What is Telnet?

Telnet is a client-server protocol used on the Internet or LAN and based on reliable connection-oriented transport. Telnet provides a bidirectional interactive text-oriented communication facility using a virtual terminal connection.


  • Universal: Telnet is available for a great number of operating systems. Even older systems can connect to newer machines with different operating system versions. Users can enter usernames and passwords to log in to a remote server and control it by entering commands on console locally.
  • Specific: Telnet allows you to test access from a device on your school network to specific ports on an external server.
  • Network Device configuration: Telnet can be used to connect to networking hardware (switches, routers) for configuration purposes.

Telnet does not encrypt any data sent over the connection (including passwords) by default. For secure transmission, Telnet is often replaced with SSH Protocol.

How to Telnet into an Ursalink router?

To telnet into a router, You can take UR7x (programmable industrial router) or UR3x (cost-effective router) as an example. And also, you may wish to read on another blog about 6 tips to troubleshoot your industrial network.

Step 1: Enable Telnet

“Network”->”Firewall”->”Security”, enable “remote access” function



Step 2: Ping your network

Search “cmd” on your computer to open the “Command Prompt” program. Open “Command Prompt” program and input “ping”. If you get a response, then it means the website works fine.



Step 3: Input “telnet IP address”. For example, “telnet”.


Step 4: Input username and password



Step 5: Login successfully