Here you find some of the basic communication ports used by Citrix Xenapp/XenDesktop:
| ICA Protocol | 1494 |
| ICA Protocol with Session Reliability | 2598 |
| IMA Communications | 2512 |
| Xenapp Advanced Console | 2513 |
| TCP Browsing | 1604(udp) |
| XML Service Port (shared with IIS) | t80 |
| SSL Communications | 443 |
| License Management Console Port | 8082 |
| License Port | 27000 |
| User Desktop Shadowing (Remote assistance) | 3389/135 |
| SQL Server (also relevant) | 1433 |
http://support.citrix.com/servlet/KbServlet/download/2389-102-654859/CitrixPorts_by_Port_1103.pdf For more ports, I refer to the Citrix website:
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