Sorry for asking the same dumb question, but I would like to make sure I am doing things correctly. I have an LHG LTE and a static public IP from the carrier. I want to place this device in modem-only configuration so that my firewall/router downstream can be the router. I have watched MUM videos and read the Wiki, so I am thinking that Passthrough is what I need. However, I want to make sure that if there is some hurdle, I avoid it. I have created an extra network address to communicate with LHG for management as advised by numerous people. What makes me worry is the Quick Set settings which show NAT enabled and Masquerade. I have a static IP and was advised not to use masquerade with static IP. I should use src-nat in firewall instead. Does anyone have experience configuring such a setup and can you pass along your knowledge to me?