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netgroup - network groups data base
/etc/netgroup
netgroup defines network wide groups used for access permission
checking during remote mount request processing. Each
line defines a group and has the format:
groupname member-list
Each element in member-list is either another group name or
a triple of the form:
(hostname, username, domainname)
The hostname entry must be fully qualified if the specified
host is not in the local domain.
The filer can also use the netgroup NIS map.
Since the filer uses netgroups only in /etc/exports (see
na_exports(5)), the username entry is ignored. The domain_name
field refers to the domain in which the netgroup entry
is valid. It must either be empty or be the local domain,
otherwise the netgroup entry is ignored. This allows a single
/etc/netgroup file to be used for filers in multiple
domains.
This is a typical netgroup file:
trusted_hosts (adminhost,,) (zeus,,) (thor,,)
(minerva,,)
- untrusted_hosts
- (sleepy,,) (dopey,,) (grumpy,,)
(sneezy,,)
- all_hosts
- trusted_hosts untrusted_hosts
With this netgroup file it might make sense to modify
/etc/exports to export / on the filer only to trusted_hosts,
but to export /home to all_hosts.
/etc/netgroup
- /etc/exports
- directories and files exported to NFS
clients
- /etc/hosts
- host name data base
na_exportfs(1), na_hosts(5), na_exports(5), na_nis(8)
The only place that netgroups can be used is in the access=
option of the exportfs command (see exportfs(1)) and
/etc/exports.
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