Protected CERN Server Setup Access can be restricted according to user name, internet address, or both.
Access control can be tree-level, file level, or both.
If user-wise access control is used there has to be a password file listing all the users and their encrypted passwords. Password file can be maintained by htadm program which is a part ot CERN httpd distribution. However, Unix users are in no way connected to the WWW access authorization. Group File Group file contains declarations of groups containing users and other groups, with possibly an IP address template. The list of items is called a group definition.