Andreas Tirok wrote

The initial idea was to hide the other users to any non authorized person, which has no account. (...) They may notice the accounts and try to break in from home or somewhere else. In fact there is a firewall, but I want to prevent this scenario.

Try setting UserView=false in kdmrc Andreas Baetz ********************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been scanned for the presence of computer viruses. **********************************************************************