How to Enable Single Sign-On for Windows Server 2008 Terminal Services


To increase security in your terminal services surroundings, you ought to think about using Single Sign-On (SSO) technology. As a result of the complexness of IT systems and network environments, several firms suffer from supporting multiple authentication strategies across multiple (and generally disparate) systems. Distributed environments cause several challenges. Since distributed environments imply freelance security domains, it’s vital to look at SSO as how to form one single security domain (adding all secondary domains) for easy access and traceableness. The goal is produce to make to form} the looks of a centralized system if you can’t create one instance within the initial place. Several users generally got to sign-on to multiple systems after they solely ought to check in just one occasion with one set of credentials mistreatment SSO. SSO works to assist to alleviate these problems.

What is SSO? SSO is outlined as a method or resolution which will produce one ‘authentication’ of a user valid to any or all alternative taking part systems. SSO can enable a user to attest and have authorization to allow or access all computers and/or systems wherever he/she has access permission while not the requirement to enter multiple passwords. the sole main disadvantage to the present style is that once mistreatment SSO technology, though you produce associate degree design that’s ‘user friendly’, the problem you’ll face is that each one users, hosts and applications should ‘trust’ a similar authentication mechanism. If this authentication mechanism is secure, and you’re testing it properly, then you ought to not face any problems mistreatment SSO technology.

When operating with Terminal Services, SSO are often terribly fascinating to assist aid the complexness of users attempting to connect to a system and having to go online anytime they plan to connect with a system that needs authentication. With Windows Server 2008, SSO are often enforced with the Terminal Services Role terribly simply.

Using SSO with Terminal Services:

Single Sign-On (SSO) is associate degree authentication technique that enables users with a site account to go online once. they are doing this by mistreatment pre-established credentials (a countersign or sensible card) to access systems while not being asked for credentials multiple times. To implement single sign-on practicality in Terminal Services, make sure that you meet (and for production systems – exceed) the minimum needs. the essential needs required to implement SSO are:

  • You can solely use single sign-on for remote connections from a laptop running Windows view or Windows Server 2008 to a Windows Server 2008 Terminal Server.
  • You must make sure that the user accounts that are used for work on to the Terminal Server have acceptable rights to go online to each the Terminal Server and also the Windows Vista/2008 consumer laptop.
  • Your consumer laptop and Terminal Server should be joined to a site. during this example, during this article we tend to are mistreatment the TESTDOM domain.

Understanding what the essential needs ar, a lot of specific needs for fixing SSO, is as follows:


  • Windows Server 2008 Terminal Server with TS Server Role and TS Licensing Server Role enabled
  • Windows Server 2008 Domain Controller (Active Directory)
    Proper Hardware needs

Although you’ll build a DC a Terminal Server, it’s suggested that you simply split the roles and use separate servers supported the load that’s expected. Obviously, whenever implementing a production system, you may wish to form certain that you simply recognize what your application/traffic flows ar and what load your users and also the application puts on your network moreover because the individual servers connected to that.


  • Windows view (or Windows Server 2008 used as a consumer system)
  • Remote Desktop consumer (RDC) with Network Level Authentication (NLA) Support. NLA support is simply offered with RDC half-dozen.0 and with view or 2008.
  • Proper Hardware needs (exceed as needed)

A layout of the check science laboratory accustomed simulates this exercise.

To tack the suggested settings for your Terminal Server, complete the subsequent steps:

Configure authentication on the Terminal Server, this will be finished AD, or regionally on the server you wish access to.

Configure the pc running Windows view to permit default credentials to be used for work on to the desired Terminal Server(s) on your network.

You need body privileges on the Terminal Server you’re configuring.

Now that you simply recognize what you wish, allow us to begin configuring SSO with Windows Server 2008 Terminal Services.

Configure Authentication on a Terminal Server:

First, verify you have got a operating Terminal Server. Check the Server Manager as seen in Figure a pair of to verify that you simply have the right Terminal Services roles put in and operational. Remember, you ought to have (at minimum), the Terminal Services Role and also the Licensing Server Role put in and prepared to tack SSO.

Next, we’ll tack Single Sign-On (SSO) on the Terminal Server by gap Terminal Services Configuration. Move to begin => body Tools => Terminal Services, then click Terminal Services Configuration.

Once you open the Terminal Services Configuration console, realize the Connections pane. You should, at minimum, have the default affiliation in situ that ought to be RDP-Tcp. To tack this (or the other affiliation) right-click the acceptable connection then click Properties.

Once you open the Properties window, on the final tab as seen in Figure four, you’ll verify that the safety Layer worth is ready to either talk over or SSL (TLS one.0). Negotiation can enable the system to ‘negotiate’ with a consumer what variety of Security Layer is required.

Once you end choosing the safety Layer, click on the Log in Settings Tab as seen in Figure half-dozen.

On the go online Settings tab, make sure that the perpetually prompt for countersign check box isn’t hand-picked or checked, then click okay to shut the RDP-Tcp Properties window.

Now, you have got designed authentication, next we’ll tack the default written document usage to be used with SSO.

Allow Default written document Usage for Single Sign-On (SSO):

Now that we’ve got authentication designed, we’d like to complete the method. To do this, you wish to travel to the consumer system (Vista, or 2008) and tack the native cluster Policy Editor. On your consumer laptop open the native cluster Policy Editor. To open native cluster Policy Editor, move to begin, and within the begin Search box, kind gpedit.msc then press ENTER. this can launch the native cluster Policy Editor during a Microsoft Management Console (MMC).

In the Editor, look within the left pane and expand laptop Configuration => body Templates => System => then click Credentials Delegation. Double-click the authorization Default Credentials setting to open it

Next, within the Properties window on the Setting tab, choose Enabled, then choose Show. Within the Show Contents window, click boost add servers to the list as seen in Figure nine. Within the Add Item window, kind the prefix terms/ followed by the name of the Terminal Server you may be connecting too. During this example we’d specify it as:


Once you have got supplementary the server name, click okay to shut the Add Item window. Click OK a number of times till you’re back within the native cluster Policy Editor and shut the MMC.

Now you ought to be all able to use SSO with Windows Server 2008 and 2008 Terminal Services.


In this article we tend to line the basic ideas of Single Sign-On (SSO) technology, the way to use it with Windows Server 2008 Terminal Services and the way to tack your view or 2008 primarily based purchasers.

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