What’s an easy way to capture traffic on the WAN port? I’m not proficient with openwrt and networking, I just need an easy tutorial with a few steps. Looks like I may need to install Wireshark on my computer and mirror the WAN port – will it work for GL.Net routers, Brume in particular? I need to capture UDP packets coming to my WAN port from the cable modem on UDP ports 7 and 9.
The reason: I was unsuccessful in configuring my Brume to do packet broadcasts to do PC wake-on-lan. Port forward to broadcast IP x.x.x.255 did not work. Creating a permanent ARP binding also did not work. Before I declare that GL.iNet routers are incapable of broadcasting, I just want to confirm that my UDP packets indeed come into the router from the outside, to make sure it’s not my ISP fault.