Security SSH Keys Ubuntu 16.04/18.04
Through this system authentication is performed via the public / private key pair.
Part I – Your Key
1. Generate the keys
In the ssh client (the Desktop) we will generate the keys:
ssh-keygen -t rsa -b 4096
- Enter file in which to save the key → [ENTER]
- Enter passphrase (empty for no passphrase): → each one chooses his own and repeats on next question
2. Send the key to the server
After completing the previous step you must send the key to the server:
ssh-copy-id [username]@[host]
- [username] → is the username to login to the server
- [host] → server IP
With step 2 the key was added to the file ~/.ssh/authorized_keys
Credits: https://www.carrondo.net
Review and tested by: Cristiano Costa