their internal Windows/AD domain name is blahblahblah.com and their public website is blahblahblah.com and they can't see their website while on the office network (the web site loads just fine from anywhere else). How do I fix this so they can see their public web site internally?

marked as duplicate by Ryan Ries, jscott, joeqwerty, HopelessN00b Dec 12 '14 at 4:24

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You rename the internal Active Directory domain to be someInternalName.blahblahblah.com.


Create a www host in blahblahblah.com zone internaly and make it point to your public IP.

If you really want to use the blahblahblah.com without the www, you can check, the name should resolve to your DC, so add the IIS role on the DC, add the domain blahblahblah.com in IIS, and do a 302 redirect to www.blahblahblah.com.

  • 1
    Please do NOT install IIS on your DC... Complete violation of security best practice. – Steve365 Dec 12 '14 at 10:07

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