Welcome!

Containers Expo Blog Authors: Elizabeth White, Pat Romanski, Yeshim Deniz, Stackify Blog, Destiny Bertucci

Related Topics: Containers Expo Blog, Microservices Expo, Microsoft Cloud, @CloudExpo

Containers Expo Blog: Article

Understanding Remote Desktop Services (RDS)

The backbone of Microsoft VDI Solution

In Windows Server 2008 R2 (WS2008R2), Terminal Services (TS) has been expanded and renamed to Remote Desktop Services (RDS). RDS is the backbone of Microsoft's VDI solutions. And in Windows Server 2012, RDS is further enhanced and with a scenario-based configuration wizard. Still the concept and architecture remain very much the same since WS2008R2. The new and enhanced architecture takes advantage of virtualization and makes remote access a much flexible solution with new deployment scenarios. To realize the capabilities of RDS, it is essential to understand the functions of key architectural components and how they complement one another to process a RDS request. There are many new terms and acronyms to get familiar with in the context of RDS. For the remainder of this post, notice RDS implies the server platform of WS2008R2 and later, while TS implies WS2008.

There are five main architectural components in RDS, as shown, and all require a RDS licensing server. Each component includes a set of features designed to achieve particular functions. Together, the five form a framework for accessing Terminal Services applications, remote desktops, and virtual desktops. Essentially, WS2008R2 offers a set of building blocks with essential functions for constructing enterprise remote access infrastructure.

To start, a user will access a RDS webpage by specifying an URL where RDS resources are published to. This interface, provided by Remote Desktop Web Access (RDWA) and configured with a local IIS with SSL, is the web access point to RemoteApp and VDI. The URL is consistent regardless how resources are organized, composed, and published from multiple RDS session hosts behind the scene. By default, RDS publishes resources at https://the-FQDN-of-a-RDWA-server/rdweb and this URL is the only information a system administrator needs to provide to a user for accessing authorized resources via RDS. A user will need to be authenticated with one's AD credentials when accessing the URL and the RemoteApp programs presented by this URL is trimmed with access control list. Namely, an authenticated user will see and be able to access only authorized RemoteApp programs.

Remote Desktop Gateway (RDG) is optional and functions very much the same with that in TS. A RDG is to be placed at the edge of a corporate network to filter out incoming RDS requests by referencing criteria defined in a designated Network Policy Server (NPS). With a server certificate, RDG offers secure remote access to RDS infrastructure. As far as a system administrator is concerned, RDG is the boundary of a RDS network. There are two policies in NPS relevant to an associated RDG:

  • One is Connection Authorization Policy or CAP. I call it a user authorization list, showing who can access an associated RDG
  • The other is Resource Authorization Policy or RAP. In essence, this is a resource list specifying which devices a CAP user can connect to via an associated RDG.

In RDS, applications are installed and published in a Remote Desktop Session Host (RDSH) similar to a TS Session Host, or simply a Terminal Server in a TS solution. A RDSH loads applications, crunches numbers, and produces results. It is our trusted and beloved working horse in a RDS solution. Digital signing can be easily enabled in a RDSH with a certificate. Multiple RDSHs can be deployed along with a load balancing technology. Which requires every RDSH in a load-balancing group to be identically configured with the same applications.

A noticeable enhancement in RDSH (as compared with TS Session Host) is the ability to trim the presence of a published application based on the access control list (ACL) of the application. An authorized user will see, hence have an access to, only published applications of which the user is authorized in the ACL. By default, the Everyone group is included in a published application's ACL, and all connected user will have access to a published application.

Remote Desktop Virtualization Host (RDVH) is a new feature which serves requests for virtual desktops running in virtual machines, or VMs. A RDVH server is a Hyper-V based host, for instance a Windows Server with Hyper-V server role enabled. When serving a VM-based request, an associated RDVH will automatically start an intended VM, if the VM is not already running. And a user will always be prompted for credentials when accessing a virtual desktop. However, a RDVH does not directly accept connection requests and it uses a designated RDSH as a "redirector" for serving VM-based requests. The pairing of a RDVH and its redirector is defined in Remote Desktop Connection Broker (RDCB) when adding a RDVH as a resource.

Remote Desktop Connection Broker (RDCB), an expansion of the Terminal Services Session Broker in TS, provides a unified experience for setting up user access to traditional TS applications and virtual machine (VM)-based virtual desktops. Here, a virtual desktop can be running in either a designated VM, or a VM dynamically picked based on load balancing from a defined VM pool. A system administrator will use the RDCB console, called Remote Desktop Connection Manager, to include RDSHs, TS Servers, and RDVHs such that those applications published by the RDSHs and TS Servers, and those VMs running in RDVHs can be later composed and presented to users with a consistent URL by RDWA. And with this consistent URL, authenticated users can access authorized RemoteApp programs and virtual desktops.

A Remote Desktop (RD) Client gets connection information from the RDWA server in a RDS solution. If a RD client is outside of a corporate network, the client connects through a RDG. If a RD client is internal, the client can then directly connect to an intended RDSH or RDVH once RDCB provides the connection information. In both cases, RDCB plays a central role to make sure a client gets connected to a correct resource. With certificates, a system administrator can configure digital signing and single sign-on among RDS components to provide a great user experience with high security.

Conceptually, RDCB is the chief intelligence and operation officer of a RDS solution and knows which is where, whom to talk to, and what to do with a RDS request. Before a logical connection can be established between a client and a target RDSH or RDVH, RDCB acts as a go-between passing and forwarding pertinent information to and from associated parties when serving a RDS request. From a 50,000-foot view, a remote client uses RDWA/RDG to obtain access to a target RDSH or RDVH, while RDCB connects the client to a session on the target RDSH, or an intended VM configured in a target RDVH. Above is a RDS architecture poster with visual presentation on how all flow together. Http://aka.ms/free has number of free e-books and this poster for additional information of WS2008R2 Active Directory, RDS, and other components.

The configuration in WS2008 is a bit challenging with many details easily overlooked. Windows Server 2012 greatly improved the user experience by facilitating the configuration processes with a scenario-based wizard. Stay tuned and I will further discuss this in an upcoming blog post series.

Recommended additional reading on RDS/VDI/App-V, cloud essentials, and private cloud

[This is a cross-posting from http://blogs.technet.com/yungchou.]

More Stories By Yung Chou

Yung Chou is a Technology Evangelist in Microsoft. Within the company, he has had opportunities serving customers in the areas of support account management, technical support, technical sales, and evangelism. Prior to Microsoft, he had established capacities in system programming, application development, consulting services, and IT management. His recent technical focuses have been in virtualization and cloud computing with strong interests in hybrid cloud and emerging enterprise computing architecture. He is a frequent speaker in Microsoft conferences, roadshow, and TechNet events.

@ThingsExpo Stories
BnkToTheFuture.com is the largest online investment platform for investing in FinTech, Bitcoin and Blockchain companies. We believe the future of finance looks very different from the past and we aim to invest and provide trading opportunities for qualifying investors that want to build a portfolio in the sector in compliance with international financial regulations.
In his keynote at 18th Cloud Expo, Andrew Keys, Co-Founder of ConsenSys Enterprise, provided an overview of the evolution of the Internet and the Database and the future of their combination – the Blockchain. Andrew Keys is Co-Founder of ConsenSys Enterprise. He comes to ConsenSys Enterprise with capital markets, technology and entrepreneurial experience. Previously, he worked for UBS investment bank in equities analysis. Later, he was responsible for the creation and distribution of life settle...
Product connectivity goes hand and hand these days with increased use of personal data. New IoT devices are becoming more personalized than ever before. In his session at 22nd Cloud Expo | DXWorld Expo, Nicolas Fierro, CEO of MIMIR Blockchain Solutions, will discuss how in order to protect your data and privacy, IoT applications need to embrace Blockchain technology for a new level of product security never before seen - or needed.
Leading companies, from the Global Fortune 500 to the smallest companies, are adopting hybrid cloud as the path to business advantage. Hybrid cloud depends on cloud services and on-premises infrastructure working in unison. Successful implementations require new levels of data mobility, enabled by an automated and seamless flow across on-premises and cloud resources. In his general session at 21st Cloud Expo, Greg Tevis, an IBM Storage Software Technical Strategist and Customer Solution Architec...
Imagine if you will, a retail floor so densely packed with sensors that they can pick up the movements of insects scurrying across a store aisle. Or a component of a piece of factory equipment so well-instrumented that its digital twin provides resolution down to the micrometer.
"IBM is really all in on blockchain. We take a look at sort of the history of blockchain ledger technologies. It started out with bitcoin, Ethereum, and IBM evaluated these particular blockchain technologies and found they were anonymous and permissionless and that many companies were looking for permissioned blockchain," stated René Bostic, Technical VP of the IBM Cloud Unit in North America, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Conventi...
When shopping for a new data processing platform for IoT solutions, many development teams want to be able to test-drive options before making a choice. Yet when evaluating an IoT solution, it’s simply not feasible to do so at scale with physical devices. Building a sensor simulator is the next best choice; however, generating a realistic simulation at very high TPS with ease of configurability is a formidable challenge. When dealing with multiple application or transport protocols, you would be...
Nordstrom is transforming the way that they do business and the cloud is the key to enabling speed and hyper personalized customer experiences. In his session at 21st Cloud Expo, Ken Schow, VP of Engineering at Nordstrom, discussed some of the key learnings and common pitfalls of large enterprises moving to the cloud. This includes strategies around choosing a cloud provider(s), architecture, and lessons learned. In addition, he covered some of the best practices for structured team migration an...
In his session at 21st Cloud Expo, Raju Shreewastava, founder of Big Data Trunk, provided a fun and simple way to introduce Machine Leaning to anyone and everyone. He solved a machine learning problem and demonstrated an easy way to be able to do machine learning without even coding. Raju Shreewastava is the founder of Big Data Trunk (www.BigDataTrunk.com), a Big Data Training and consulting firm with offices in the United States. He previously led the data warehouse/business intelligence and B...
No hype cycles or predictions of a gazillion things here. IoT is here. You get it. You know your business and have great ideas for a business transformation strategy. What comes next? Time to make it happen. In his session at @ThingsExpo, Jay Mason, an Associate Partner of Analytics, IoT & Cybersecurity at M&S Consulting, presented a step-by-step plan to develop your technology implementation strategy. He also discussed the evaluation of communication standards and IoT messaging protocols, data...
Smart cities have the potential to change our lives at so many levels for citizens: less pollution, reduced parking obstacles, better health, education and more energy savings. Real-time data streaming and the Internet of Things (IoT) possess the power to turn this vision into a reality. However, most organizations today are building their data infrastructure to focus solely on addressing immediate business needs vs. a platform capable of quickly adapting emerging technologies to address future ...
Coca-Cola’s Google powered digital signage system lays the groundwork for a more valuable connection between Coke and its customers. Digital signs pair software with high-resolution displays so that a message can be changed instantly based on what the operator wants to communicate or sell. In their Day 3 Keynote at 21st Cloud Expo, Greg Chambers, Global Group Director, Digital Innovation, Coca-Cola, and Vidya Nagarajan, a Senior Product Manager at Google, discussed how from store operations and ...
A strange thing is happening along the way to the Internet of Things, namely far too many devices to work with and manage. It has become clear that we'll need much higher efficiency user experiences that can allow us to more easily and scalably work with the thousands of devices that will soon be in each of our lives. Enter the conversational interface revolution, combining bots we can literally talk with, gesture to, and even direct with our thoughts, with embedded artificial intelligence, whic...
We are given a desktop platform with Java 8 or Java 9 installed and seek to find a way to deploy high-performance Java applications that use Java 3D and/or Jogl without having to run an installer. We are subject to the constraint that the applications be signed and deployed so that they can be run in a trusted environment (i.e., outside of the sandbox). Further, we seek to do this in a way that does not depend on bundling a JRE with our applications, as this makes downloads and installations rat...
Widespread fragmentation is stalling the growth of the IIoT and making it difficult for partners to work together. The number of software platforms, apps, hardware and connectivity standards is creating paralysis among businesses that are afraid of being locked into a solution. EdgeX Foundry is unifying the community around a common IoT edge framework and an ecosystem of interoperable components.
DX World EXPO, LLC, a Lighthouse Point, Florida-based startup trade show producer and the creator of "DXWorldEXPO® - Digital Transformation Conference & Expo" has announced its executive management team. The team is headed by Levent Selamoglu, who has been named CEO. "Now is the time for a truly global DX event, to bring together the leading minds from the technology world in a conversation about Digital Transformation," he said in making the announcement.
In this strange new world where more and more power is drawn from business technology, companies are effectively straddling two paths on the road to innovation and transformation into digital enterprises. The first path is the heritage trail – with “legacy” technology forming the background. Here, extant technologies are transformed by core IT teams to provide more API-driven approaches. Legacy systems can restrict companies that are transitioning into digital enterprises. To truly become a lead...
Digital Transformation (DX) is not a "one-size-fits all" strategy. Each organization needs to develop its own unique, long-term DX plan. It must do so by realizing that we now live in a data-driven age, and that technologies such as Cloud Computing, Big Data, the IoT, Cognitive Computing, and Blockchain are only tools. In her general session at 21st Cloud Expo, Rebecca Wanta explained how the strategy must focus on DX and include a commitment from top management to create great IT jobs, monitor ...
"Cloud Academy is an enterprise training platform for the cloud, specifically public clouds. We offer guided learning experiences on AWS, Azure, Google Cloud and all the surrounding methodologies and technologies that you need to know and your teams need to know in order to leverage the full benefits of the cloud," explained Alex Brower, VP of Marketing at Cloud Academy, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clar...
The IoT Will Grow: In what might be the most obvious prediction of the decade, the IoT will continue to expand next year, with more and more devices coming online every single day. What isn’t so obvious about this prediction: where that growth will occur. The retail, healthcare, and industrial/supply chain industries will likely see the greatest growth. Forrester Research has predicted the IoT will become “the backbone” of customer value as it continues to grow. It is no surprise that retail is ...