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- So here are the commands that
we have seen in this lesson.

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Let's start with firewall cmd,

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the interface to configure the firewall,

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the firewall on Red Hat
family Linux systems.

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Then we have used ufw, the
uncomplicated firewall,

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which is the default firewall on Ubuntu.

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You have seen SE managed
port, which is a requirement

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on Red Hat because we are running SSH

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on a non-default port and
SELinux doesn't like that.

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Next we have used SSH keys, ssh-keygen

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Then the first thing to generate a key.

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Then we use ssh-copy-id to copy the key

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over to the managed machine.

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Ssh-agent is how we
started an agent that can

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cash the pass race for the key.

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And ssh-add is how we added
the pass race to the SSH agent.

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Let's go do a lab.