Class E; Private Network Ip Addresses; Network Address Translation (Nat; Subnets - Comtech EF Data Vipersat CDM-570 User Manual

I P Ad d r e s s i n g

Class E

• 240.0.0.0 to 255.255.255.255
• Reserved for experimental use and limited broadcast

Private Network IP Addresses

RFC 1918 defines blocks of addresses for use on private networks:
• 10.0.0.0 – 10.255.255.255
• 172.16.0.0 – 172.31.255.255
• 192.168.0.0 – 192.168.255.255

Network Address Translation (NAT)

Private networks can only connect to the public Internet by using a Network
Address Translation (NAT) device (a router, for example) or a proxy server
which has been assigned a public IP address. These network devices use a
public IP address to request information from the Internet on behalf of the
private IP addressed devices on the associated private network.
This use of private addresses helps to conserve public IP addresses.

Subnets

Subnets can be defined as the further segmentation of the InterNIC assigned
Network ID IP address. The amount and type of subnetting performed by the
organization is determined by the network layout.
A-8
Host 1
192.168.0.2
Host 2
192.168.0.3
Figure A-5
192.168.0.1 Public IP
NAT Router
NAT Router Example
V i p e r s a t C D M - 5 7 0 / 5 7 0 L U s e r G u i d e
Internet