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Appendix A: Troubleshooting
Common Problems and Solutions
IP Telephony System
G. Enter the IP address of the PC or network device that you want the port server to go to. For example, if the
web server’s Ethernet adapter IP address is 192.168.0.100, you would enter 100 in the field provided.
Check “Appendix E: Finding the MAC Address and IP Address for Your Ethernet Adapter” for details on
getting an IP address.
H. Check the Enabled option for the port services you want to use. Consider the examples below:
When you have completed the configuration, click the Submit All Changes button.
16.I can’t get the Internet game, server, or application to work.
If you are having difficulties getting any Internet game, server, or application to function properly, consider
exposing one PC to the Internet using DeMilitarized Zone (DMZ) hosting. This option is available when an
application requires too many ports or when you are not sure which port services to use. Make sure you
disable all the forwarding entries if you want to successfully use DMZ hosting, since forwarding has priority
over DMZ hosting. (In other words, data that enters the System will be checked first by the forwarding
settings. If the port number that the data enters from does not have port forwarding, then the System will
send the data to whichever PC or network device you set for DMZ hosting.) Follow these steps to set DMZ
hosting:
A. Access the System’s Web-based Utility by going to http://192.168.0.1 or the IP address of the System.
Go to the Router => Application tab.
B. Disable or remove the entries you have entered for forwarding. Keep this information in case you want to
use it at a later time.
C. Select yes from the Enable DMZ drop-down menu.
D. Enter the Ethernet adapter’s IP address of the computer you want exposed to the Internet. This will
bypass the NAT security for that computer. Please refer to “Appendix E: Finding the MAC Address and IP
Address for Your Ethernet Adapter” for details on getting an IP address.
Once completed with the configuration, click the Submit All Changes button.
Enable Application Starting and
Ending Ports
Protocol IP Address
yes UT 7777 to 27900 Both 192.168.0.100
yes Halflife 27015 to 27015 Both 192.168.0.105
yes PC Anywhere 5631 to 5631 UDP 192.168.0.102
yes VPN IPSEC 500 to 500 UDP 192.168.0.100
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