mechanisms are provided to securely access systems of a distributed computer system by entering passwords. Some systems are accessible by equal, and some systems are accessible by different passwords. The mechanisms store information, which systems (I, II) are accessible by equal, and which are accessible by different passwords and ask to enter a proper password when opening a session by accessing a system of the distributed computer system. The mechanisms cache the password and use the stored information to verify, if another system to be accessed during the current session is accessible by an equal password like a system already accessed during said session. If the result of the verification is true, the mechanisms re-use the adequate cached password. If the result of the verification is false, the mechanism ask to enter a proper password to access the other system and cache the password required to access the other system in a way that during the current session, it can be re-used when accessing other systems accessible by the same password.