Microsoft Windows operating systems support a feature that dynamically updates the mappings of domain names to associated IP addresses assigned to hosts by DHCP servers.
This automatic updating, called Dynamic DNS Updates service, reduces the administrative overhead associated with manually administering DNS records of network hosts.
Similarly, steps 6-8 update the inverse mapping from the IP address to the domain name (type PTR RR).
Xp not updating dns
The default configuration not only wastes global Internet resources but also introduces a multitude of security, privacy and intellectual property concerns.
Leakage of private DNS updates is caused by inconsistent configuration between DNS servers and DHCP client/server entities.
After having upgraded a Windows Server 2003 Active Directory Domain to Server 2008, and upgraded client PCs from Windows XP to Windows 7, I'm seeing inconsistent dynamic DNS update behaviour.
Two domain controllers also have a DHCP and DNS role.
Both DHCP clients and servers can generate DNS updates.
To turn off DNS updates on Windows 2000/XP/2003 configured with DHCP clients (refer to Figure 1): To turn off DNS updates on Window Server 2000 running DHCP Server (refer to Figure 2 below): Microsoft Windows Server 2003 automatically sends DNS updates to each of its DHCP clients.As far as my other settings go, in the IPv4 "Properties" under DHCP Server, I have gone to the DNS tab and made sure that "Enable DNS dynamic updates according to the settings below:", "Always dynamically update DNS A and PTR records", "Discard A and PTR records when lease is deleted", and "Dynamically update DNS A and PTR records for DHCP clients that do not request updates..." are all selected.So, does anybody have any ideas or tips or anything for me to try and implement? While this service can reduce administrative overhead, it also can, and does, have deleterious effects on the larger Internet by leaking traffic regarding private IP addresses that should never leave the local area network.You do not need to disable dynamic DNS updates if: However, if you have configured your host to act as a DHCP client/server and you make use of the private IP address space (including 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16) specified in RFC1918, you should turn off the dynamic DNS update feature.``So what if my host leaks a few packets to the global Internet? '' The reason is that inconsistent configuration between your home hosts and your local DNS servers can, and often does, cause leakage of DNS updates for private IP addresses to the global Internet.