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Let's review the commands that
we have seen in this lesson.

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Firewall CMD is what we used to
open the firewall after reconfiguring SSH to listen

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on a non standard port. But that's
Red Hat and family on Ubuntu. UFW is

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doing the equivalent semanaged port is what
you need to tell Selinux on the Red

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Hat system to allow SSH to
bind to this non default port.

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Then you have used SSH keygen
and ssh copyId and ssh agent

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and ssh. Add all of
these to set up keybase authentication.