ZyXEL Communications NWA-1100 User Manual

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 Chapter 10 IP Screen
ZyXEL NWA-1100 User’s Guide
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10.5  Technical Reference
This section provides the technical background information about the topics covered in this 
chapter.
10.5.1  WAN IP Address Assignment
Every computer on the Internet must have a unique IP address. If your networks are isolated 
from the Internet (only between your two branch offices, for instance) you can assign any IP 
addresses to the hosts without problems. However, the Internet Assigned Numbers Authority 
(IANA) has reserved the following three blocks of IP addresses specifically for private 
networks.
You can obtain your IP address from the IANA, from an ISP or have it assigned by a private 
network. If you belong to a small organization and your Internet access is through an ISP, the 
ISP can provide you with the Internet addresses for your local networks. On the other hand, if 
you are part of a much larger organization, you should consult your network administrator for 
the appropriate IP addresses.
"
Regardless of your particular situation, do not create an arbitrary IP address; 
always follow the guidelines above. For more information on address 
assignment, please refer to RFC 1597, Address Allocation for Private Internets 
and RFC 1466, Guidelines for Management of IP Address Space.
Table 28   Private IP Address Ranges
10.0.0.0
-
10.255.255.255
172.16.0.0
-
172.31.255.255
192.168.0.0
-
192.168.255.255