Verify if the AD FS 3.0 MMC plugin looks like the following screen shot: If it appears different then you have to install AD FS 3.0. Open AD FS 3.0 Service Certificates and then configure Service Communication, Token-Decrypting, and Tokensigning certificates. If you need online forms for generating leads, distributing surveys, collecting payments and more, JotForm is for you. Learn more about how we can help at JotForm.com. The -e option will check to see if the file exists, returning 0 if true. The -z option will check to see if the file is zero length, returning 0 if true. The -d option will check to see if the path is directory, returning 0 if true. Example: hdfs dfs -test -e filename. Note that the reason of having two-step create/append is for preventing clients to send out data before the redirect. This issue is addressed by the 'Expect: 100-continue' header in HTTP/1.1; see RFC 2616, Section 8.2.3. 19.0 ESD8451N2T5G Clamping Voltage TLP (Note 2). ESD8451MUT5G CV Characteristics Figure 6. ESD8451N2T5G CV Characteristics. USB 2.0 LS/FS, USB 2.0 HS.
Applicable Products
- Citrix ADC
Objective
This article describes how to set up Security Assertion Markup Language (SAML) Active Directory Federation Services (AD FS) that is configuring NetScaler SAML to work with Microsoft ADFS 3.0 IDP.
Note: This article is not for replacing AD FS Proxy with NetScaler. It is intended to be used when SAML is configured in front of the NetScaler appliance.
Instructions
To set up SAML AD FS, complete the following procedure:
- Open the following links and verify if the AD FS is working:
https://<adfs_fqdn>/adfs/fs/federationserverservice.asmx
https://<adfs_fqdn >/FederationMetadata/2007-06/FederationMetadata.xml - Verify if the AD FS 3.0 MMC plugin looks like the following screen shot:
If it appears different then you have to install AD FS 3.0. - Open AD FS 3.0 > Service > Certificates and then configure Service Communication, Token-Decrypting, and Token_signing certificates.
- Select the appropriate certificates by clicking on 'Certificates' option that can be used for SAML communication. This is the certificate that NetScaler appliance will use when verifying the signed SAML Response from IDP.
- Open AD FS 3.0 > Trust Relation Ships > Relaying party Trusts > Add Relaying Party Trust and then configure Relaying Party Trust.
- Select the Import Dataabout the relaying party published online or local network option.
- Specify the NetScaler Metadata file location as https://vserver_fqdn>/ns_metadata.xml. Note: Metadata file is not created by default. NetScaler administrator has to create the metadata file (ns_metadata.xml) and copy the same at /netscaler/ns_gui/vpn folder by specifying the location as https://<vpnvserver>/ns_metdata.xml.ORInstead of copying to NetScaler and specifying the URL location, the metadata can be copied to a shared location and accessed.
The following screen shot shows a sample metadata file.Update the following text in the metadata file for the corresponding environment:
Note: The following is the metadata file in text - https://citrix.sharefile.com/d/sa0c465afb9142ff9 and here is an example that has been filled out - https://citrix.sharefile.com/d/see1f982434a4a7cb. Some of the screen shots will reflect the configuration from the example.- IDPLoginPage is the Redirect url
- KeyName is the signingCertname
- <lbvs.fqdn.com>/cgi/samlauth is the Login URL or authentication end point
- lbvserver.fqdn.com is the common name for the certificate of the load balancing virtual server on a NetScaler appliance
- Ignore the following error message.
- Select the Authorization rules, as shown in the following screen shot:
- Verify the Relaying Party data before you complete:Encryption and Signature: NetScaler virtual server Server CertificateEnd Points: https://<vserver_fqdn>/cgi/samlauth
- Complete the Relaying Party Trust Wizard.
- Select the new Relaying Party Trust and edit the Properties.
- Select Advanced.
- Select the Secure hash algorithm as SHA-1, as shown in the following screen shot:Note: An Enhancement #440382 raised to support SHA256 hashing algorithm. This is available in version 10.5 build 55.x or above.
- Select the Encryption tab, remove all Certificates, if there are any listed.
Note: Encrypted Assertions are currently not supported. - Select Endpoints and make sure it looks similar to the following screen shot:
- Select Identifiers, and make sure it looks similar to the following screen shot:
- Select Signature and make sure it looks similar to the following screen shot:
- Right-click the Relaying Party trust and select Edit Claim Rules.
- Select Transform Rule > Add Claim Rule > Claim Rule Template> Send LDAP Attributes as Claims.
- Type a name for the rule.
- Select Active Directory for Attribute Store.
- Select the LDAP attribute: <AD parameters>.
- Select the Out Going Claim Rule as Name ID.
Note: Currently only Out Going Claim Rule: Name ID is supported. - For the second rule, select Send claims using a custom rule.
- Specify a URL to redirect the network traffic when the user logs out by creating a custom claim rule which sends an additional logoutURL attribute.
The custom rule is as follows:
Configuration on a NetScaler Appliance
To configure the NetScaler appliance, complete the following procedure:
- Download AD FS signing certificate.
- Run the following command to add a Certificate key:
add ssl certKey adfs-signing -cert adfs-signing.cer - Run the following command to add an SAML action:
add authentication samlAction samladfs -samlIdPCertName <ipd certificate> -samlSigningCertName <sp certificate> -samlRedirectUrl 'https://<adfs_fqdn >/adfs/ls/' -samlUserField 'Name ID' -samlIssuerName <issuername/relaying party identifier>add authentication samlPolicy saml_true ns_true samladfsex: add authentication samlAction samladfs -samlIdPCertName adfs.coolidge.netweb -samlSigningCertName lbiis.coolidge.net -samlRedirectUrl 'https://adfs.coolidge.net/adfs/ls/FormsSignIn.aspx' -samlUserField 'Name ID' -samlIssuerName 'https://lbiis.coolidge.net'- sp certificate is the name of the certificate key pair added as a SAML signing certificate.
- First occurrence of <certname> refers to the certificate name of SAML IDP certificate and second occurrence refers to the SAML signing certificate.
- samlIDPCertname specifies the certificate the NetScaler appliance uses when verifying the signed SAML Response from IDP. It will be a public Signing certificate of IDP.
- samlSigningCert specifies the certificate the NetScaler appliance uses to sign the SAML Request going to IDP. Therefore, the administrator has to configure the same certificate in the NetScaler Metadata file. Most IDPs extract Service Provider information from the metadata file including the certificate. If IDP supports the manual configuration, metadata file is not required. The administrator has to configure this certificate as Service Provider certificate.
- Add a aaa-tm server:
add authentication vserver aaa.coolidge.net SSL 192.168.1.32 443 - Bind the SAML policy:
bind authentication vserver aaa.coolidge.net -policy saml_true -priority 100 - Add a load balancing virtual server:
add lb vserver lbvserver_iis_ssl SSL 192.168.1.31 443 -persistenceType NONE -cltTimeout 180 -AuthenticationHost 'https://aaa.coolidge.net' -Authentication ON -authnVsName aaa.coolidge.net - Add DNS names:
192.168.1.32 > aaa.coolidge.net
192.168.1.31 > lbiis.coolidge.net - The following NetScaler configuration should also be completed:
Add SSL certificates
Add services
Bind services
Additional Resources
To configure AAA virtual server, refer to Citrix Documentation - Configuring the Authentication Virtual Server.
AD FS 3.0 Installation Document: - AD FS 3.0 Installation Document
The following table describes the parameters used to create an SAML action.
add authentication SAMLAction <name> -samlIdPCertName <certname> -samlRedirectUrl <IDP URL> -samlUsernameField –samlSigningCert <certname> -samlIssuerName <issuer_name> -samlRejectUnsignedAssertion <TRUE/FALSE>
add authentication SAMLAction <name> -samlIdPCertName <certname> -samlRedirectUrl <IDP URL> -samlUsernameField –samlSigningCert <certname> -samlIssuerName <issuer_name> -samlRejectUnsignedAssertion <TRUE/FALSE>
Gopanel 2 2 0 2. Parameter | Description |
certname | It is the public key corresponding to the private key at the Identity Provider (IdP). It is required for decrypting or verifying the SAML assertion. This can come in the assertion as keyInfo, but is not currently used. Add this information to the NetScaler appliance using the add certkey command. |
Redirect url | It is the url of the authentication end point (IdP). Unauthenticated users are redirected to this URL. |
Username field | It can be used to extract the username if the IdP sends the username in other than <NameIdentifier> tag of <Subject> tag. In most scenarios, this need not be configured. Depending on the use cases, this can be removed. |
signingCertname | It is the certificate key of AAA/Gateway virtual server that is used to sign the authentication request to the IdP. If signingCertName is not configured, then assertion is either sent unsigned or authentication is rejected as per the samlRejectUnsignedAssertion parameter. |
samlIssuerName | It is the string to be used in sending the authentication request. Every IdP expects a unique name in the issuer field to signify the authority which sent this assertion. A few IdPs ignore this but a few rely on this field to search the metadata corresponding to this Service Provider. |
samlRejectUnsignedAssertion | It is a knob to accept or reject unsigned assertions from the IdP. This parameter gives flexibility to the administrator or user to verify the connectivity or basic functioning of the Service Provider and IdP. This knob is also used when sending the authentication request out. If signingCert is not configured and if this knob is false, the unsigned authentication request is sent. Otherwise, the SAML authentications are rejected and fall back to forms-based authentication. |
Errors and Debugging
Places to look for information:
NetScaler
Live tracing:
nsconmsg -d current -g saml
cat /tmp/aaad.debug
tail -f /var/log/ns.log
nsconmsg -d current -g saml
cat /tmp/aaad.debug
tail -f /var/log/ns.log
Historical:
nsconmsg -d stats -g saml
cat /var/log/ns.log
nsconmsg -d stats -g saml
cat /var/log/ns.log
Windows
ADFS 3.0 error log:
w3.woodsnetworks.com/index.php/2013/02/adfs-2-0-error-after-successful-login/
Issuername / identifier mismatch:
ID4037: The key needed to verify the signature could not be resolved from the following security key identifier 'SecurityKeyIdentifier
w3.woodsnetworks.com/index.php/2013/02/adfs-2-0-error-after-successful-login/
Issuername / identifier mismatch:
ID4037: The key needed to verify the signature could not be resolved from the following security key identifier 'SecurityKeyIdentifier
Incorrect IDP certificate configured on NetScaler
Browser error:
SAML Assertion verification failed; Please contact your administrator
/var/log/ns.log error:
Feb 12 15:07:07 <local0.err> 192.168.1.65 02/12/2015:14:07:07 GMT ns 0-PPE-0 : AAATM Message 1438 0 : 'Error while trying to verify the signature'
Feb 12 15:07:07 <local0.err> 192.168.1.65 02/12/2015:14:07:07 GMT ns 0-PPE-0 : AAATM Message 1439 0 : 'Verification of SAML assertion resulted in failure 917511'
-->SAML Assertion verification failed; Please contact your administrator
/var/log/ns.log error:
Feb 12 15:07:07 <local0.err> 192.168.1.65 02/12/2015:14:07:07 GMT ns 0-PPE-0 : AAATM Message 1438 0 : 'Error while trying to verify the signature'
Feb 12 15:07:07 <local0.err> 192.168.1.65 02/12/2015:14:07:07 GMT ns 0-PPE-0 : AAATM Message 1439 0 : 'Verification of SAML assertion resulted in failure 917511'
Note
Office 365 ProPlus is being renamed to Microsoft 365 Apps for enterprise. For more information about this change, read this blog post.
Important
This article contains information that shows you how to help lower security settings or how to turn off security features on a computer. You can make these changes to work around a specific problem. Before you make these changes, we recommend that you evaluate the risks that are associated with implementing this workaround in your particular environment. If you implement this workaround, take any appropriate additional steps to help protect the computer.
Problem
A federated user is repeatedly prompted for credentials when the user tries to authenticate to the Active Directory Federation Services (AD FS) service endpoint during sign-in to a Microsoft cloud service such as Office 365, Microsoft Azure, or Microsoft Intune. When the user cancels, the user receives the Access Denied error message.
Cause
The symptom indicates an issue with Windows Integrated authentication with AD FS. This issue can occur if one or more of the following conditions are true:
- An incorrect user name or password was used.
- Internet Information Services (IIS) authentication settings are set up incorrectly in AD FS.
- The service principal name (SPN) that's associated with the service account that's used to run the AD FS federation server farm is lost or corrupted.NoteThis occurs only when AD FS is implemented as a federation server farm and not implemented in a stand-alone configuration.
- One or more of the following are identified by Extended Protection for Authentication as a source of a man-in-the-middle attack:
- Some third-party Internet browsers
- The corporate network firewall, network load balancer, or other networking device is publishing the AD FS Federation Service to the Internet in such a way that IP payload data may potentially be rewritten. This possibly includes the following kinds of data:
- Secure Sockets Layer (SSL) bridging
- SSL offloading
- Stateful packet filteringFor more information, see the following Microsoft Knowledge Base article:2510193 Supported scenarios for using AD FS to set up single sign-on in Office 365, Azure, or Intune
- A monitoring or SSL decryption application is installed or is active on the client computer
- Domain Name System (DNS) resolution of the AD FS service endpoint was performed through CNAME record lookup instead of through an A record lookup.
- Windows Internet Explorer isn't configured to pass Windows Integrated authentication to the AD FS server.
Before you start troubleshooting
Check that the user name and password are not the cause of the issue.
- Make sure that the correct user name is used and is in user principal name (UPN) format. For example, [email protected].
- Make sure that the correct password is used. To double-check that the correct password is used, you may have to reset the user password. For more information, see the following Microsoft TechNet article:
- Make sure that the account isn't locked out, expired, or used outside designated logon hours. For more information, see the following Microsoft TechNet article:Managing Users
Verify the cause
To check that Kerberos problems are causing the issue, temporarily bypass Kerberos authentication by enabling forms-based authentication on the AD FS federation server farm. To do this, follow these steps:
Step 1: Edit the web.config file on each server in the AD FS federation server farm
- In Windows Explorer, locate the C:inetpubadfsls folder, and then make a backup copy of the web.config file.
- Click Start, click All Programs, click Accessories, right-click Notepad, and then click Run as administrator.
- On the File menu, click Open. In the File Name box, type C:inetpubadfslsweb.config, and then click Open.
- In the web.config file, follow these steps:
- Locate the line that contains <authentication mode>, and then change it to <authentication mode='Forms'/>.
- Locate the section that begins with <localAuthenticationTypes>, and then change the section so that the <add name='Forms'> entry is listed first, as follows:
- On the File menu, click Save.
- At an elevated command prompt, restart IIS by using the iisresetcommand.
Step 2: Test AD FS functionality
- On a client computer that's connected and authenticated to the on-premises AD DS environment, sign in to the cloud service portal.Instead of a seamless authentication experience, a forms-based sign-in should be experienced. If sign-in is successful by using forms-based authentication, this confirms that a problem with Kerberos exists in the AD FS Federation Service.
- Revert the configuration of each server in the AD FS federation server farm to the previous authentication settings before you follow the steps in the 'Resolution' section. To revert the configuration of each server in the AD FS federation server farm, follow these steps:
- In Windows Explorer, locate the C:inetpubadfsls folder, and then delete the web.config file.
- Move the backup of the web.config file that you created in the 'Step 1: Edit the web.config file on each server in the AD FS federation server farm' section to the C:inetpubadfsls folder.
- At an elevated command prompt, restart IIS by using the iisresetcommand.
- Check that the AD FS authentication behavior reverts to the original issue.
Solution
To resolve the Kerberos issue that limits AD FS authentication, use one or more of the following methods, as appropriate for the situation.
Resolution 1: Reset AD FS authentication settings to the default values
If AD FS IIS authentication settings are incorrect, or IIS authentication settings for AD FS Federation Services and Proxy Services don't match, one solution is to reset all IIS authentication settings to the default AD FS settings.
The default authentication settings are listed in the following table.
Virtual application | Authentication level(s) |
---|---|
Default Web Site/adfs | Anonymous authentication |
Default Web Site/adfs/ls | Anonymous authentication, Windows authentication |
On each AD FS federation server and on each AD FS federation server proxy, use the information in the following Microsoft TechNet article to reset the AD FS IIS virtual applications to the default authentication settings:
For more information about how to resolve this error, see the following Microsoft Knowledge Base articles:
- 907273 Troubleshooting HTTP 401 errors in IIS
- 871179 You receive an 'HTTP Error 401.1 - Unauthorized: Access is denied due to invalid credentials' error message when you try to access a Web site that is part of an IIS 6.0 application pool
Resolution 2: Correct the AD FS federation server farm SPN
Note
Try this resolution only when AD FS is implemented as a federation server farm. Do not try this resolution in an AD FS stand-alone configuration.
To resolve the issue if the SPN for the AD FS service is lost or corrupted on the AD FS service account, follow these steps on one server in the AD FS federation server farm:
- Open the Services management snap-in. To do this, click Start, click All Programs, click Administrative Tools, and then click Services.
- Double-click AD FS (2.0) Windows Service.
- On the Log On tab, note the service account that's displayed in This Account.
- Click Start, click All Programs, click Accessories, right-click Command Prompt, and then click Run as administrator.
- Type the following command, and then press Enter.NoteIn this command, <AD FS service name> represents the fully qualified domain name (FQDN) service name of the AD FS service endpoint. It does not represent the Windows host name of the AD FS server.
- If more than one entry is returned for the command, and the result is associated with a user account other than the one that was noted in step 3, remove that association. To do this, run the following command:
- If more than one entry is returned for the command, and the SPN uses the same name as the computer name of the AD FS server in Windows, the federation endpoint name for AD FS is incorrect. AD FS has to be implemented again. The FQDN of the AD FS federation server farm must not be identical to the Windows host name of an existing server.
- If the SPN does not already exist, run the following command:NoteIn this command, <username of service account> represents the user name that was noted in step 3.
- After these steps are performed on all servers in the AD FS federation server farm, right-click AD FS (2.0) Windows Service in the Services management snap-in, and then click Restart.
Resolution 3: Resolve Extended Protection for Authentication concerns
Parallels desktop business edition multilingual11 2 1 download free. To resolve the issue if Extended Protection for Authentication prevents successful authentication, use one of the following recommended methods:
- Method 1: Use Windows Internet Explorer 8 (or a later version of the program) to sign in.
- Method 2: Publish AD FS services to the Internet in such a way that SSL bridging, SSL offloading, or stateful packet filtering don't rewrite IP payload data. The best-practice recommendation for this purpose is to use an AD FS Proxy Server.
- Method 3: Close or disable monitoring or SSL-decrypting applications.
If you can't use any of these methods, to work around this issue, Extended Protection for Authentication can be disabled for passive and active clients.
Workaround: Disable Extended Protection for Authentication
Warning
We do not recommend that you use this procedure as a long-term solution. Disabling Extended Protection for Authentication weakens the AD FS service security profile by not detecting certain man-in-the-middle attacks on Integrated Windows Authentication endpoints.
Note
When this workaround is applied for third-party application functionality, you should also uninstall hotfixes on the client operating system for Extended Protection for Authentication.
For passive clients
To disable Extended Protection for Authentication for passive clients, perform the following procedure for the following IIS virtual applications on all servers in the AD FS federation server farm:
- Default Web Site/adfs
- Default Web Site/adfs/ls
To do this, follow these steps:
- Open IIS Manager and navigate to the level that you want to manage. For information about opening IIS Manager, see Open IIS Manager (IIS 7).
- In Features View, double-click Authentication.
- On the Authentication page, select Windows Authentication.
- In the Actions pane, click Advanced Settings.
- When the Advanced Settings dialog box appears, select Off from the Extended Protection drop-down menu.
For active clients
To disable Extended Protection for Authentication for active clients, perform the following procedure on the primary AD FS server:
- Open Windows PowerShell.
- Run the following command to load the Windows PowerShell for AD FS snap-in:
- Run the following command to disable Extended Protection for Authentication:
Re-enable Extended Protection for Authentication
For passive clients
To re-enable Extended Protection for Authentication for passive clients, perform the following procedure for the following IIS virtual applications on all servers in the AD FS federation server farm:
- Default Web Site/adfs
- Default Web Site/adfs/ls
To do this, follow these steps:
- Open IIS Manager and navigate to the level that you want to manage. For information about opening IIS Manager, see Open IIS Manager (IIS 7).
- In Features View, double-click Authentication.
- On the Authentication page, select Windows Authentication.
- In the Actions pane, click Advanced Settings.
- When the Advanced Settings dialog box appears, select Accept from the Extended Protection drop-down menu.
For active clients
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To re-enable Extended Protection for Authentication for active clients, perform the following procedure on the primary AD FS server:
- Open Windows PowerShell.
- Run the following command to load the Windows PowerShell for AD FS snap-in:
- Run the following command to enable Extended Protection for Authentication:
Resolution 4: Replace CNAME records with A records for AD FS
Use DNS management tools to replace each DNS Alias (CNAME) record that's used for the federation service with a DNS address (A) record. Also, check or consider corporate DNS settings when a split-brain DNS configuration is implemented. For more information about how to manage DNS records, seeManaging DNS Records.
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Resolution 5: Set up Internet Explorer as an AD FS client for single sign-on (SSO)
For more information about how to set up Internet Explorer for AD FS access, see A federated user is prompted unexpectedly to enter work or school account credentials.
More information
To help protect a network, AD FS uses Extended Protection for Authentication. Extended Protection for Authentication can help prevent man-in-the-middle attacks in which an attacker intercepts a client's credentials and forwards them to a server. Protection against such attacks is made possible by using Channel Binding Works (CBT). CBT can be required, allowed, or not required by the server when communications are established with clients.
The ExtendedProtectionTokenCheck AD FS setting specifies the level of extended protection for authentication that's supported by the federation server. These are the available values for this setting:
- Require: The server is fully hardened. Extended protection is enforced.
- Allow: This is the default setting. The server is partly hardened. Extended protection is enforced for involved systems that are changed to support this feature.
- None: The server is vulnerable. Extended protection isn't enforced.
The following tables describe how authentication operates for three operating systems and browsers, depending on the different Extended Protection options that are available on AD FS with IIS.
Note
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Windows client operating systems must have specific updates that are installed to effectively use Extended Protection features. By default, the features are enabled in AD FS.
By default, Windows 7 includes the appropriate binaries to use Extended Protection.
Windows 7 (or appropriately updated versions of Windows Vista or of Windows XP)
Setting | Require | Allow (the default) | None |
---|---|---|---|
Windows Communication Foundation (WCF) Client (All endpoints) | Works | Works | Works |
Internet Explorer 8 and later versions | Works | Works | Works |
Firefox 3.6 | Fails | Fails | Works |
Safari 4.0.4 | Fails | Fails | Works |
Windows Vista without appropriate updates
Setting | Require | Allow (the default) | None |
---|---|---|---|
WCF Client (All endpoints) | Fails | Works | Works |
Internet Explorer 8 and later versions | Works | Works | Works |
Firefox 3.6 | Fails | Works | Works |
Safari 4.0.4 | Fails | Works | Works |
Windows XP without appropriate updates
Setting | Require | Allow (the default) | None |
---|---|---|---|
Internet Explorer 8 and later versions | Works | Works | Works |
Firefox 3.6 | Fails | Works | Works |
Safari 4.0.4 | Fails | Works | Works |
For more information about Extended Protection for Authentication, see the following Microsoft resource:
For more information about the Set-ADFSProperties cmdlet, go to the following Microsoft website:
Still need help? Go to Microsoft Community or the Azure Active Directory Forums website.
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The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.