Hardware Reference
In-Depth Information
The
Local Address
column shows the network interface, a colon, and the port number
of each service. The addresses in the previous screenshot have the following meanings:
•
0.0.0.0
means that the service is listening on
all
network interfaces.
•
127.0.0.1
means that the service is bound to
localhost
, and cannot be
accessed from any other computer. If you're trying to port forward to a
service that's only listening on
localhost
, you need to edit the configuration
for that application and tell it to listen on all interfaces or the IP of your
primary interface.
•
192.168.1.10
means that the service is listening on the interface with this
specific IP. For example, you could configure the SSH service to listen only
on your Ethernet connection but not on your Wi-Fi connection.
Adding the forwarding rule
We now know the three things required to add a port forwarding rule for the SSH
service running on the Pi:
• It's listening on the IP address of the Pi (
192.168.1.10
in this example).
• It's using the
tcp
protocol
• It's listening for connections on port
22
You now have two options: either log in to your home router and add the port
forwarding rule manually, or try to add it through UPnP, which is a protocol
supported by many home routers.
The exact procedure for port forwarding differs slightly between router brands
but in general the input fields are like in the following screenshot:
Adding port forwarding rules on a router running Tomato firmware
