NAT Loopback / Reflection doesn't work on vr1200v

NAT Loopback / Reflection doesn't work on vr1200v
NAT Loopback / Reflection doesn't work on vr1200v
2022-05-23 15:26:05
Hardware Version: V1
Firmware Version: 1.0.0 0.8.0 v600e.0 Build 220415 Rel.16633n

I recently replaced my failing Vodafone dsl router with a vr1200v

 

Everything is configured and working correctly EXCEPT I cannot access my file/web server from inside the network.  It works correctly from outside the network.

 

The server is not in the DMZ; I've forwarded the relevant ports to its internal IP.  The IP is static and reserved.  However it's outside the DHCP range (DHCP uses 192.168.1.100-199, this server is 192.168.1.70) is that a problem?

 

 

DDNS is configured on the webserver not the router (I use Google DDNS)

 

NAT loopback / reflection is supposed to handle this but I can't see how to enable / disable it on the router

 

Any advice is helpful, thanks

 

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6 Reply
Re:NAT Loopback / Reflection doesn't work on vr1200v
2022-05-24 11:42:03

  @Beak 

Hi, the NAT loopback should be enabled by default.

I see you mentioned the outside access to the local file server was ok, and Do you mention for both WAN IP and DDNS?

In the local network, neither WAN IP nor DDNS worked, right?

Are you able to access via server IP---192.168.1.70 in the local network?

Thank you very much.

Best regards.

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Re:NAT Loopback / Reflection doesn't work on vr1200v
2022-05-25 12:08:24

  @David-TP the server is reachable from the WAN side using either the IP or DDNS

 

It is not reachable inside the network using either WAN IP or DDNS

 

It is reachable inside the network using its internal IP 192.168.1.70

 

Note that the server is behind an Archer C80 running in access point mode.  But everything was working fine using the old crappy Vodafone modem/router I had prior to upgrading to the vr1200v, nothing internal changed on the network other than the modem/router.

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Re:NAT Loopback / Reflection doesn't work on vr1200v
2022-05-25 14:51:48 - last edited 2022-05-25 14:52:37

just in case the previous message wasn't clear

 

(DSL) -- Vodafone modem -- Archer C80 -- server

 

worked fine

 

(DSL) -- vr1200v -- Archer C80 -- server

 

has problems

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Re:NAT Loopback / Reflection doesn't work on vr1200v
2022-05-26 09:29:18 - last edited 2022-05-26 09:48:38

  @Beak Hi, Thank you very much for the update.

Is your current firmware Archer VR1200v-v1-build 20220415? and is the modem provided by Vodafone or you purchase it by yourself?
Would it make any difference when the file server host connects directly to the VR1200v, bypassing the C80?


I am checking with the engineers now and If there is any further news, I will update you here as soon as possible.
Thank you very much.
Best regards.

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Re:NAT Loopback / Reflection doesn't work on vr1200v
2022-05-26 10:46:15

  @David-TP OK I have a relevant update.  I moved the server down to the office where the vr1200v is and it works properly when connected to that device.  I can hit it from inside the LAN either using the DDNS or the public IP.

 

I can't understand why it doesn't work when connected to the Archer C80 (when it used to work fine) but this does seem to indicate that the vr1200v is at least performing loopback.

 

Unfortunately it's not feasible to leave the server in that office because it's not my office :(  I will need to get it working from behind the Archer C80.  The C80 is in Access Point Mode w/DHCP off so I can't understand what the problem could be.  Any further help would be greatly appreciated.

 

The answers to your other questions are:

 

Is your current firmware Archer VR1200v-v1-build 20220415?

 

Yes.  The C80 also has the latest firmware 1.10.0 Build 210716 Rel.51301n(4555)

 

and is the modem provided by Vodafone or you purchase it by yourself?

 

bought it myself, dealing with Vodafone is like dealing with the phone company :)

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Re:NAT Loopback / Reflection doesn't work on vr1200v
2022-05-27 01:38:33

  @Beak 

Thank you very much and I would like to forward your case to the senior engineers.

Please check whether you could get an email from us later.

Best regards.

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