Enlightened Data Transport (EDT).
EDT improves HDX/ICA performance across WAN links, Internet, etc. In 7.12, EDT was Tech Preview. In 7.13 and above, EDT is officially supported..
EDT has several requirements:
· UDP 1494 and UDP 2598 must be opened to every VDA, including from the NetScaler SNIP, if you’re using NetScaler Gateway.
· VDA 7.13 or newer
· Receiver for Windows must be 4.7 or newer.
· Receiver for Mac must be 12.5 or newer.
· StoreFront must be 3.9 or newer.
NetScaler Gateway 11.1 build 51 and newer supports EDT (DTLS). The following NetScaler features are not supported with EDT at this time:
· NetScaler SOCKS Proxy
· HDX Insight
· Gateway Multi-stream
· Gateway Double-hop, etc.
EDT is disabled by default, you need to set a policy to enable it, see this article: https://support.citrix.com/article/CTX220732.
Confirmation: Once you have it enabled, log into a session and run the command CTXSESSION –v, if you see the connection is going over UDP, you are good to go.