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Windows 2011 Remote Website 403.6 Error

I am in the process of migrating from windows 2003 SBS to windows 2011 SBS. I am running both servers within the same domain for my allowed 30 days. I only have FTP and some user data to finish moving. My problem is with https://Remote.<domain name>.com. Locally through the intranet or remotely when connected through VPN i can access the website and perform all functions. When out of the office and without VPN I get the error:

You are not authorized to view this page
The Web server you are attempting to reach has a list of IP addresses that are not allowed to access the Web site, and the IP address of your browsing computer is on this list.
--------------------------------------------------------------------------------

Please try the following:

Contact the Web site administrator if you believe you should be able to view this directory or page.
HTTP Error 403.6 - Forbidden: IP address of the client has been rejected.
Internet Information Services (IIS)


I have chedked IIS and only see blanks in the IP restriction areas. What is causing my problem?
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Commented:
make sure these things are fine:

- port 443 and 4125 are open
- make sure you certificate is correct
- make sure you have no ip address restrictions on IIS
- make sure you checked the right boxed on the remote access wizard

Run the internet connection wizard from the Server Management tool, and change the firewall settings to allow you access to Remote Web Workplace.

Commented:
Also go through the below article, it may help you in resolving the issue
http://support.microsoft.com/kb/306833
http://support.microsoft.com/kb/248043

Author

Commented:
No luck... I cannot find any thing in IIS that limits IP's. I even downloaded the SBS generated certificate and installed that on a test machine and it didnt work. Can you be more specific about where in ISS i should look?

Commented:
I am actually experiencing the same problem... were you able to find a solution to this?

Author

Commented:
Yes, as stated above by vinsvin. The big thing  for us  was to generate the certificate on the server and then install it on the PC's using remote access.