Dns updating

The default configuration not only wastes global Internet resources but also introduces a multitude of security, privacy and intellectual property concerns.

The below information still holds true, but DNS-O-Matic, a free service from Open DNS, gives you an easy way to distribute your dynamic IP changes to multiple services with a single update.

Keep dynamic DNS hostnames and Open DNS updated at the same time.

You can find and download the official Dynamic IP updater clients for Windows, Mac and Linux using the links in the following table.

There are additional third-party clients and services available, but only the ones listed are supported by Open DNS.

Only if you know with certainty that the updates get sent only to a local DNS server should you run the Dynamic DNS Updates service.

Most home users who use DSL/Cable routers as DHCP/NAT servers to facilitate multiple host connections to the Internet should turn off dynamic DNS updates.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.``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.This leakage causes the following problems: Unfortunately, most users have no knowledge of their own misbehaving hosts broadcasting private information to the world.Similarly, steps 6-8 update the inverse mapping from the IP address to the domain name (type PTR RR).

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