- So here are the commands that we have seen in this lesson.
Let's start with firewall cmd,
the interface to configure the firewall,
the firewall on Red Hat family Linux systems.
Then we have used ufw, the uncomplicated firewall,
which is the default firewall on Ubuntu.
You have seen SE managed port, which is a requirement
on Red Hat because we are running SSH
on a non-default port and SELinux doesn't like that.
Next we have used SSH keys, ssh-keygen
Then the first thing to generate a key.
Then we use ssh-copy-id to copy the key
over to the managed machine.
Ssh-agent is how we started an agent that can
cash the pass race for the key.
And ssh-add is how we added the pass race to the SSH agent.
Let's go do a lab.