You may add one or more logins to your system so incoming uucp (uucico) requests from different remote machines can be handled differently. Each remote machine should have an entry in its Systems(4bnu) file for your machine that contains the login ID and password that you add to your /etc/passwd file.
The default entry in the /etc/passwd file is shown here.
uucp:x:5:5:0000-uucp(0000):/usr/lib/uucp nuucp:x:10:10:0000-uucp(0000):/var/spool/uucppublic:/usr/lib/uucp/uucicoThis entry shows that a login by nuucp is answered by /usr/lib/uucp/uucico. The home directory is /var/spool/uucppublic. The ``x'' indicates that the encrypted password is stored in /etc/shadow.
Notice that the standard shell is not given to the nuucp login. The shell that nuucp receives is the uucico daemon that controls the conversation when a remote machine logs in to your machine.
The assigning of passwords for the uucp and nuucp logins is left up to the administrator. The passwords should be at least six to eight characters. Only the first eight characters of the passwords are significant. If the password for the access login is changed for security reasons, make certain that the remote machines that are a part of your network are properly notified of the change.