Hey, 

I'm setting up remote access to an HMI screen from an IT computer, this passes through a firewall, IT are asking what ports to open up for inbound and outbound traffic. The only port I can see to use is 5900, would this be the same port on the IT computer as well?

Rule Outbound

HMI IP and Port -------IT Destination IP and Port

Rule Inbound

IT Source IP and Port --------HMI Destination IP and Port

Hi FreshnFruity

I believe you think of SmartClient?

Start looking at this FAQ:

Which ports are used by WinCC Advanced, WinCC Runtime Advanced, WinCC Runtime Professional, Basic Panels, Comfort Panels, Panels and IPC?

Best regards