Hi Mike,
CA had partnered with Citrix NetScaler, built and designed a virtual appliance having the functionality of the CA Access Gateway specifically for the Citrix NetScaler SDX (10.5 MR3) platform; thereby allowing customers to consolidate gateway infrastructure via the SDX platform.
I wonder if this is what you looking for. The specifics may be found from link:
Citrix NetScaler - CA Technologies
Another one for F5 Networks
F5 Networks - CA Technologies
Hongxu