You can download the latest Linux Receiver client at:
You should be able to install the 32-bit client on a 64-bit machine but this has not been tested.
Remember that you MAY need to install the Thawte certs in your preferred browser (firefox or chrome.)
For the nativc Citrix client, the CA certs should be copied to /opt/Citrix/ICAClient/keystore/cacerts directory. It is UNLIKELY that the citrix client has these installed by default.
If you are using the java client, the CA certificates need to be installed in the java keystore.
You should have Citrix receiver 11.8.2 or later installed.
If you are using Firefox 33 you may need to adjust the plugin settings.
tools -> addons -> plugins
Citrix receiver plugin 11.8.2 shd be installed. Change from “Ask to Activate” to “always activate”