how to do a ssh reconnection to a new server inside my linux network

To reconnect to a new server using SSH within your Linux network, follow these steps: ### 1. Identify the New Server's IP Address First, ensure you know the IP address or hostname of the new server you want to connect to. This can usually be found through your network's DHCP settings or by accessing the server directly. ### 2. Open a Terminal On your local machine, open a terminal. You can do this by searching for "Terminal" in your desktop environment or using the keyboard shortcut (often `Ctrl + Alt + T`). ### 3. Test Connectivity (Optional) Before attempting to SSH, you might want to check the connectivity to the server: ```bash ping <server-ip-or-hostname> ``` Replace `<server-ip-or-hostname>` with the actual IP address or hostname of your server. If you get responses, the server is reachable. ### 4. SSH into the Server To connect via SSH, use the following command: ```bash ssh username@<server-ip-or-hostname> ``` - Replace `username` with your actual username on the new server. - Replace `<server-ip-or-hostname>` with the server’s IP address or hostname. For example: ```bash ssh This email address is being protected from spambots. You need JavaScript enabled to view it. ``` ### 5. Accept the Host Key The first time you connect to a new server, you may be prompted to accept the server's RSA key fingerprint. Type `yes` to continue. ### 6. Enter Your Password You will be prompted to enter the password for the username you specified. Type your password (it won’t be displayed on the screen for security reasons) and press Enter. ### 7. Troubleshooting (If Needed) If you encounter any issues when attempting to connect, consider the following: - **Check SSH Service**: Ensure that the SSH server is running on the new server. You can do this by logging into the server directly (if possible) and running: ```bash sudo systemctl status ssh ``` - **Firewall Rules**: Ensure that the firewall on both your local machine and server allows SSH traffic (usually on port 22). - **Configuration Changes**: If the new server has different SSHD configurations, make sure that the SSH daemon is set up to accept connections. ### 8. Use SSH Keys (Optional) For a more secure setup, consider using SSH keys instead of passwords. You can generate SSH keys using the `ssh-keygen` command and then copy the public key to the new server using the `ssh-copy-id` command: 1. Generate SSH Key (if you don’t have one): ```bash ssh-keygen ``` Just press Enter to use the default settings. 2. Copy the Public Key to the Server: ```bash ssh-copy-id username@<server-ip-or-hostname> ``` ### 9. Connect again Now, you should be able to SSH into the server without a password: ```bash ssh username@<server-ip-or-hostname> ``` You should now be successfully connected to your new server via SSH!