I have a modem called Zyxel VMG3312-B10A and it doesnt recognize my Netduma ,i have tried DMZ ,i have tried firewall settings but i am unable to login into Netduma interface settings with the 192.168.88.1 ip address but when i am changing with ethernet cable connected from PC to directly to Netduma i am able to access into interface control with the ip number 192.168.88.1 . But when i am connected from modem through when Netduma connected with ethernet cable to modem ,i am unable to get into interface.URGENT HELP!!!!!! The modem doesnt recognize NETDUMA !!!!!!!