Single NAT is straightforward in dealing with port forwarding, but the problem is that many ISPs use another form of NAT ...

Or, for that matter, any server, maybe a dashboard you need external access for, or even a personal website — port forwarding ...

Port mirroring is a feature that duplicates network traffic from a source host’s port to a secondary host for analysis. It can be used for monitoring, troubleshooting, and analyzing network ...