I saw a client with this issue. We removed the router and connected directly to the ISP supplied modem and it still dropped. The ISP said that was normal. So if your ISP is winking out once in a while and keeping in mind that recent weather event, you have choices to make.
About the DMZ. I think they mislead you. When I use the DMZ I never use the word "hosting." If we drop that word we only need to put the IP address of the machine we want to be in the DMZ in the router DMZ settings. I will not go any deeper than this because folk must be comfortable with that change. If not, they should not be in that setup page.
I'm using a PK5000 modem/router provided by my ISP and it keeps dropping our internet connectiong. My husband and I both work from home. I have a router connected to my work computer and log in that way and he logs in through a VPN on his work laptop. We have turn WPS off (which now affects our TV internet, not a huge deal) and in order for him to stay connected they told us to enable DMZ hosting. I'm not a tech type but I'm learning. We're still being dropped randomly and the ISP says we should get our own modem/router and bridge it to prevent it from dropping by using a switch. So now that I'm totally confused by all this, I'm wondering if the best bet is to get a new modem/router and not use the one from the ISP. My work IT team thinks there might be filters on the modem with all of the vpn'ing activity. Suggestions? Should I buy a modem/router and which would solve our problem? Do I also need to install the switch on it? We have a home desktop, home wireless laptop, hubby work laptop and then my work desktop and I have to plug my work phone/computer into the router they provided to have access. If I lose work computer I also lose phone - it all goes through the same box. Help!