# Telnet/ SSH credentials

Some devices like Linux and Solaris servers require Telnet / SSH authentication for login, monitoring and management. Telnet / SSH credentials are used for establish a commandline mode of connection to monitor Linux and Solaris servers.

## How to add Telnet/SSH credential to OpManager

To add Telnet credential, follow the below steps:

- Go to **Settings -> Discovery -> Credentials**.
- Click on **Add Credentail**.
- Select **Telnet/SSH**.
- Provide a name for your Telnet credential.
- Select the protocol as Telnet and provide the username and password.  
  ![Adding username and password](https://www.manageengine.com/network-monitoring/kb/images/telnet0.JPG)
- The default port used for Telnet is 23. You can change it if required. However, ensure that the port being specified is not blocked by your firewall.
- Ensure you configure the correct login prompt, command prompt, and password prompt besides the user name, password, port number and timeout (in seconds) to access the device.
- Click on **Save**.

To add SSH credential, follow the below steps:

- Go to **Settings -> Discovery -> Credentials**.
- Click on **Add Credential**.
- Select **Telnet/SSH**.  
  ![Adding telnet credentials](https://www.manageengine.com/network-monitoring/kb/images/telnet.JPG)
- Provide a name for your SSH credential.
- Select the protocol as SSH.  
  ![Adding Protocols](https://www.manageengine.com/network-monitoring/kb/images/telnet1.JPG)
- If you have a SSH key, click on **SSH Key Authentication** checkbox.
- Provide the username and upload the SSH key using **Browse** button.  
  ![Uploading SSH key](https://www.manageengine.com/network-monitoring/kb/images/telnet2.JPG)
- If you do not have a SSH key, uncheck the **SSH Key Authentication** checkbox.
- Configure the user name and password.
- The default port used for Telnet is 22. You can change it if required. However, ensure that the port being specified is not blocked by your firewall.
- The default timeout duration is 10 seconds. Though this is the recommended value, you can change it if required.
- Ensure you configure the correct login prompt, command prompt, and password prompt besides the user name, password, port number and timeout (in seconds) to access the device.
- Click on **Save**.