|
The WinCC OA OPC UA server is able to operate with
or without user
authentication. This setting can be defined with the config entry
enableAnonymous
in the config file. As it is a config entry it is not possible to change
this setting at runtime (a restart of the server manager is necessary).
Furthermore this setting also applies for all clients.
If enableAnonymous
is active, the server does not check the user authentication. That means
that it approves all users or the anonymous user mode.
If enableAnonymous
is inactive (default setting), the server checks whether there is a valid
WinCC OA user. The permissions of the WinCC OA user are not verified. That means
that the user merely has to be active and the password must be correct
in order that the connection is accepted by the client. In this case the
anonymous user mode is not accepted. | 
