NAME

       netgroup - specify network groups

DESCRIPTION

       The netgroup file defines "netgroups", which are sets of (host, user, domain) tuples, used
       for permission checking when doing remote mounts,remote logins and remote shells.

       Each line in the file consists of a netgroup name followed by a by a list of members,
       where a member is either another netgroup name, or a triple:

          (host, user, domain)

       where the host, user, and domain are character strings for the corresponding components.
       Any of the three fields can be empty, in which case it specifies a "wildcard", or may
       consist of the string "-" to specify "no valid value". The domain field must either be the
       local domain name or empty for the netgroup entry to be used. This field does not limit
       the netgroup or provide security. The domain field refers to the domain in which the
       triple is valid, not the domain containing the the trusted host.

       A gateway machine should be listed under all possible hostnames by which it may be
       recognized:

          gateway (server, , ) (server-sn, , ) (server-bb, , )

       The getnetgrent(3), function should normally be used to access the netgroup database.

FILES

       /etc/netgroup

SEE ALSO

       getnetgrent(3), exports(5), makedbm(8), ypserv(8)

WARNINGS

       The triple (,,domain) allows all users and machines trusted access, and has the same
       effect as the triple (,,). Use the host and user fields of the triple to restrict the
       access correctly to a specific set of members.

AUTHOR

       Thorsten Kukuk <kukuk@thkukuk.de>