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G3100 Not work issue/bug

Hello,

I have a small web server at home and with this new router I am having a problem, I do not have access to the web server with the wan ip from the router network, but if I use a different network if I have access, everything worked perfectly with the old router, I have already tried everything within my reach and I cannot access my webserver from the router network, if anyone knows a solution I would greatly appreciate it.

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smith6612

Verizon is apparently using Ports 443 and 80 for the NAT Hairpin already on the router. Does it work correctly if you use other ports? If so, change the port the router uses for remote management (if enabled, and you should keep it disabled btw) so it does not conflict with your web server. (Citing this thread: https://forums.verizon.com/t5/Fios-Internet/G3100-and-Hairpin-NAT-NAT-loopback/td-p/907397)

Alternatively, you can go into the router's DNS Settings and add a static DNS entry for your web server, so the domain resolves internally to your web server's IP rather than your WAN IP.

Cang_Household

No. 80 and 443 ports are not occupied unless you have enabled WAN side administration, which should be disabled for security reasons.

Could you screenshot your Port Forwarding page to see?

bav4688

The ports are open since when I access my wan ip from another network I have access to the website, I am using DMZ Host.

bav4688

This worked for me but having more than one domain assigned to my server is not viable because if I add more than one hostname to the router none work.

Thanks

Cang_Household

Do not configure the DMZ as that is difficult to secure. Again, could you screenshot the Port Forwarding page?

Domain names of your website should be configured in your domain Registrar’s DNS server, not on your router.

Another thing is hosting servers for commercial purposes is a violation of ToS.

dslr595148

More than likely it is a loopback/hairpin/Reverse NAT.

One of the ways to check for this/that, I point to https://www.pcwintech.com/test-for-reverse-nat

bav4688

I think you misread what I wrote or maybe I wrote something wrong.

The web server works and the ports are open to the public if you are example on your phone and you are using mobile data you can enter the website but if you connect to the wifi of my router you do not have access to the website, if I use the network of my router I can not access the website of my server, but if I do it from another network outside my router I can access the website.

I already have the dns servers pointing to my public ip and they resolve the domain names perfectly.

Thanks in advance.

bav4688

It's a problem with my router call verizon they say they will fix it, it's a problem with the loopback.

Cang_Household

I doubt the engineering would add this feature. NAT hairpinning is not a standardized feature recommended by any RFCs, and using this feature adds inefficiencies to a network.

You have not answered on my previous question. When you can establish a straight forward link connection, why do you want to add a third device to route the traffic?

hitnrun30

Did you ever figure this out. I have 2 test domains through NO-IP and externally if I use the URL no problems. Internally with the url no luck.

I did what was instructed which is add a DNS Server entries for my sites, and add NO-IP info for the sites in Dynamic DNS. Everything else I have tried does not work. Hoping you have more insight.

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