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Manual - Surveillance System, Security Cameras, and CCTV ...

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Useful Utilities<br />

This chapter discusses some advanced features <strong>and</strong> utilities that could help the administrator to<br />

maximize system performance in a security network.<br />

11.1 Dynamic DNS<br />

CHAPTER<br />

11<br />

The Dynamic DNS is an application that allows users to register domain names that always point to<br />

their GV-<strong>System</strong>s. This application is only necessary when your GV-<strong>System</strong> is using a dynamic IP<br />

address. If so, the DDNS will update GV-<strong>System</strong>’s IP address to DNS Server every 10 minutes.<br />

Therefore, even if your GV-<strong>System</strong>’s IP address changes, you can still locate it by using the registered<br />

domain name.<br />

Dynamic DNS supports Windows XP, Windows Vista, Windows Server 2008 <strong>and</strong> Windows 7, but it<br />

does not support Windows 95/98 or ME.<br />

Dynamic DNS uploads IP addresses over the Internet through ports 80 <strong>and</strong> 81. If your GV-<strong>System</strong> is<br />

connected behind a router or firewall, make sure ports 80 <strong>and</strong> 81 are enabled. Dynamic DNS will only<br />

upload global IP addresses. If your GV-<strong>System</strong> is using virtual IP, NAT port mapping should be done<br />

first.<br />

IMPORTANT: The DDNS service is provided purely as a favor to you. We hope it simplifies the process<br />

of trying to connect an IP video device to the network. GeoVision does not <strong>and</strong> cannot warrant that the<br />

DDNS service will be uninterrupted or error free. Please read Terms of Service carefully before using<br />

the service. Besides GeoVision, you can also obtain the free DDNS service from these providers:<br />

DynDNS.org <strong>and</strong> No-IP.com.

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