Beckhoff TF6120, Manual

Page: 58 / 76

Appendix
TF6120 58 Version: 1.1
Note: In a mixed configuration (e.g. Server Machine in a Domain and Client Machine in a Workgroup) the so
called doubble identification should be done. This means to add User Accounts to the Workgroup Machine
which are identically (Name and PWD) the same as the User Accounts on the Domain. By this function calls
to the Workgroup Machine can (locally) be identified and granted without "asking" the Domain Controller.
5.2.2.2.3 Workgroup
For proper DCOM security settings it is essential to identify the configuration of the Client and the Server
machine. If both machines are members of the same workgroup there will be no central point for user
authentification. This means that every single machine must have all information on all users that should be
able to remote access this node (local identification). The administrative effort will increase imensely when
adding new users.
• Workgroup
The Client and Server Machine should be member of the same Workgroup.
• Users Accounts
As authentification is performed locally on every single machine, the User Accounts (Name and PWD)
should be identical on the Client and the Server Machine.
• Operation System
The Operation System on the Client and the Server Machine should be from the same family (all NT,
all 2K or all XP). When doing "mixed configuration" certain (OS specific) settings have to be taken into
account.
To keep configuration simple it is assumed that two machines have the same operating system installed, are
both in the same Workgroup and have the same user accounts (same person/PWD actually logged on). On
the Server Machine an OPC Server is located and on the Client Machine an OPC Client was installed.