An administrator has View installed in a LAN environment with tunneling disabled. When users connect from the View Client on a Windows 7 laptop, they can authenticate and select a pool, but receive…

An administrator has View installed in a LAN environment with tunneling disabled. When users connect from the View Client on a Windows 7 laptop, they can authenticate and select a pool, but receive a black screen when connecting with PCoIP. After 10 seconds, their session automatically disconnects. RDP users are not affected. What port is likely being blocked by a firewall to cause this issue?