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Dynamic IP and DNS with a NAT

Posted on 2006-06-20
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Last Modified: 2010-03-18
I have a single dynamic IP. What I think I can do is sign up for an account at dyndns and get something like mydomain.dyndns.tld, set it to my ip (a router with nat). At my registrar for my real domain, set the dns servers to mydomain.dyndns.tld. I forward the port to the correct private IP. I can then use my own DNS servers and set them up how I wish. First of all, will this work? Second, how do I solve the problem of the DNS server being on a private IP? In other words, how do I update my DNS servers with my dynamic public IP when it is behind the NAT?
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Question by:smpolymen
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Blaz earned 500 total points
ID: 16948645
For a good setup of DNS you need two DNS servers on two different networks (ie if one network crashes completely, the other should be accessible). Each DNS server should have a static IP.

It would still be posible to put a single DNS server on a dynamic IP, but that is VERY poor design. Your DNS record should point to mydomain.dyndns.tld and not to an IP.
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