The Trigger Port Screen - ZyXEL Communications P-870HN-51B - V1.0 Manual

The following table describes the labels in this screen.
Table 38 Port Forwarding Edit
LABEL
Active
Service Name
WAN Interface
External Start
Port
External End
Port
Internal Start
Port
Internal End
Port
Server IP
Address
Protocol
Back
Apply
Cancel

8.4 The Trigger Port Screen

Some services use a dedicated range of ports on the client side and a dedicated
range of ports on the server side. With regular port forwarding you set a
forwarding port in NAT to forward a service (coming in from the server on the
WAN) to the IP address of a computer on the client side (LAN). The problem is
that port forwarding only forwards a service to a single LAN IP address. In order to
use the same service on a different LAN computer, you have to manually replace
the LAN computer's IP address in the forwarding port with another LAN
computer's IP address.
P-870HN-51b User's Guide
DESCRIPTION
Clear the check box to disable the rule. Select the check box to enable it.
This field is not editable if you are configuring a User Define rule.
Enter a name to identify this rule. This field is read-only if you click the
Edit icon in the Port Forwarding screen.
Select a WAN interface for which you want to configure port forwarding
rules.
Enter the original destination port for the packets.
To forward only one port, enter the port number again in the External
End Port field.
To forward a series of ports, enter the start port number here and the
end port number in the External End Port field.
Enter the last port of the original destination port range.
To forward only one port, enter the port number in the External Start
Port field above and then enter it again in this field.
To forward a series of ports, enter the last port number in a series that
begins with the port number in the External Start Port field above.
Enter the port number here to which you want the ZyXEL Device to
translate the incoming port. For a range of ports, enter the first number
of the range to which you want the incoming ports translated.
Enter the last port of the translated port range.
Enter the inside IP address of the virtual server here.
Select the protocol supported by this virtual server. Choices are TCP,
UDP, or TCP/UDP.
Click Back to return to the previous screen.
Click Apply to save your changes back to the ZyXEL Device.
Click Cancel to begin configuring this screen afresh.
Chapter 8 Network Address Translation (NAT)
137