Baza znanja

Podrška

How to Set Up SSH Key-Based Authentication

SSH keys are far more secure than passwords. This guide sets up key-based login and disables password authentication.

1. Generate a key pair (on your local machine)

ssh-keygen -t ed25519 -C "you@example.com"

Press Enter to accept the default location and optionally set a passphrase.

2. Copy the public key to your server

ssh-copy-id deploy@your-server-ip

Or manually append your public key to ~/.ssh/authorized_keys on the server.

3. Test the key login

ssh deploy@your-server-ip

You should log in without a password prompt.

4. Disable password authentication

Once key login works, edit /etc/ssh/sshd_config:

PasswordAuthentication no
PermitRootLogin no
sudo systemctl restart ssh

Keep your private key safe and never share it. Combine with UFW and Fail2ban for strong protection.

Je li Vam ovaj odgovor pomogao?

0 Korisnici koji smatraju članak korisnim

Vezani članci

Essential Server Security Hardening for Ubuntu

A few basic steps dramatically reduce your server’s attack surface. Apply these right after...

Powered by WHMCompleteSolution