User's Manual

Chapter 11 NAT and Firewall (WAN to LAN)
NBG-510S User’s Guide
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2 If an application needs a continuous data stream, that port (range) will be tied up so that
another computer on the LAN can’t trigger it.
11.6 Port Triggering Screen
Click Network > NAT > Port Triggering to open the following screen. Use this screen to
change your ZyXEL Device’s trigger port settings.
" Only one LAN computer can use a trigger port (range) at a time.
Figure 61 Network > NAT > Port Triggering
The following table describes the labels in this screen.
11.7 Port Triggering Add/Edit Screen
Click the Add or Edit icon in the Network > NAT > Port Triggering screen to open this
screen. Use this screen to configure a port triggering rule.
Table 22 Network > NAT > Port Triggering
LABEL DESCRIPTION
Name This name identifies the trigger port rule.
Trigger Ports The trigger port range of ports causes (triggers) the ZyXEL Device to record the IP
address of the LAN computer that sent the traffic to a server on the WAN.
Incoming Ports This is the range of ports that a server on the WAN uses when it sends out a
service’s traffic. The ZyXEL Device forwards incoming traffic with these ports to
the LAN computer that requested the service.
Add icon This column provides icons to add, edit, and delete entries.
Click the Add icon to go to the screen where you can configure a new entry.
Click the Edit icon to go to the screen where you can edit the entry.
Click the Delete icon to remove an entry.