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What is SSH?

What is SSH?

SSH (secure shell) is a network protocol to provide secure remote access to systems, comes with strong authentication and encrypted data communication.

SSH is short for secure shell and is a network protocol to provide secure remote access to systems. It comes with strong authentication and encrypted data communication. SSH is used on Linux, BSD, and other Unix-based operating systems, with SSH clients available to other operating systems.

SSH details

NameValue
Default port22
Default protocolTCP

More information about SSH

Learn more about SSH: SSH configuration and settings. Topics include:

  • SSH agent
  • SSH client configuration
  • SSH server configuration
  • SSH keys

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This article has been written by our Linux security expert Michael Boelen. With focus on creating high-quality articles and relevant examples, he wants to improve the field of Linux security. No more web full of copy-pasted blog posts.

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