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Bobby121418's avatar
Bobby121418
Aspirant
Nov 28, 2021

R8000 NAT/port forwarding issue

Hi, I just got the R8000 and it sits between my service provider modem/router and my Synology NAS. I have configured the R8000 to be on a different subnet (192.168.1.1) to my broadband provider (EE ...
Bobby121418's avatar
Bobby121418
Aspirant
Nov 29, 2021
Hi,
Thank you very much for your suggestions. I have in fact configured as option 2 as you suggested because the modem/router does not allow bridge mode. I am still however having the issue I mentioned.
Thanks
FURRYe38's avatar
FURRYe38
Guru - Experienced User
Nov 29, 2021

Depending upon now well the DMZ or IP pass thru is on the ISP Modem, you may still encounter the double NAT issue. 

You may need to put the R8000 in to AP mode and let the ISP modem handle the NAT. 

  • Bobby121418's avatar
    Bobby121418
    Aspirant
    Nov 29, 2021

    Hi,

    Thanks for your help so far.

    So I have done a tracert (via CMD) and its funny because I can get route traces for sites, such as the BBC or CNN, but cannot get my NAS domain name address resolved. It's as if DNS is not recognising my domain name. However, if I try to access my domain name from outside my LAN, I can get through.

    Any thoughts? Is it a certificate problem ever since I added the Netgear router in?

    Thanks

     

    • FURRYe38's avatar
      FURRYe38
      Guru - Experienced User
      Nov 29, 2021

      If your trying to get responced back thru the router, not sure if this model supports loop back which is sometimes needed when resolving from the LAN to WAN back to LAN side. 

       

      If the R series router is in the ISP modems DMZ, this should help alleviate some of the double NAT issues however I've see some ISP modems not do DMZ or IP passthru correctly. 

      You might try the NAS connected to the ISP modem and see if it works there with out the R series router online...

      • Bobby121418's avatar
        Bobby121418
        Aspirant
        Dec 06, 2021
        Hi,
        Thanks for your suggestions.
        So, I had the configuration initially where my NAS was connected directly to the ISP router and all was fine.
        I tried your solution by putting my ISP router in DMZ mode to the NG R router. The problem is twofold:
        1. The NAS now connected to NG R however, I can only connect to the NAS via 192.xxx.xxx.xxx IP while at home (on WiFi) and the DDMS domain does not work. The domain address only works if I am on an external network i.e on mobile.
        2. I get video streamed from the NAS onto TV on the same Lan with a lot more buffering than when the NAS was connected directly to the ISP router and no NG router in the middle.

        Thanks
        PS. My ISP router doesn't do bridge so the option as you suggested was DMZ and no firewall or DHCP.