Archer C2300 v2.0 - Timing out port forwarded pi web server on WAN

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Archer C2300 v2.0 - Timing out port forwarded pi web server on WAN

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Archer C2300 v2.0 - Timing out port forwarded pi web server on WAN
Archer C2300 v2.0 - Timing out port forwarded pi web server on WAN
2021-03-21 15:37:17
Model: Archer A2  
Hardware Version: V2
Firmware Version: 1.1.1 Build 20200918 rel.67850(4555)

I've been using a Virgin Superhub 3 as a router for a few years now, port forwarding my pi as a 24/7 web server. It's always worked fine as Virgin gives you a sticky IP as long as you stick to the same MAC, and it's not mission critical for me to change the DNS record if it does change.

 

I bought the Archer C2300 to replace the Superhub as a router (because it sucks) so the Superhub is now purely a modem, the C2300 is doing all my routing.

 

Having made the swap and setup a virtual server for the pi though, with the same parameters as I had on the Superhub, I can't get a reliable connection to the pi via the web.

  • I can hit the pi from LAN and the web page loads instantly
  • I can hit the pi from WAN and the web page take up to 3 mins to load

 

First, here's what I've setup:

 

Things I've tried:

  • Swap out C2300 for an old Netgear and DMZ the pi - WORKS
  • DMZ pi and disable virtual server - SAME RESULT
  • Change virtual server details to point at my own PC running a dev copy of the web server - SAME RESULT
  • Disable router firewall + antivirus - SAME RESULT
  • Disable Upnp - SAME RESULT
  • Disable all ALG options - SAME RESULT
  • Force Virgin to update my IP address by spoofing MAC - SAME RESULT
  • Wait 24 hours with NO changes - SAME RESULT
  • Reboot both the Virgin router and the C2300, wait 30 mins - SAME RESULT

 

I feel like I'm missing something subtle. For the most part, I can always hit the pi's web server and get a response, but either in the request or the response, it's coming back incredibly slowly.

I would appreciate any further suggestions or theories, other than this the router works perfectly and is a breeze to use/setup, but this is a real sticking point for me.

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Re:Archer C2300 v2.0 - Timing out port forwarded pi web server on WAN
2021-03-22 06:55:24

@kaffo 

 

Is the network layout as simple as Virgin Superhub 3 to the WAN of the C2300? To locate this issue and try to fix it, we would like to follow up on your case via email. Please check your inbox and provide the information that we need.

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Re:Archer C2300 v2.0 - Timing out port forwarded pi web server on WAN
2021-03-22 16:05:20

@Kevin_Z 

Hi Kevin, I replied to the support email too, but for sake of completeness I'll reply here too:

Yes, The layout is quite simple and mostly wired.
The Superhub 3 is in modem mode connected directly to the WAN port of the C2300 with a short patch cable, which dynamically allocates it an IP with no issue.
My home computer is connected directly to the C2300 gigabit port via another patch cable and the pi is on wifi (albeit, it's close enough to run some CAT-V to if need be).
 
Since I wrote the original message, I've once again swapped the C2300 out with my old Netgear router and managed to successfully get it to port forward the pi without DMZ in the same configuration as the C2300.
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