How do I disable SSH

[JohnQPublic]

How do I disable SSH and then enable it later? 

[zador.blood.stained]

sudo systemctl disable --now sshd
sudo systemctl enable --now sshd

This will disable/enable and immediately stop/start the sshd daemon.

[JohnQPublic]

I get systemctl: unrecognized option '--now"

I also tried sudo systemctl disable ssh

I did something but not disabling ssh (I tried with Putty).

[zador.blood.stained]

8 minutes ago, JohnQPublic said:

I get systemctl: unrecognized option '--now"

--now was added in newer versions, so you need to use 2 separate commands instead

sudo systemctl disable sshd
sudo systemctl stop sshd

sudo systemctl enable sshd
sudo systemctl start sshd