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====== Configuring communication with CDC-modems using the Huawei E3531 as an example ======

Some of [[tested_3g_modems|tested 3G modems]] work in USB CDC Ethernet mode. This means that the computer sees them as a network card, and not as a modem. In this case, the connection setup is more similar to the LAN/WAN interface setting than the modem setup.

Let's look at setting up a connection to the Kyivstar network using the Huawei E3531 modem as an example.

{{ network:huawei-e3531_cdc.jpg?direct&600 |}}

On the Network-> Interfaces page, click the "Add new interface ..." button.

{{ network:p_net_scr_1.png?direct&600 |}}

On the page for creating a new interface in the list of interfaces select the new item eth2. eth2 is the network interface which the modem works through. As the protocol choose DHCP. The name is 3G.

{{ network:eth2_for_cdc.png?direct&600 |}}

After creating this interface, select the WAN zone (to reject incoming connections).

Your Internet connection is set up. Use it.