D-Link DCS-900 Manual page 66

Section 6 - Troubleshooting
Fast Ethernet Internet Camera Installation
Why does the Power LED not light up constantly?
The power supply used might be at fault. Confirm that you are using the provided power supply, which is DC 5V,
for the Internet Camera. Also verify that the power supply is well connected, and/or the option to turn off the LED is
enabled.
Why does the LAN LED not light up properly?
There might be a problem with the network cable. To confirm that the cables are working, PING the address of a known
device on the network. If the cabling is OK and your network is reachable, you should receive a reply similar to the
following (...bytes = 32 time = 2 ms).
Another possible problem may be that the network device utilized by the Internet Camera is not functioning properly,
such as hubs or switches. Confirm the power for the devices are well connected and functioning properly, and/or the
option to turn off the LED is enabled.
Why does the Internet Camera work locally but not remotely?
This might be caused by the firewall protection. Check the Internet firewall with your system administrator. The firewall
may need to have some settings changed in order for the Internet Camera to be accessible outside your local LAN.
Refer to page 39 for more information about installing your camera behind a router.
Make sure that the Internet Camera isn't conflicting with any web server you may have running on your network.
The default router setting might be a possible reason. Check that the configuration of the router settings allow the
Internet Camera to be accessed outside your local LAN.
D-Link DCS-900 User Manual 66