Figure 59 Network > Nat > Port Forwarding > Add/Edit; Table 21 Network > Nat > Port Forwarding > Add/Edit - ZyXEL Communications NBG-510S User Manual

Chapter 11 NAT and Firewall (WAN to LAN)
Figure 59 Network > NAT > Port Forwarding > Add/Edit
The following table describes the labels in this screen.
Table 21 Network > NAT > Port Forwarding > Add/Edit
LABEL
Connections to be
made from
Remote System
for Service
Redirect to Local
System
Local Service
Should be
Apply
Cancel
84
DESCRIPTION
Select Any to allow connections from any IP address or domain name.
To only allow specific users to access the inside server, select Custom and
specify an IP address or domain name.
Select a service from the drop-down list box or select Custom and specify a port
number (or numbers) and protocol.
To enter a single port number, enter it in the first field.
To enter a range of port numbers, enter the starting port number in the first field
and the ending port number in the second field.
For a custom service, select the protocol the service uses. Choices are: TCP,
UDP, AH, ESP, and GRE.
Select a LAN computer from the drop-down list box or select Custom and specify
the IP address of a LAN computer.
Select what port number the ZyXEL Device when forwarding the service's traffic to
the LAN.
If the LAN computer uses the same port for the service as the incoming packet's
source port, select Same as Incoming Service.
If the LAN computer uses a different port for the service, select Custom and
specify the port.
Select whether the ZyXEL Device should forward (Allowed) or drop (Denied)
incoming traffic that matches this port forwarding policy.
For example, say you want to allow access for TCP ports 1000 to 2000, but block
TCP port 1500. You could configure a policy that allows TCP ports 1000 to 2000
and then add another policy (higher in the list) that blocks TCP port 1500.
Click Apply to save the settings.
Click Cancel to return to the previous screen without saving your changes.
NBG-510S User's Guide