User manual

CRADLEPOINT CBA750B | USER MANUAL Firmware version 4.2

Each network must have a distinct IP address. Most users will want an address from one of the following private IP

ranges:

• 10.0.0.1 - 10.255.255.1

• 172.16.0.1 - 172.31.255.1

• 192.168.0.1 - 192.168.255.1

NOTE: The final number does not have to be 1, but it is a simple, logical

convention for routers that leaves higher numbers free for other devices.

Netmask: (Default: 255.255.255.0) The netmask controls how

many IP addresses can be used in this network. The default

value allows for 254 IP addresses, which is enough in most

cases.

Routing Mode: (Default: NAT.) Each network can use a

unique routing mode to connect to the Internet and other local

networks. NAT is desirable for most configurations. Select

from the following options in the dropdown list:

• NAT (default): Network Address Translation hides

private IP addresses behind the router's IP address.

This is the simplest and most common choice for

users, because NAT does the translation work for you.

• Standard: NAT-less routing. If you select Standard,

you must separately configure your IP addresses so

that they will be publically accessible. Typically you will not select this option unless you have a specific reason to

bypass NAT.

• IP Passthrough: IP Passthrough passes the IP address given by a cellular modem (WAN) through the router to

Ethernet (LAN). You can also enable IP Passthrough with the ROUTER/PASSTHROUGH SWITCH on the device

itself or with the IP Passthrough Setup Wizard (see Getting Started ! IP Passthrough Setup).

• Disabled: Disable this network.