Sierra Wireless MP 875 - Manual (Page 50)

MP875 Modem User Guide
50 2130808
Non-NAT mode
In non‐NAT configuration, you can connect only one client
device, such as a computer to the MP modem, as shown in
Figure 5‐1 .
In this mode, the IP address obtained from the external
network is passed directly to the client device, which is why
there can be only one client.
Figure 5-1: MP modem in non-NAT mode
NAT mode
In NAT mode, you can connect up to 10 devices to the MP
modem using Ethernet connections and up to 10 additional
devices using WAP.
In this mode, the IP addresses assigned by the MP modem to
the client devices are private IP addresses. The MP NAT
manages the translation of IP addresses and ports between the
local and external networks.
The following illustration shows a sample network with 4
computers, two connected on an Ethernet LAN and two
connected with WAP.
IP:aaa.bbb.ccc.ddd
IP:aaa.bbb.ccc.ddd
MP modem in non-NAT mode
Client device
Serial, USB, Ethernet,
or WAP interface
External
Network