Recently I had to do some work on a small embedded system. During development, we had an Ethernet port with associated magnetics on a riser board. But once it w

Recently I had to do some work on a small embedded system. During development, we had an Ethernet port with associated magnetics on a riser board. But once it went to production, we couldn't fit that so there was only a UART serial port. Through use of PPP and a Linux laptop, it was like the machine was on the network as far as use for ssh, gdb, etc. I thought it was a pretty cool trick going back to the 56k modem days!