wlan2eth

Transparently bridge your WiFi connection to your Ethernet interface.

This is a wireless to Ethernet router that bridges traffic from your wireless network to a wired client. The router creates a private LAN and clones the client's MAC address to its wired interface to get an IP from the DHCP server. All ports are forwarded to the client so traffic can flow in both directions.

This is about as transparent as you can get without using custom software, messy hacks, or a Wireless Distribution System (WDS).

Install

This service was developed for Ubuntu but will likely work with other Linux versions as well.

First, copy config/config.sh.example to config/config.sh and edit the file.

Then run sudo ./bridge-install.sh and everything will be set up the way it needs to be. This should be installed on a fresh machine. The install script is safe to run as many times as you need to.

The current folder will be copied to /opt/wlan2eth and chown-ed to root.

Once the install script has finished, reboot and you're good to go!

Use

To bridge your wired client to your WiFi network, simply plug it into the port you specified in ETH_IFACE. Wait a few seconds for the bridge to configure itself and once your client is given the IP 192.168.2.2, you're good to go.

The bridge watches the status of the wired interface and when it is unplugged it will reset itself and wait for reconnection. It waits for its wireless interface to get an IP from DHCP before continuing so if you notice the bridge isn't giving your client an IP, check the bridge's WiFi connection.

The bridge device forwards all ports to your client, except the port specified in ROUTER_SSH_PORT (default is 64535). This is the bridge's SSH server.

To access the bridge over SSH, do ssh [username]@[IP] -P [ROUTER_SSH_PORT]. You can use the command sudo journalctl -b -f -u wlan2eth to view the bridge logs.

To Do

• forward multicast traffic from the WLAN?