Which protocol allows for encrypted communication with a remote device?

SSH (Secure Shell) is the protocol that enables encrypted communication with a remote device. It is designed to provide a secure channel over an unsecured network by using encryption techniques. This means that any data transmitted between the client and the server is protected from eavesdropping and tampering, which is crucial for maintaining the confidentiality and integrity of sensitive information.

SSH operates at a higher level and establishes a secure connection that ensures not only the encryption of the data being transferred but also authentication methods to verify the identity of the devices involved. This is particularly valuable for remote administration and secure file transfer, making SSH a widely accepted standard in network management and security practices.

In contrast, other listed protocols do not provide encryption. For example, Telnet transmits data in plaintext, making it vulnerable to interception by malicious actors. HTTP, while commonly used for web traffic, does not secure the data being transferred. SNMP, primarily used for network management, also lacks any inherent encryption by default. This distinction underscores SSH's importance as a secure method for remote communication.