Building an LTE Access Point with a Raspberry Pi

With this setup, you can now connect another computer through the wired network interface, statically configure the computer with an IP address, i.e. , and SSH into the Pi using your changed credentials. This makes the initial setup quite easy as we just need to add another network device at the end of and configure it to automatically receive IP-addresses:

For the routing we need to enable IP forwarding within the configuration file by setting:

In addition we need some firewall rules to forward and masquerade traffic from our bridge ( ) to the LTE modem. The weak point of this setup seems to be the modem: the Huawei E3372 HiLink network mode might be the best for an easy setup, but I really would like to compare it with a “traditional” modem setup – e.g., with an assigned IP address and no additional NAT being performed by the modem (through the fake network interface).

Source: snikt.net