Installation and Setup Guide

Configuring Advanced TLS/SSL Options
You can select the security protocols and cryptographic algorithms that are used to encrypt
communications between Horizon Client and servers, or between Horizon Client and the agent in the
remote desktop.
These options are also used to encrypt the USB channel (communication between the USB service
daemon and the agent).
With the default setting, cipher suites use 128- or 256-bit AES, remove anonymous DH algorithms, and
then sort the current cipher list in order of encryption algorithm key length.
By default, TLS v1.0, TLS v1.1, and TLS v1.2 are enabled. SSL v2.0 and v3.0 are not supported.
Note If TLS v1.0 and RC4 are disabled, USB redirection does not work when users are connected to
Windows XP desktops. Be aware of the security risk if you choose to make this feature work by enabling
TLS v1.0 and RC4.
If you configure a security protocol for Horizon Client that is not enabled on the server to which the client
connects, a TLS/SSL error occurs and the connection fails.
Important At least one of the protocols that you enable in Horizon Client must also be enabled on the
remote desktop. Otherwise, USB devices cannot be redirected to the remote desktop.
On the client system, you can use either configuration file properties or command-line options for these
settings:
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To use configuration file properties, use the view.sslProtocolString and view.sslCipherString
properties.
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To use command-line configuration options, use the --sslProtocolString and
--sslCipherString options.
For more information, see Using the Horizon Client Command-Line Interface and Configuration Files and
look up the property and option names in the table in Horizon Client Configuration Settings and
Command-Line Options.
Configuring Specific Keys and Key Combinations to Send
to the Local System
Starting with Horizon Client, if you use PCoIP, or, starting with Horizon Client 4.0, it you use VMware Blast
or PCoIP, you can create a view-keycombos-config file to specify which individual keys and key
combinations should not be forwarded to the remote desktop.
You might prefer to have some keys or key combinations handled by your local client system when
working in a remote desktop. For example, you might want to use a particular key combination to start the
screen saver on your client computer. You can create a file located at /etc/vmware/view-keycombos-
config and specify the key combinations and individual keys.
VMware Horizon Client for Linux Installation and Setup Guide
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