Does the C4000 V2 support Hairpin / Loop Back NAT? If so, how?

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Does the C4000 V2 support Hairpin / Loop Back NAT? If so, how?

This thread has been locked for further replies. You can start a new thread to share your ideas or ask questions.
Does the C4000 V2 support Hairpin / Loop Back NAT? If so, how?
Does the C4000 V2 support Hairpin / Loop Back NAT? If so, how?
2019-12-24 21:47:21
Model: Archer C4000  
Hardware Version: V2
Firmware Version: 1.1.1 Build 20190827 rel.78773(5553)

I have a client on my local LAN behind my NAT device (the Archer C4000) that I would like to access another machine on the same LAN via the external IP address of the LAN/router (with port forwarding/Virtual Server set up on the router to direct requests to the appropriate machine on the LAN).  This worked with my old Archer C7, which unfortunately is no longer in service.

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7 Reply
Re:Does the C4000 V2 support Hairpin / Loop Back NAT? If so, how?
2019-12-27 00:24:33

@esc 

I had the exact same issue and I fixed it by setting the DNS on the router to google.

 

Advanced -> Network -> Internet -> Advanced -> Use the Following DNS Address

Primary: 8.8.8.8

Secondary 8.8.4.4

 

Hope it helps.

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Re:Does the C4000 V2 support Hairpin / Loop Back NAT? If so, how?
2019-12-27 00:51:44

i've been using 8.8.8.8 and 8.8.4.4 for years before the switch to the c4000.  Sorry, no help there.

 

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#3
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Re:Does the C4000 V2 support Hairpin / Loop Back NAT? If so, how?
2020-01-12 18:23:36
So, I had my router updated and with the google dns and everything was working super, until the router lost WiFi and I could not get it to work. Returned it to the store. Got a new one, and guess what, my solution doesn’t work on the new router (old firmware, I won’t dare to update it again.). I’ve tried many different solution on my server but can’t get it to work again. Let me know if you got it. :( Best Regards
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Re:Does the C4000 V2 support Hairpin / Loop Back NAT? If so, how?
2020-01-13 05:15:22 - last edited 2020-01-13 05:17:29

@GusX3 

I still have not gotten Hairpin NAT to work.  I know name resolution is working correctly because I have done many trace routes and they are correct.

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#5
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Re:Does the C4000 V2 support Hairpin / Loop Back NAT? If so, how?
2020-01-23 05:59:38

@esc 

Well, I got it working with another dumb solution. I set up my old TP-Link Archer C1200 (Router I had before, which all worked correctly) on Access Point Mode, connected it to port 4 on the AC4000, and then, hooked up my server to the AC1200 (wifi or eth0). That solved most of my problems. :)

If you find something easier please let me know.

Best Regards.

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#6
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Re:Does the C4000 V2 support Hairpin / Loop Back NAT? If so, how?
2020-02-29 21:35:45

i just purchased this c4000 today . if it does not support nat loopback its going back to the store .

 

i have no use for a router that does not support something so simple .

 

ill give support till monday to answer .

 

 

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#7
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Re:Does the C4000 V2 support Hairpin / Loop Back NAT? If so, how?
2020-04-06 04:38:22

It's mind boggling that such a simple thing is not supported. It ruined all my home setup because of such a minor feature.

I guess my 6 year old R7000 is going back out from the closet and the C4000 back to the store.

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