There are several ways to access the AIX Version 4.1 BOS, some of which are controlled by the AIX user license. An AIX Version 4.1 user license is required for a user to access the system with the following methods:
* Logins provided via a getty (from an active, local terminal)
* Logins provided using the rlogin or rsh -l command
* Logins provided using the telnet or tn command
* Logins provided through the Common Desktop Environment (CDE)
* Logins provided using Apple's CommandShell remote AppleTalk client
Any other way of accessing the AIX Version 4.1 BOS does not require AIX user licenses (for example: ftp, rexec, rsh without the -l flag, nfs).
Third-party applications may implement their own user or other license restrictions.