTTY from the official website.
2. Open PuTTY and configure the session:
   • Host Name (or IP Address): Enter the Ubuntu machine’s IP address.
   • Port: Ensure it is 22 (default SSH port).
   • Connection Type: Select SSH.
3. Save the session configuration for future use.

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Step 5: Connect to Ubuntu Using PuTTY

1. Click Open in PuTTY.
2. A terminal window will open. If prompted with a security alert about the server’s host key, click Yes.
3. Log in using your Ubuntu username and password.

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Optional: Configure SSH for Enhanced Security

1. Edit the SSH configuration file:

   sudo nano /etc/ssh/sshd_config
   

2. To improve security:
   • Disable root login: Change PermitRootLogin yes to PermitRootLogin no.
   • Allow specific users: Add AllowUsers yourusername.
   • Change the default SSH port: Modify Port 22 to a custom port, e.g., Port 2222.
3. Restart the SSH service:

   sudo systemctl restart ssh
   

Now you should be able to access your Ubuntu machine securely using PuTTY!

If still you’re not able to do so, connect with us at [email protected]