I was doing some research to get rid of a problem that I have in my Company about DNS questions.
The following link helped me understanding most of my questions, but one. Internal and External DNS from Different Servers, Same Zone
I understand that I'm not creating A or CNAME entries for my internal servers, but a whole new zone, where the root of each zone resolves my internal addresses.
But what if I need to overwrite an entry? Here's the example:
I have a domain called mydomain.com hosted in an external server that resolves all my websites: www.mydomain.com(CNAME entry for mydomain.com), mail.mydomain.com(A entry for 126.96.36.199), app1.mydomain.com(A entry for 188.8.131.52) and so. And I have my internal DNS resolving "subzones" of mydomain.com as dev.mydomain.com (zone that has root pointing to 10.0.0.1), svn.mydomain.com (zone that has root pointing to 10.0.0.2).
BUT, my app1 server a web server hosted internally that I open to Internet. And my question is if is that anyway to overwrite the A entry for that server that is in my external DNS resolving to my app1 server public IP, for a person that tries to resolve the name from my internal network to get 10.0.0.3, that is the app1 internal address.
Was I clear enough?
Thanks in advance,