Hey guys i have a modem-router intsalled by local isp here in our country, the thing is it doesn't have any port forwarding or dmz features in it.. Im using the dmz for my cctv network system.. my question is if i installed another router(2nd router as ap dhcp disabled) which has a dmz or port forwarding, will the modem-router(main router) or myu network adopt it? will it work? thanks in advance...