Which protocol enhances network security by providing data encryption and authentication between two devices?

The protocol that enhances network security by providing data encryption and authentication between two devices is Secure Shell (SSH). SSH is a cryptographic network protocol primarily used for securely accessing remote computers and network devices over an unsecured network. It ensures that the data transmitted between the client and the server is encrypted, which protects against eavesdropping, man-in-the-middle attacks, and other forms of unauthorized access.

In addition to encryption, SSH also provides strong authentication mechanisms, allowing users to verify the identity of the remote device they are connecting to. This dual capability of encryption and authentication makes SSH a vital tool for secure communications, especially in environments where data security is paramount.

While other protocols like TLS do provide similar functionalities in securing data in transit, SSH is specifically designed for secure shell access and management of network devices, distinguishing its application in the cybersecurity landscape.