Which protocol is commonly used to provide encryption in transit for remote access, aside from TLS?

• A. IPSec
• B. SSH
• C. SSL
• D. PGP

Answer: (B)

Securing remote access hinges on an encrypted channel that protects the session from eavesdropping, tampering, and impersonation. SSH provides exactly that for remote administration. It creates a secure tunnel between your computer and the server, so login, commands, and file transfers are encrypted in transit. SSH relies on strong authentication, typically using public-key cryptography, which lets you verify the server and prove your identity without sending passwords in the clear (often you use a private key on the client and a public key on the server). While other protocols exist for protecting communications—IPSec for VPN-style tunneling, SSL/TLS for web traffic, and PGP for email/file encryption—SSH is the go-to choice for interactive remote access because it combines strong encryption, authentication, and convenient features like secure shell access and secure file transfer.