well the 10.x.x.x address is your LAN address, and the 200.x.x.x is your external IP...
I assume you have a router, from dlink , smc netgear whatever....
loot at the manual of the souter, and check how to forward ports to internal computers...there are most often examples with webservers. check on howto do this stuff, and forward the ports defined in your amule-preferences, defaults here are 4662/tcp, 4665/udp and 4672/udp
forward those ports to the 10.x.x.x ip address of your linux box.
if you still get a lowid, check that you are not running a firewall on your macOS, or that you configure that on correctly
stefanero