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Servers linux critical

SSH Security

SSH security best practices covering key management, daemon hardening, authentication methods, and access control for production servers.

Difficulty
intermediate
Read time
1 min read
Version
v1.0.0
Confidence
established
Last updated

Quick Reference

SSH Security: Ed25519 keys preferred. Disable password auth. Disable root login. Use AllowUsers/AllowGroups. Change default port. Fail2Ban for brute force. 2FA with Google Authenticator. SSH certificates for scale. Bastion/jump hosts for private networks. Rotate keys every 1-2 years.

Use When

  • Server administration
  • Remote access security
  • Production infrastructure
  • SSH hardening

Skip When

  • Non-SSH environments
  • Local-only systems

SSH Security

SSH security best practices covering key management, daemon hardening, authentication methods, and access control for production servers.

Tags

ssh security linux servers authentication

Discussion