Router port forwarding fields can be confusing
A rule usually needs a service name, the inside device address, an inside port, an outside port, and a . The main confusion is that people say to open “TCP and UDP,” but the screen may not make it obvious where those choices go. Some let you choose TCP, UDP, or both in one field.
Others require one separate rule for TCP and another separate rule for UDP. A uses the same basic idea when it needs to be reachable from outside the home .
Key points
- sends outside connections to a specific device inside the home .
- TCP and UDP are usually chosen in a field on the .
- Some need one rule for TCP and another rule for UDP.
- For a , the inside device address must point to the .