|By Yung Chou||
|May 31, 2012 11:00 AM EDT||
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.
[This is a cross-posting from http://blogs.technet.com/yungchou.]
The Internet of Things (IoT) is going to require a new way of thinking and of developing software for speed, security and innovation. This requires IT leaders to balance business as usual while anticipating for the next market and technology trends. Cloud provides the right IT asset portfolio to help today’s IT leaders manage the old and prepare for the new. Today the cloud conversation is evolving from private and public to hybrid. This session will provide use cases and insights to reinforce the value of the network in helping organizations to maximize their company’s cloud experience.
Oct. 1, 2014 11:00 PM EDT Reads: 976
Cultural, regulatory, environmental, political and economic (CREPE) conditions over the past decade are creating cross-industry solution spaces that require processes and technologies from both the Internet of Things (IoT), and Data Management and Analytics (DMA). These solution spaces are evolving into Sensor Analytics Ecosystems (SAE) that represent significant new opportunities for organizations of all types. Public Utilities throughout the world, providing electricity, natural gas and water, are pursuing SmartGrid initiatives that represent one of the more mature examples of SAE. We have spoken with, or attended presentations from, utilities in the United States, South America, Asia and Europe. This session will provide a look at the CREPE drivers for SmartGrids and the solution spaces used by SmartGrids today and planned for the near future. All organizations can learn from SmartGrid’s use of Predictive Maintenance, Demand Prediction, Cloud, Big Data and Customer-facing Dashboards...
Oct. 1, 2014 11:00 PM EDT Reads: 791
IoT is still a vague buzzword for many people. In his session at Internet of @ThingsExpo, Mike Kavis, Vice President & Principal Cloud Architect at Cloud Technology Partners, will discuss the business value of IoT that goes far beyond the general public's perception that IoT is all about wearables and home consumer services. The presentation will also discuss how IoT is perceived by investors and how venture capitalist access this space. Other topics to discuss are barriers to success, what is new, what is old, and what the future may hold.
Oct. 1, 2014 10:00 PM EDT Reads: 1,731
Whether you're a startup or a 100 year old enterprise, the Internet of Things offers a variety of new capabilities for your business. IoT style solutions can help you get closer your customers, launch new product lines and take over an industry. Some companies are dipping their toes in, but many have already taken the plunge, all while dramatic new capabilities continue to emerge. In his session at Internet of @ThingsExpo, Reid Carlberg, Senior Director, Developer Evangelism at salesforce.com, to discuss real-world use cases, patterns and opportunities you can harness today.
Oct. 1, 2014 08:30 PM EDT Reads: 2,150
All major researchers estimate there will be tens of billions devices – computers, smartphones, tablets, and sensors – connected to the Internet by 2020. This number will continue to grow at a rapid pace for the next several decades. With major technology companies and startups seriously embracing IoT strategies, now is the perfect time to attend @ThingsExpo in Silicon Valley. Learn what is going on, contribute to the discussions, and ensure that your enterprise is as "IoT-Ready" as it can be!
Oct. 1, 2014 05:00 PM EDT Reads: 2,371
Noted IoT expert and researcher Joseph di Paolantonio (pictured below) has joined the @ThingsExpo faculty. Joseph, who describes himself as an “Independent Thinker” from DataArchon, will speak on the topic of “Smart Grids & Managing Big Utilities.” Over his career, Joseph di Paolantonio has worked in the energy, renewables, aerospace, telecommunications, and information technology industries. His expertise is in data analysis, system engineering, Bayesian statistics, data warehouses, business intelligence, data mining, predictive methods, and very large databases (VLDB). Prior to DataArchon, he served as a VP and Principal Analyst with Constellation Group. He is a member of the Boulder (Colo.) Brain Trust, an organization with a mission “to benefit the Business Intelligence and data management industry by providing pro bono exchange of information between vendors and independent analysts on new trends and technologies and to provide vendors with constructive feedback on their of...
Oct. 1, 2014 03:30 PM EDT Reads: 998
Software AG helps organizations transform into Digital Enterprises, so they can differentiate from competitors and better engage customers, partners and employees. Using the Software AG Suite, companies can close the gap between business and IT to create digital systems of differentiation that drive front-line agility. We offer four on-ramps to the Digital Enterprise: alignment through collaborative process analysis; transformation through portfolio management; agility through process automation and integration; and visibility through intelligent business operations and big data.
Sep. 30, 2014 10:30 AM EDT Reads: 1,575
There will be 50 billion Internet connected devices by 2020. Today, every manufacturer has a propriety protocol and an app. How do we securely integrate these "things" into our lives and businesses in a way that we can easily control and manage? Even better, how do we integrate these "things" so that they control and manage each other so our lives become more convenient or our businesses become more profitable and/or safe? We have heard that the best interface is no interface. In his session at Internet of @ThingsExpo, Chris Matthieu, Co-Founder & CTO at Octoblu, Inc., will discuss how these devices generate enough data to learn our behaviors and simplify/improve our lives. What if we could connect everything to everything? I'm not only talking about connecting things to things but also systems, cloud services, and people. Add in a little machine learning and artificial intelligence and now we have something interesting...
Sep. 29, 2014 06:45 AM EDT Reads: 1,913
Last week, while in San Francisco, I used the Uber app and service four times. All four experiences were great, although one of the drivers stopped for 30 seconds and then left as I was walking up to the car. He must have realized I was a blogger. None the less, the next car was just a minute away and I suffered no pain. In this article, my colleague, Ved Sen, Global Head, Advisory Services Social, Mobile and Sensors at Cognizant shares his experiences and insights.
Sep. 28, 2014 09:45 AM EDT Reads: 1,559
We are reaching the end of the beginning with WebRTC and real systems using this technology have begun to appear. One challenge that faces every WebRTC deployment (in some form or another) is identity management. For example, if you have an existing service – possibly built on a variety of different PaaS/SaaS offerings – and you want to add real-time communications you are faced with a challenge relating to user management, authentication, authorization, and validation. Service providers will want to use their existing identities, but these will have credentials already that are (hopefully) irreversibly encoded. In his session at Internet of @ThingsExpo, Peter Dunkley, Technical Director at Acision, will look at how this identity problem can be solved and discuss ways to use existing web identities for real-time communication.
Sep. 27, 2014 11:30 PM EDT Reads: 1,938
Can call centers hang up the phones for good? Intuitive Solutions did. WebRTC enabled this contact center provider to eliminate antiquated telephony and desktop phone infrastructure with a pure web-based solution, allowing them to expand beyond brick-and-mortar confines to a home-based agent model. It also ensured scalability and better service for customers, including MUY! Companies, one of the country's largest franchise restaurant companies with 232 Pizza Hut locations. This is one example of WebRTC adoption today, but the potential is limitless when powered by IoT. Attendees will learn real-world benefits of WebRTC and explore future possibilities, as WebRTC and IoT intersect to improve customer service.
Sep. 27, 2014 10:30 PM EDT Reads: 1,848
From telemedicine to smart cars, digital homes and industrial monitoring, the explosive growth of IoT has created exciting new business opportunities for real time calls and messaging. In his session at Internet of @ThingsExpo, Ivelin Ivanov, CEO and Co-Founder of Telestax, will share some of the new revenue sources that IoT created for Restcomm – the open source telephony platform from Telestax. Ivelin Ivanov is a technology entrepreneur who founded Mobicents, an Open Source VoIP Platform, to help create, deploy, and manage applications integrating voice, video and data. He is the co-founder of TeleStax, an Open Source Cloud Communications company that helps the shift from legacy IN/SS7 telco networks to IP-based cloud comms. An early investor in multiple start-ups, he still finds time to code for his companies and contribute to open source projects.
Sep. 27, 2014 10:30 PM EDT Reads: 2,313
The Internet of Things (IoT) promises to create new business models as significant as those that were inspired by the Internet and the smartphone 20 and 10 years ago. What business, social and practical implications will this phenomenon bring? That's the subject of "Monetizing the Internet of Things: Perspectives from the Front Lines," an e-book released today and available free of charge from Aria Systems, the leading innovator in recurring revenue management.
Sep. 27, 2014 09:45 PM EDT Reads: 2,534
The Internet of Things will put IT to its ultimate test by creating infinite new opportunities to digitize products and services, generate and analyze new data to improve customer satisfaction, and discover new ways to gain a competitive advantage across nearly every industry. In order to help corporate business units to capitalize on the rapidly evolving IoT opportunities, IT must stand up to a new set of challenges.
Sep. 27, 2014 08:45 PM EDT Reads: 2,406
There’s Big Data, then there’s really Big Data from the Internet of Things. IoT is evolving to include many data possibilities like new types of event, log and network data. The volumes are enormous, generating tens of billions of logs per day, which raise data challenges. Early IoT deployments are relying heavily on both the cloud and managed service providers to navigate these challenges. In her session at 6th Big Data Expo®, Hannah Smalltree, Director at Treasure Data, to discuss how IoT, Big Data and deployments are processing massive data volumes from wearables, utilities and other machines.
Sep. 27, 2014 01:00 PM EDT Reads: 2,076
P2P RTC will impact the landscape of communications, shifting from traditional telephony style communications models to OTT (Over-The-Top) cloud assisted & PaaS (Platform as a Service) communication services. The P2P shift will impact many areas of our lives, from mobile communication, human interactive web services, RTC and telephony infrastructure, user federation, security and privacy implications, business costs, and scalability. In his session at Internet of @ThingsExpo, Erik Lagerway, Co-founder of Hookflash, will walk through the shifting landscape of traditional telephone and voice services to the modern P2P RTC era of OTT cloud assisted services.
Sep. 26, 2014 11:45 PM EDT Reads: 1,600
While great strides have been made relative to the video aspects of remote collaboration, audio technology has basically stagnated. Typically all audio is mixed to a single monaural stream and emanates from a single point, such as a speakerphone or a speaker associated with a video monitor. This leads to confusion and lack of understanding among participants especially regarding who is actually speaking. Spatial teleconferencing introduces the concept of acoustic spatial separation between conference participants in three dimensional space. This has been shown to significantly improve comprehension and conference efficiency.
Sep. 26, 2014 10:45 PM EDT Reads: 1,521
The Internet of Things is tied together with a thin strand that is known as time. Coincidentally, at the core of nearly all data analytics is a timestamp. When working with time series data there are a few core principles that everyone should consider, especially across datasets where time is the common boundary. In his session at Internet of @ThingsExpo, Jim Scott, Director of Enterprise Strategy & Architecture at MapR Technologies, will discuss single-value, geo-spatial, and log time series data. By focusing on enterprise applications and the data center, he will use OpenTSDB as an example to explain some of these concepts including when to use different storage models.
Sep. 26, 2014 07:45 PM EDT Reads: 2,335
SYS-CON Events announced today that Gridstore™, the leader in software-defined storage (SDS) purpose-built for Windows Servers and Hyper-V, will exhibit at SYS-CON's 15th International Cloud Expo®, which will take place on November 4–6, 2014, at the Santa Clara Convention Center in Santa Clara, CA. Gridstore™ is the leader in software-defined storage purpose built for virtualization that is designed to accelerate applications in virtualized environments. Using its patented Server-Side Virtual Controller™ Technology (SVCT) to eliminate the I/O blender effect and accelerate applications Gridstore delivers vmOptimized™ Storage that self-optimizes to each application or VM across both virtual and physical environments. Leveraging a grid architecture, Gridstore delivers the first end-to-end storage QoS to ensure the most important App or VM performance is never compromised. The storage grid, that uses Gridstore’s performance optimized nodes or capacity optimized nodes, starts with as few a...
Sep. 26, 2014 06:15 PM EDT Reads: 1,713
The Transparent Cloud-computing Consortium (abbreviation: T-Cloud Consortium) will conduct research activities into changes in the computing model as a result of collaboration between "device" and "cloud" and the creation of new value and markets through organic data processing High speed and high quality networks, and dramatic improvements in computer processing capabilities, have greatly changed the nature of applications and made the storing and processing of data on the network commonplace. These technological reforms have not only changed computers and smartphones, but are also changing the data processing model for all information devices. In particular, in the area known as M2M (Machine-To-Machine), there are great expectations that information with a new type of value can be produced using a variety of devices and sensors saving/sharing data via the network and through large-scale cloud-type data processing. This consortium believes that attaching a huge number of devic...
Sep. 26, 2014 06:00 PM EDT Reads: 1,628