ZyXEL Communications NBG7815, Руководство пользователя

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Chapter 9 WAN
NBG7815 User’s Guide
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Port 7070 is a “trigger” port and causes the NBG7815 ( C ) to record Jane’s computer IP address. The
NBG7815 associates Jane's computer IP address with the "open" port range of 6970 – 7170.
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The Real Audio server responds using a port number ranging between 6970 – 7170.
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The NBG7815 forwards the traffic to Jane’s computer IP address. Only Jane can connect to the Real
Audio server until the connection is closed or times out. The NBG7815 times out in 3 minutes with UDP
(User Datagram Protocol) or 2 hours with TCP/IP (Transfer Control Protocol/Internet Protocol).
Use this screen to view the summary table of your NBG7815’s port trigger settings. Click Expert Mode >
WAN > NAT > Port Trigger to show the following screen.
Note: Only one LAN computer can use a port trigger (range) at a time.
Figure 51 Expert Mode > WAN > NAT > Port Trigger
The following table describes the labels in this screen.
9.7.1 Add Port Trigger Rule
Use this screen to configure your NBG7815’s port trigger settings. Click Expert Mode > WAN > NAT > Port
Trigger > Add Rule to show the following screen.
Table 32 Expert Mode > WAN > NAT > Port Trigger
LABEL DESCRIPTION
Port Trigger Rules (Max Limit: 32)
No. This is the rule index number.
Name This field displays a name to identify this rule.
Incoming Port This field displays a port number that a server on the WAN uses when it sends out a particular
service.
End Port This field displays a port number or the final port number in a range of port numbers.
Trigger Port This field displays a port number that causes the NBG7815 to record the IP address of the LAN
computer that sent then traffic to a server on the WAN.
End Port This field displays a port number or the ending port number in a range of port numbers.
Actions Click the icons under Actions to delete or edit an existing port trigger settings.
Click to delete the rule.
Click to edit the rule.