This article describes the steps to disable SSL protocols on citrix secure gateway
Complete the following procedure to disable SSLv3.0 protocol and enable TLSv1.0:
Open Citrix Secure Gateway console.
Run the Configuration Wizard.
Select Advanced configuration type.
Run through the wizard, selecting the appropriate certificate.
Select Transport Layer Security (TLSv1).
Continue through the configuration.
Restart the Citrix Secure Gateway service.