D-Link DCS-5220 - Manual (Page 130)

10 D-Link DCS-50 User Manual
Section 5 - Troubleshooting
8. Can the DCS-5220 be connected to the network if it consists of only private IP addresses?
Yes, the Internet Camera can be connected to a LAN with private IP addresses.
9. Can the DCS-5220 be installed and work if a firewall exists on the network?
If a firewall exists on the network, port 80 needs to be opened for ordinary data communication. The DCS-5220
uses HTTP port and RTSP port to stream video data. 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 in the firewall device. Please refer to
page 124 for more information.
10. Why am I unable to access the DCS-5220 from a Web browser?
If a router or firewall is used on the network, the correct ports for the DCS-5220 may not be configured on the
router or firewall. To correct the problem, you need to determine if the DCS-5220 is behind a router or firewall and
if the router or firewall is properly configured for the ports the DCS-5220 is using. Refer to page 124 for help in
opening the correct ports on a router or firewall for use with the DCS-5220.
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 Internet Camera might be faulty.
11. Why does the Internet 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 Internet Camera to be accessible outside your local LAN. Check with the Network Administrator for
your network.
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. Please refer to page 124 for more information.