Despite this appearance though, the underlying TCP/UDP connection is still between the client and the VDA. This second point is less obvious in the case of Citrix Workspace App for HTML5 because the published desktop or application displays within the browser frame and “appears” to be connected via the Storefront server.
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Additionally, when any Workspace App for Windows makes a connection to a VDA for either a published desktop or app, the underlying connection is made to the VDA and not the Storefront server as any kind of intermediate proxy.
As such the browser has the ability to enforce certain security parameters. As opposed to existing as a separate process, Citrix Workspace App for HTML5 operates within the frame and process space of the browser itself. In explaining the technical reason behind this it is important to understand the following two principles:ġ. When Workspace App for HTML5 is hosted on a https site (default and recommended), non SSL/TLS websocket connections are prohibited by browsers. Going forward, only secure (SSL/TLS) web socket connections can be made from Receiver for HTML5. Firefox allows it behind a flag (as explained earlier in this article), but it is not recommended. Chrome used to allow it behind a flag, but after the Chrome 44 update, this is no longer supported. Internet Explorer never allowed non SSL/TLS web socket connections from HTTPS websites. Important NoteĪs of version 9, Safari browser allows insecure web socket connections. WARNING! This option on Firefox affects the operation of entire Firefox, not just Citrix Receiver for HTML5. Note: This Firefox option might not be supported in Citrix Receiver for HTML5 future versions (v26 and later). If the preceding configuration is consistent with the security policy of your organization, an administrator can enable launching applications or desktop using the following steps:ĭouble-click and set the value to true. Use Mozilla Firefox only for Citrix Receiver for HTML5 (not for general website use).Įnforce a secure configuration for Firefox.Įnable the Firefox option. Note: This workaround has security implications consult the security specialist of your organization to consider the following configuration.Įnforce secure communications between Workspace App for HTML5 and applications or desktops (for example, using IPSec). There is a possible workaround for Mozilla Firefox browser.
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How To Secure ICA Connections in XenApp and XenDesktop 7.6 using SSL XenApp and XenDesktop 7.6 Security: FIPS 140-2 and SSL to VDA Read the following articles from the Citrix Blog for more information: Workspace App for HTML5 supports secure direct SSL/TLS connections with XenApp/XenDesktop 7.6 This would ensure connections work fine regardless of Virtual Apps or Desktops versions.ĭeploying SSL/TLS for each Virtual Delivery Agent (VDA) for direct connections. Connect via Citrix Gateway even for internal connections.
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