Using Azure Domain Services with default domain name scheme

LA_Admin
LA_Admin used Ask the Experts™
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Hello everyone,

I am currently building a testing environment in Office 365/Azure to get a feel for Domain Services and how it can help our business. I currently have it setup with a <companyname>.onmicrosoft.com domain name. I am trying to configure LDAPS, and it requires me to create a DNS record with the external DNS provider so that the DNS name of the managed domain points to the external IP address that gets created during setup. (using steps listed here, under Task 5: Configure LDAPS)

My issue is that I am not using an external DNS provider, just what MS is providing. Is there something that I am doing wrong, or will I need to get ahold of an external DNS provider like NetSol?
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MaheshArchitect
Distinguished Expert 2018

Commented:
are you using contoso.onmicrosoft.com or your custom domain in azure

If you are using contoso.onmicrosoft.com, no dns entry is required, in fact you can't do it because you don't have control on that dns zone

If you are using custom domain, you would get custom dns zone for custom domain (public domain) where you can create required Host(A) record
I don't think this is your case
Further more, this step is optional and applicable only if you are accessing resources from managed domain over internet using LDAPS
Jian An LimSolutions Architect
Top Expert 2016
Commented:
hi.
do you have a domain like "mydomain.com" to use?

you must have your own domain ldap.mydomain.com , and cannot use vanity domain <tenant>.onmicrosoft.com

i have recently deployed this so i know the limitation well.
If you want to by pass, you can expose your LDAP via a kemp/netscaler load balancer
this will not require a wildcard certificate as well

Author

Commented:
So I went and bought a .com domain. I was able to generate an A record for the external IP address for LDAPS access within NetSol. When I attempt to join a physical laptop to the domain, it tells me that it cannot find it. Also, when I attempt to connect Azure ADDS to an Amazon Workspace directory via AD Connector, I get the following message: "Connectivity issues detected: DNS unavailable (TCP Port 53) for IP X.X.X.X. Please ensure that the listed ports are available and retry the operation".
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Jian An LimSolutions Architect
Top Expert 2016
Commented:
wait, what do you mean JOin to the domain?

you cannot joined a physical laptop to the domain unless you have site to site VPN.
MaheshArchitect
Distinguished Expert 2018

Commented:
In addition to above the functionality you are trying to explore is available only with Windows 10 machines
Jian An LimSolutions Architect
Top Expert 2016

Commented:
this is Azure Active directory domain services, NOT azure AD.
AADDS allows any windows to join to domain, as long as they are in the same network.
MaheshArchitect
Distinguished Expert 2018

Commented:
Thanks Jian.

Not aware with this.

Author

Commented:
Ok, so it would appear that I misinterpreted the ability of AADDS. That is no problem. Any ideas about the Amazon Workspaces issue?
Jian An LimSolutions Architect
Top Expert 2016

Commented:
what Amazon Workspaces issue?
as i said, do your both network (amazon and microsoft azure) are on the same (private) network, can they route via private IP?

AADDS is a domain controller, you never expose it directly via internet public IP address.
the only thing AADDS are exposing is the LDAPS that microsoft provided.
ALl other features (DOMAIN JOIN, kerberos and etc) required private IP address to function

Author

Commented:
From above:  "when I attempt to connect Azure ADDS to an Amazon Workspace directory via AD Connector, I get the following message: "Connectivity issues detected: DNS unavailable (TCP Port 53) for IP X.X.X.X. Please ensure that the listed ports are available and retry the operation"."
Solutions Architect
Top Expert 2016
Commented:
can you tell me technically how do you achieve this?

I am not a Amazon workspace experts so I am clueless how it works.
According to this http://docs.aws.amazon.com/workspaces/latest/adminguide/prep_connect.html
 , you need to have VPN between amazon and Azure.

you also need to run the connect verification to make sure it is OK.
my understand is AADDS should able to achieve that, but VPN and firewall might block it.

Author

Commented:
Anyone else have any experience here?
Jian An LimSolutions Architect
Top Expert 2016
Commented:
you can "request attention" below the question but you need to work with some one ..

I might not be experts in amazon but i indeed experts in Azure, especially my last project is working on AADDS preview.

YOu have not attempt to answer my previous question. can you kindly tell me whether you have a VPN on board?
also, you wrote "Connectivity issues detected: DNS unavailable (TCP Port 53) for IP X.X.X.X" is this X.X.X.X an internal IP or external IP. and if it is external IP, is it the LDAPS IP address provided by Microsoft?

Author

Commented:
To answer your question about the IP address, I realized I was using an internal address, so no wonder it couldn't find it.

So I have attempted to configure a VPN between AWS and Azure. I have configured static gateways on both sides and tried to complete the connection, but so far the tunnels are still down. I have found walkthrough's that mention point to site VPN by spinning up a VM on one side or the other and installing RRAS, but I would like to avoid running a VM if at all possible.

I have configured site to site VPN connections in Azure, and feel confident that my config here is correct, but am green in AWS. Do you know if this is possible? Also, is there a way to export my AWS config so that I can share it?
Jian An LimSolutions Architect
Top Expert 2016
Commented:
Jian An LimSolutions Architect
Top Expert 2016

Commented:
There are no AAADS connectivty between Azure and AWS.
a VPN is required.

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