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2008 RDS Security certificate name mismatch

Posted on 2015-01-26
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Last Modified: 2015-02-06
Hi guys,

I have a Windows 2008 RDS server farm with one session broker and two session hosts. When attempting to connect to the farm name (which is in DNS as a round robin setup), I get the attached certificate error. It doesn't matter if I install the certificate or trust it, I still am unable to connect without getting popups for both session hosts. Any help you can offer would be greatly appreciated. Thanks!

-Roy
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Question by:roycbene
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6 Comments
 
LVL 25

Expert Comment

by:Mohammed Khawaja
ID: 40570826
There is no attachment.
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Author Comment

by:roycbene
ID: 40570849
Not sure why that didn't attach. Here you are.
cert-error.JPG
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LVL 25

Expert Comment

by:Mohammed Khawaja
ID: 40571113
This error is displayed as by default RDS using self signed certificates and they are not part of a trusted root certificate server.  To get over this issue, you have two choices:  purchased SSL certificates from a vendor such as Verisign or if you have your own certificate server, generate a certificate on your root CA.  With AD, you can install your own Root CA.  Below is a link stating how you could do this:

http://www.derekseaman.com/2013/01/creating-custom-remote-desktop-services.html
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LVL 3

Author Comment

by:roycbene
ID: 40571201
Ok. I have a GoDaddy certificate that I installed with the farm name as one of the Subject Alternative names. My farm is set up like this

-Session Broker (RDS02)
-Two session hosts (RDS03 and RDS04)
-Round Robin in DNS where A record for Farm name is set on each session host IP.

Questions:

1. Do I need to install the certificate on the Session broker AND The two session hosts? If so, what store?
2. Do I need RDS03 and RDS04 as Subject Alternative Names in the certificate? Or will the farm name be sufficient.

Thanks!

-Roy
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Accepted Solution

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Mohammed Khawaja earned 500 total points
ID: 40572715
You need one certificate which should be SAN and contain the FQDN for the gateway as well as the fqdn for each RDS server.
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LVL 3

Author Comment

by:roycbene
ID: 40573241
Ok,

So I've rekeyed my public cert 'mail.mydomain.com'. The SANs in the cert have the farm name, as well as all individual servers. I assigned the cert and intermediates (all in the pfx file) to the server. I put the primary in the personal store and the intermediates, obviously, in the intermediate store (on each server). However, when users go to connect, they still get a name mismatch error. Why is this? Is having all the names in the SANs not enough?

-Roy
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