Access lists allow us to group machines together when specifying share options. In fact, we've just shown the most common method of using them: a list of individual host names, similar to that shown below:
server# share -F nfs -o ro=helium:lithium /file/to/share server#
An access list can be formatted in a number of other ways. These are shown in the table below. Any of the types in Table 18.5 can be used, so long as the list is colon-separated.
|Host name||List of individual hosts||lithium|
|Netgroup||Name of an NIS netgroup map||some_machines|
|Network||Network name or IP address, identified by an “@”||@192.168.22|
|DNS||Machines in a specific domain, identified by a “.”||.sun.com|
|(Deny access)||Deny access ...|