<a href="https://github.com/socoola/yhrouter/blob/master/user/goahead/src/goahead.c#L939" rel="nofollow">https://github.com/socoola/yhrouter/blob/master/user/goahead...</a><p>I'm no security export, but what this is doing is creating a UDP socket (SOCK_DGRAM) that expects commands to be executed (using call_shell()). It then replies with the output back to the sender of the UDP packet.