NAME | SYNOPSIS | DESCRIPTION | EXAMPLES | FILES | SEE ALSO | NOTES
/var/yp/securenets
The /var/yp/securenets file defines the networks or hosts which are allowed access to information by the Network Information Service ("NIS").
The format of the file is as follows:
Lines beginning with the ``#'' character are treated as comments.
Otherwise, each line contains two fields separated by white space. The first field is a netmask, the second a network.
The netmask field may be either 255.255.255.255 (IPv4), ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff (IPv6) , or the string ``host'' indicating that the second field is a specific host to be allowed access.
Both ypserv(1M) and ypxfrd(1M) use the /var/yp/securenets file. The file is read when the ypserv(1M) and ypxfrd(1M) daemons begin. If /var/yp/securenets is present, ypserv(1M) and ypxfrd(1M) respond only to IP addresses in the range given. In order for a change in the /var/yp/securenets file to take effect, you must kill and restart any active daemons using ypstop(1M) and ypstart(1M).
If individual machines are to be give access, the entry could be:
255.255.255.255 192.9.1.20 |
host 192.0.1.20 |
If access is to be given to an entire class C network, the entry could be:
255.255.255.0 192.9.1.0 |
The entry for access to a class B network could be:
255.255.0.0 9.9.0.0 |
Similarly, to allow access for an individual IPv6 address:
ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff fec0::111:abba:ace0:fba5e:1 |
host fec0::111:abba:ace0:fba5e:1 |
To allow access for all IPv6 addresses starting with fe80:
ffff:: fe80:: |
The Network Information Service (NIS) was formerly known as Sun Yellow Pages (YP). The functionality of the two remains the same; only the name has changed. The name Yellow Pages is a registered trademark in the United Kingdom of British Telecommunications plc, and may not be used without permission.
NAME | SYNOPSIS | DESCRIPTION | EXAMPLES | FILES | SEE ALSO | NOTES