MAN page from Old RedHat 5.X ypserv-1.3.4-1.i386.rpm
netgroup
Section: Linux Reference Manual (5)
Updated: August 1996
Index NAME
netgroup - specify network groups
DESCRIPTION
The
netgroupfile 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 aby a list of members. Where members is either another netgroup name,or a triple:
- (host,user,domain)
where the host, user, and domain are character strings for thecorrespoinding components. Any of the three fields can be empty,in which case it specify a "wildcard", or may consist of the string "-" to specify "no valid value". The domainfield must either be the local domain name or empty for the netgroupentry to be used. This field does not limit the netgroup or providesecurity. 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 possiblehostnames by which it may be recognized:
- gateway (server,,) (server-sn,,) (server-bb,,)
The getnetgrent functions should normally be used to access thenetgroup database.
FILES
/etc/netgroup
SEE ALSO
getnetgrent(3),
exports(5),
makedbm(8),
ypserv(8)
WARNINGS
The triple (,,domain) allows all users and machines trustedaccess, and has the same effect as the triple (,,). Use the
hostand
user fields of the triple to restrict the accesscorrectly to a specific set of members.
BUGS
The Linux libc does not query the /etc/netgroup file directly, it only querys the NIS server for the groups. So the netgroup database must be stared in the form of a hashed dbm database just like the
passwd(5) and
group(5) databases.
AUTHOR
Thorsten Kukuk <kukukAATTuni-paderborn.de>
Index
- NAME
- DESCRIPTION
- FILES
- SEE ALSO
- WARNINGS
- BUGS
- AUTHOR
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