D-Link DCS-3430 User Manual page 57

Section 5 - Troubleshooting
9. Can the DCS-3411/3430 be installed and work if a firewall exists on the network?
If a firewall exists on the network, port 80 is open for ordinary data communication. The DCS-3411/3430 uses port 5002
for streaming audio and port 5003 for streaming video. These ports (or the ports you specify from the Advanced Tab in the
Configuration screen if you change the default ports) need to be opened on the firewall.
10. Why am I unable to access the DCS-3411/3430 from a Web browser?
If a router or firewall is used on the network, the correct ports for the DCS-3411/3430 may not be configured on the router or
firewall. To correct the problem, you need to determine if the DCS-3411/3430 is behind a router or firewall and if the router
or firewall is properly configured for the ports the DCS-3411/3430 is using. Other possible problems might be due to the
network cable. Try replacing your network cable. Test the network interface of the product by connecting a local computer
to the unit, utilizing a Ethernet crossover cable. If the problem is not solved the Network Camera might be faulty.
11. Why does the Network Camera work locally but not externally?
This might be caused by network firewall protection. The firewall may need to have some settings changed in order for the
Network Camera to be accessible outside your local LAN. Check with the Network Administrator for your network.
Make sure that the Network 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 Network
Camera to be accessed outside your local LAN.
12. I connected the Network Camera directly to a computer with a cross-over cable Ethernet cable and received the
following Windows error upon running the Installation Wizard:
This Windows error will occur if the Network Camera is connected to a computer that is not properly configured with a valid IP
address. Turn off DHCP from the Network Settings in Windows and configure the computer with a valid IP address, or connect
the camera to a router with DHCP enabled. This error can also occur if the Installation Wizard icon is clicked on more than
once from the setup wizard.
13. Noisy images occur. How can I solve the problem?
The video images might be noisy if the Network Camera is used in a very low light environment. To solve this issue you need
more lighting.
D-Link DCS-3411/3430 User Manual 57