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PC-Duo Gateway Server Guide
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Gateway (G)-managed connections from Master (M) to Host (H)
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Firewall-friendly connections
When PC-Duo Master users need access to Hosts that are outside the domain, and/or
behind a firewall or NAT-device, normal peer-to-peer or Gateway-managed connections
will not work. In these cases, it is difficult to find and maintain a secure remote support
connection because of dynamic port assignments and other network challenges.
For these situations, PC-Duo Gateway builds special firewall-friendly connections to
these Hosts. When Hosts are outside the domain, the Hosts are programmed to
automatically initiate contact with the Gateway. The Gateway will use this initial contact to
build a firewall-friendly connection to the Host. In this way, the remote Host outside the
domain will appear just like any Host inside the domain.
Terminal services connections
PC-Duo provides server-side support (screen capture, input control, screen recording) for
session-based virtual desktops hosted by Terminal Services on Windows Server 2003 or
Window Server 2008 (now called "Remote Desktop Services"). Windows Server creates
and hosts the Terminal Services (TS) sessions like virtual machines. A presentation
technology using a display protocol such as RDP from Microsoft or ICA from Citrix is
typically used to remote the session display, as well as the keyboard and mouse input, to
and from an end user device (such as a thin client computer like a Wyse terminal).
PC-Duo allows technicians to capture (and if desired, record) the session presentation
information at the Windows Server before it is remoted to the end user device over the
RDP or ICA display protocol. PC-Duo is able to do this by injecting a Host instance into
each server-side TS session, which in turn captures and sends presentation information