Citrix® XenApp™ Server version 6.5 provides secure remote access to internal corporate networks through native integration, and, with ESET Secure Authentication (ESA), through RADIUS (without requiring a separate RADIUS server to act as an intermediary).
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This article describes how to configure a Citrix® XenApp™ Server version 6.5 to authenticate users against an ESA Server. Before proceeding, verify that you've installed the RADIUS Server component of ESET Secure Authentication and can access the RADIUS service that allows external systems to authenticate users.
Before your Citrix® XenApp™ Server can use the ESA Server to authenticate users via RADIUS, it must be set up as a RADIUS client on the ESA Server. Next, your server running the ESA RADIUS service must be setup as a RADIUS Server on the Citrix® XenApp™ Server. Once these configurations have been specified, you can start logging into your Citrix® XenApp™ Server using ESA OTPs.
To allow the Citrix® XenApp™ Server to communicate with your ESA Server, you must configure the Citrix® XenApp™ server as a RADIUS client on your ESA Server:
Note that the check box next to Mobile Application is selected. The warning may be safely ignored, since Citrix® XenApp™ will be authenticating users' AD passwords.
ESA has now been configured to communicate with the Citrix® XenApp™ Server. You must now configure the Citrix® XenApp™ Server to communicate with the ESA Server. First, create a Shared Secret for the RADIUS protocol and then specify a Network Access Client IP address for RADIUS. Finally, eable two-factor authentication using the Citrix® XenApp™ Management Console.
The Citrix Web Interface stores your Shared Secret in a text file on the local file system. The location of this file is given by the RADIUS_SECRET_PATH configuration value in the web.config file (normally in inetpubwwwrootCitrixXenApp for sites hosted on IIS) or web.xml file (for sites hosted on Java application servers). The location given is relative to the conf folder for sites hosted on IIS and relative to the /WEB_INF directory for sites hosted on Java application servers.
To create the shared secret, follow the steps below:
The RADIUS protocol requires that access requests to RADIUS servers include the IP address for the RADIUS client (for example, the Web Interface). In order to enable RADIUS authentication, you must provide the IP address of the Web server.
To provide the IP address of the RADIUS client, follow the steps below:
You must now enable two-factor authentication in the Web Interface so that users can access and display their resource set. This should be done via the Authentication Methods task in the Citrix Web Interface Management console. In addition to enabling two-factor authentication, you can specify one or more RADIUS server addresses (and, optionally, ports), the load balancing or failover behaviour of the servers, and the response time-out.