NAT Hairpin: Source IP Address is WAN IP Address?

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NAT Hairpin: Source IP Address is WAN IP Address?

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movinrightalong

2024-03-30 04:21:03

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Registered: 2024-03-30

NAT Hairpin: Source IP Address is WAN IP Address?

2024-03-30 04:21:03

Tags: #Port Forwarding

Model: Deco X55

Hardware Version:

Firmware Version: 1.2.0 Build 20231229 Rel. 43148

Hello,

I use the NAT hairpin feature of the router and have noticed that when packets arrive at the destination, the source IP is set to the public IP of the network rather than to the local gateway IP address. My previous router was a Google Wifi, and it set the source IP to the gateway address, which allowed me to detect the packets were arriving over LAN.

Is there any way to change this behavior?

Thanks.

1 Reply

David-TP

2024-04-01 07:42:44

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Registered: 2020-04-14

Re:NAT Hairpin: Source IP Address is WAN IP Address?

2024-04-01 07:42:44

@movinrightalong

Hi, welcome to the community.

Honestly, I think it is right that the WAN IP should be the source IP. If the source IP is set to a LAN gateway, there is no need to pass any NAT and we don't need NAT Loopback anymore.

Thank you very much and best regards.

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NAT Hairpin: Source IP Address is WAN IP Address?

NAT Hairpin: Source IP Address is WAN IP Address?

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