Novell LINUX ENTERPRISE SERVER 11 - SECURITY Manual page 45

Figure 3.4 NIS Server Maps Setup
7 Enter the hosts that are allowed to query the NIS server. You can add, edit, or
delete hosts by clicking the appropriate button. Specify from which networks
requests can be sent to the NIS server. Normally, this is your internal network.
In this case, there should be the following two entries:
255.0.0.0
0.0.0.0
The first entry enables connections from your own host, which is the NIS server.
The second one allows all hosts to send requests to the server.
127.0.0.0
0.0.0.0
Using NIS 31