Linux networking and firewalls give us plenty of options for redirecting traffic from one port to another. We can allow people outside our home to reach a web server we run in our internal network. That’s called destination NAT, ot DNAT. You can also redirect traffic to different ports on the same host. For example, if you have a daemon listening on port 3000, but you want people to reach that service on port 80, you can redirect traffic from 80 to 3000 on the same host (without network add...
