Vector PC-Duo Technical Information download pdf (Page 21)

PC-Duo overview

directly to PC-Duo Gateway for recording and/or further transmission to a PC-Duo

Master.

Note: Because TS sessions are captured at the Windows Server (and not at the end user

device), PC-Duo Host effectively bypasses the technology used to remote the sessions to

the end users, and will therefore be compatible with Microsoft Terminal Services clients

as well as Citrix Presentation Server (now known as XenApp) clients.

Note: PC-Duo only supports TS sessions created on server-class Windows operating

systems such as Windows Server 2003 and Windows Server 2008.

See Terminal Services tab in PC-Duo Host Guide for more specific configuration and

setup information.

Root Host for TS sessions

The “Terminal Services” feature of Windows Server 2003 and Windows Server 2008

allows multiple virtual desktop sessions to be active simultaneously. PC-Duo provides

remote access and remote control to these sessions on the Windows Server by injecting

a separate instance of the Host service into every new TS session. A special version of

the Host called the "root" Host must be loaded on the TS server (a "root" Host is a

standard Host with a special TS license key - see About tab in the PC-Duo Host Guide

for more information); it will automatically spawn new Host instances every time a new

TS session is created.

Transient Hosts

Each TS instance of the Host will have its own unique workstationID and must be

configured to report to a Gateway. When it first reports to the Gateway Server, it will be

automatically managed and added to the “All Hosts” group. The TS Hosts are considered

transient, since they go away when the TS user logs out of his/her session. In order to

keep track of transient TS Hosts, the PC-Duo Gateway will create a new Group called

"Terminal Services on <Servername>", and automatically insert transient Hosts into this

Group. They are automatically deleted from the Gateway when the TS session ends. The

main purpose of this Group is to allow security to be assigned to the Hosts and TS

sessions that belong to this Group, and to provide the correct and appropriate access to

the TS-based Host instances.

Note: PC-Duo Host for Terminal Services works on Server 2003 & Server 2008, and

requires a Gateway Server v11.3 or later.

Recording TS Hosts

Recordings are normally deleted from the Gateway database when their associated

workstation record is deleted. Transient TS Host workstation records are automatically

deleted from the Gateway when the TS user logs out of his/her session. However, to

prevent recordings of TS Hosts from being automatically deleted when the TS session

ends, the TS session recordings are reassigned to an artificial permanent workstation

record called "Recordings on <Servername>". All recordings of all TS Hosts on a given

TS server will be associated with this one record. This approach has the following

advantages:

 Recordings are not orphaned

 All recordings can be kept in one place,

 TS recordings can be kept separate from console (root Host) recordings

 Security can be configured separately for each recording.

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