Definition
Telnet, also known as a teletype network, is a network protocol for accessing a command-line interface on a remote device via a network connection. It was developed in the 1960s and enables administrators to control routers, servers, switches, and other network components.
Unfortunately, Telnet has various security weaknesses, primarily since it shares data, such as passwords and usernames, in plain text. Nowadays, options like Secure Shell (SSH) are better for remote access.
Examples of Telnet
- Accessing a remote server: Network administrators can use Telnet to control a remote server, like monitoring performance or altering configurations.
- Connecting to a switch or router: Network specialists can use Telnet to set up devices on a network or troubleshoot network problems.
Difference Between Telnet to SSH
SSH is a more secure option than Telnet since it uses encryption to safeguard data transmission. Unlike Telnet, SSH protects all data, including passwords and usernames, ensuring unauthorized individuals can’t read or intercept them. These security advantages make SSH more widely used than Telnet for remote access.
Telnet Pros and Cons
Pros
- Easy and simple to apply
- Supports numerous sessions and users
Cons
- Does not have encryption, making it vulnerable to man-in-the-middle assaults and eavesdropping
- Obsolete compared to modern secure options such as SSH
Tips for Utilizing Telnet Safely
- Encrypt your network connection with a VPN when using Telnet.
- Avoid sharing sensitive data, including login credentials or personal information using Telnet.
- Use more secure options such as SSH.
