SSH (Secure Shell) and Telnet are both protocols used for remote access to a computer or device. However, there are some key differences between the two:
1. Security: SSH is more secure than Telnet because it encrypts all data sent between the client and server, whereas Telnet does not offer any encryption.
1. Authentication: SSH supports several authentication methods, including password, public key, and two-factor authentication. Telnet only supports username and password authentication.
1. Port: Telnet uses port 23 by default, while SSH uses port 22.
1. User interface: Telnet provides a simple user interface, while SSH offers extended functionality such as file transfer and remote command execution.
In summary, SSH is a more secure and flexible protocol than Telnet, making it the preferred choice for remote access to sensitive systems.