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ssh setup

SSH Authentication

Access remote systems without passwords

Public key on remote server
Private key on local machine
SSH verifies via cryptography

Tools: ssh, ssh-keygen

Keys: .pub (public), .pem (private)

Step 1: Generate Key (Local)

Execute the following command

ssh-keygen -t rsa -b 4096 -f ~/.ssh/server-ssh
# Generates: server-ssh (private), server-ssh.pub (public)

Step 2: Copy Public Key (Remote)

Append to ~/.ssh/authorized_keys on remote

vim ~/.ssh/authorized_keys  # Paste public key
chmod 600 ~/.ssh/authorized_keys
chmod 700 ~/.ssh

ssh -i ~/.ssh/server-ssh [email protected]

SSH Authentication