This is a good article that covers the basics of looking for a UART debug port that could be used as a way to get some low level access to the router and go fro

This is a good article that covers the basics of looking for a UART debug port that could be used as a way to get some low level access to the router and go from there: https://www.riverloopsecurity.com/blog/2020/01/hw-101-uart/ https://www.riverloopsecurity.com/blog/2020/01/hw-101-uart/