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.