Novell LINUX ENTERPRISE SERVER 10 - INSTALLATION AND ADMINISTRATION 11-05-2007 Installation Manual page 567

Table 30.2 Specific Addresses
Address Type
Base Network Ad-
dress
Broadcast Address
Local Host
Because IP addresses must be unique all over the world, you cannot just select random
addresses. There are three address domains to use if you want to set up a private IP-
based network. These cannot get any connection from the rest of the Internet, because
they cannot be transmitted over the Internet. These address domains are specified in
RFC 1597 and listed in
Table 30.3 Private IP Address Domains
Network/Netmask
10.0.0.0/255.0.0.0
172.16.0.0/255.240.0.0
192.168.0.0/255.255.0.0
Description
This is the netmask AND any address in the network, as shown
in Example 30.2, "Linking IP Addresses to the Netmask"
(page 548) under Result. This address cannot be assigned to
any hosts.
This basically says, "Access all hosts in this subnetwork." To
generate this, the netmask is inverted in binary form and linked
to the base network address with a logical OR. The above ex-
ample therefore results in 192.168.0.255. This address cannot
be assigned to any hosts.
The address 127.0.0.1 is assigned to the "loopback device"
on each host. A connection can be set up to your own machine
with this address.
Table 30.3, "Private IP Address Domains" (page 549).
Domain
10.x.x.x
172.16.x.x – 172.31.x.x
192.168.x.x
Basic Networking 549