Mike,
Port forwarding and DMZ behave identical in terms of reaching the forwarded ports. You should notice no difference, but
some routers for some reason behave better with DMZ.
However, I would use it cautiously. You open up all ports, including telnet, so it is a security risk. If you do use DMZ, then
change the telnet and web ports and make sure that you have a password set to access the RRC.
73,
Mitch DJ0QN / K7DX