You can conceal
all communications to and from machines in any Delivery Group using the
SecureICA feature, which encrypts the ICA protocol.
through public networks, Citrix recommend using additional encryption methods
besides SecureICA. Citrix recommends using SSL/TLS encryption for traversing
public networks. Also, SecureICA does not check data integrity.
By default, XenDesktop disables SecureICA. If you enable it, the
default encryption level is 128-bit. You can configure the level using the
XenDesktop SDK. See the XenDesktop SDK documentation for detailed information.