I am sure everyone using Azure must have done RDP
connections to either cloud services or virtual machines at least once or more. Below
is a standard architecture now-a-days for allowing RDP access to end users into
your cloud environment using a Jump box in between hosted inside a separate
subnet.
Things gets interesting when number of users requiring RDP
access to cloud environment increases. By default, there is a limit on Windows
OS as to how many concurrent RDP sessions it support.
A desktop version (Win 7 or 8.1) supports only 1 whereas the
server versions support 2. This make things bit complicated as if you have let’s
say 10 user requiring RDP access to your environment then you need 5 Jump
boxes. That's not ideal and this is where you need proper service to enable that. Something like Remote Desktop Services (RDS).
RDS is a proper & recommended way for enabling remote
connections when you have between 5 to 5000 users requesting/requiring RDP. It’s a
feature which you can enable in Windows Server (only) and it supports various
kinds of deployments for high availability, integration with Azure Active
Directory etc.
The downside is, unlike remote desktop feature in Windows,
RDS is not free and you require license for using this service. I will discuss
the features offered by RDS and what all you get for what you pay in a separate
blog but below is a quick comparison of RDS vs Remote Desktop feature.
Remote Desktop Services
(RDS) |
Remote Desktop Feature
|
Can support many simultaneous users.
|
Desktop operating systems are limited to one simultaneous user. Server operating systems are limited to two simultaneous users.
|
Proper licensing must be purchased and configured.
|
No additional licensing is required.
|
Used to access a full remote desktop or remote applications (RemoteApp).
|
Used to access the full remote desktop.
|
Supports advanced features such as RemoteFX USB Redirection and multimedia redirection.
|
Does not support advanced features.
|
Requires an infrastructure of multiple servers that has been properly planned and deployed.
|
Is enabled on a single computer.
|
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