This approach means data leakage protection and other security controls can be applied according to application-based policies, officials explained.
"Websense is committed to leading the way in product innovation to secure and enable software defined networks," said John McCormack, president, Websense.
"Our plans with Citrix demonstrate that our unique security technology is flexible, agile and able to secure the virtual datacentre fabric to protect organisations from the latest advanced threats and data loss."
Other features supported by the Data Security Gateway include web security, email security and mobile security, with unified security intelligence.
"We've built the industry's first open platform that unifies L4-L7 network services into a seamless application control layer.
"We are happy to partner with Websense to bring the power of integrated data leakage protection and advanced security to the SDX platform to address existing and emerging data privacy imperatives in enterprise IT."