You can select the security protocols that Horizon Client can use. You can also specify the cipher control string.

About this task

  • In Horizon Client 3.0 through 3.4, TLSv1.0 and TLSv1.1 are enabled by default. The default cipher control string is "AES:!aNULL:@STRENGTH".

  • In Horizon Client 3.5, TLSv1.0, TLSv1.1, and TLSv1.2 are enabled by default. The default cipher control string is "!aNULL:kECDH+AES:ECDH+AES:RSA+AES:@STRENGTH".

  • In Horizon Client 4.0 and later, TLSv1.0 is disabled by default, TLSv1.1 and TLSv1.2 are enabled by default, and SSLv3 is removed. The default cipher control string is "!aNULL:kECDH+AES:ECDH+AES:RSA+AES:@STRENGTH".

Prerequisites

Verify the security protocol that the Connection Server instance can use. If you configure a security protocol for Horizon Client that is not enabled on the Connection Server instance to which the client connects, an SSL error occurs and the connection fails. For information about configuring the security protocols that are accepted by Connection Server instances, see the View Security document.

You should change the security protocols in Horizon Client only if your View administrator instructs you to do so, or if your Connection Server instance does not support the current settings.

Procedure

  1. Open the Settings screen.

    Option

    Action

    Horizon Client 3.0

    In your iOS Settings app, tap VMware View.

    Horizon Client 3.1 through 3.5

    In your iOS Settings app, tap Horizon.

    Horizon Client 4.0 and later

    Tap Settings at the bottom of the Horizon Client screen.

  2. Tap Advanced SSL Options.
  3. (Horizon Client 3.0 through 3.5) Make sure that the Reset to Default Settings option is set to off.
  4. To enable or disable a security protocol, tap the On or Off toggle next to the security protocol name.
  5. To change the cipher control string, replace the default string.
  6. (Optional) : If you need to revert to the default settings, tap to toggle the Reset to Default Settings option to on (Horizon Client 3.0 through 3.5) or tap Reset in the upper right corner of the screen (Horizon Client 4.0 and later).

Results

Your changes take effect the next time you connect to the server.