Chapter 7 Network Setting

7.15.2 Trigger Port Forwarding Example

The following is an example of trigger port forwarding. In this example, J is Jane’s computer and S is the Real Audio server.

Figure 59 Trigger Port Forwarding Example

1Jane requests a file from the Real Audio server (port 7070).

2Port 7070 is a “trigger” port and causes the WiMAX Device to record Jane’s computer IP address. The WiMAX Device associates Jane's computer IP address with the "incoming" port range of 6970- 7170.

3The Real Audio server responds using a port number ranging between 6970-7170.

4The WiMAX Device forwards the traffic to Jane’s computer IP address.

5Only Jane can connect to the Real Audio server until the connection is closed or times out. The WiMAX Device times out in three minutes with UDP (User Datagram Protocol), or two hours with TCP/IP (Transfer Control Protocol/Internet Protocol).

Two points to remember about trigger ports:

1Trigger events only happen on data that is coming from inside the WiMAX Device and going to the outside.

2If 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.

7.16DMZ

Use this page to set the IP address of your network DMZ (if you have one) for the WiMAX Device. All incoming packets received by this WiMAX Device’s WAN interface will be forwarded to the DMZ host you set.

Click Network Setting > NAT > DMZ to open this screen as shown next.

 

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WiMAX Device Configuration User’s Guide