On a new Raspberry (but sometimes elsewhere unfortunately), you’re able to connect through SSH directly with the root session. We’ll disable it, for security purposes.
Run this command :
# nano /etc/ssh/sshd_config
… find the line:
Replace the yes by no.
It’ll be impossible to connect through this session, don’t forget to check that another session is existing (with a password you know)
You can also change the default port of SSH.
In the same file, find:
Put another value instead of 22, and write it down somewhere unless you’ll have to
nmap your device to retrieve it
Now, reload the SSH daemon to parse and apply the new configuration :
# service sshd reload
Now you’ll have to connect with :
$ ssh SESSION@PI_IP -p PORT
If you need to copy some files from it, you’ll have to use
scp as below :
$ scp -P PORT SESSION@PI_IP:/path/to/your_remote_file /path/on/your/host