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How To connect a Deco X50 5G with a Fritzbox 7490 with WireGuard as Router <-> Router Connection

How To connect a Deco X50 5G with a Fritzbox 7490 with WireGuard as Router <-> Router Connection

How To connect a Deco X50 5G with a Fritzbox 7490 with WireGuard as Router <-> Router Connection
How To connect a Deco X50 5G with a Fritzbox 7490 with WireGuard as Router <-> Router Connection
2025-07-05 14:26:18 - last edited 2025-08-06 08:04:45
Tags: #Network Connectivity #WireGuard
Model: Deco X50-5G  
Hardware Version: V1
Firmware Version: Current

I want to connect a Deco X50G with a Fritzbox. Currently i configured the X50-5G as VPN Client which works, but only one way...

 

i can ping my systems at home, but i cannot ping devices in the x50 network.

 

is there any how to avaiable?

 

connecting to fritzbox is a no-brainer with wireguard. i guess it's only a smal thing.

 

configuring deco as VPN server leads to a config, which is refused by fritzbox to be imported...

 

what i want to do is the following

 

deco x50g with local internet link, fritzbox at home with local internet uplink, both sould establish a wireguard connection, so that all devices on both sites can reach each other. with two fritzboxes this works fine. the question is how to configure it between deco and fritzbox

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2 Accepted Solutions
Re:How To connect a Deco X50 5G with a Fritzbox 7490 with WireGuard as Router <-> Router Connection-Solution
2025-07-29 10:00:56 - last edited 2025-08-06 08:04:45

  @SvenKoehler 

Hi, thank you very much for your feedback.

Deco doesn't support site-to-site VPN.

So when Deco X50-5G is set as the WireGuard VPN clients, the selected devices can access the local network of Fritzbox, but not the other way around.

I think your Deco X50-5G uses CG-NAT, and the current IPV4 address is a reserved IP address. When it was configured as the WireGuard VPN server, it was behind the NAT firewall of the SIM carrier.

Best regards.

 

 

▶Check What's Currently Going on With Deco ▶Parental Control Upgrade on HomeCare Models ▶Deco BE85 1.2.0 Enhanced Mesh Backhaul Stability and Device Roaming Experience ▶Deco BE65/BE65 Pro 1.2.0 Enhanced Mesh Network Stability and System Security ▶Deco BE75 1.1.0 Added WireGuard VPN, Manual Channel Selection and More Try to leave a Message if urgent help is required.
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Re:How To connect a Deco X50 5G with a Fritzbox 7490 with WireGuard as Router <-> Router Connection-Solution
2025-09-06 19:59:35 - last edited 2025-09-06 20:08:47

  @David-TP the gl inet x-3000 5G router supports it, i chose deco because of it other awesome features. can you put it on the wishlist...?

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Re:How To connect a Deco X50 5G with a Fritzbox 7490 with WireGuard as Router <-> Router Connection-Solution
2025-07-29 10:00:56 - last edited 2025-08-06 08:04:45

  @SvenKoehler 

Hi, thank you very much for your feedback.

Deco doesn't support site-to-site VPN.

So when Deco X50-5G is set as the WireGuard VPN clients, the selected devices can access the local network of Fritzbox, but not the other way around.

I think your Deco X50-5G uses CG-NAT, and the current IPV4 address is a reserved IP address. When it was configured as the WireGuard VPN server, it was behind the NAT firewall of the SIM carrier.

Best regards.

 

 

▶Check What's Currently Going on With Deco ▶Parental Control Upgrade on HomeCare Models ▶Deco BE85 1.2.0 Enhanced Mesh Backhaul Stability and Device Roaming Experience ▶Deco BE65/BE65 Pro 1.2.0 Enhanced Mesh Network Stability and System Security ▶Deco BE75 1.1.0 Added WireGuard VPN, Manual Channel Selection and More Try to leave a Message if urgent help is required.
Recommended Solution
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#2
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Re:How To connect a Deco X50 5G with a Fritzbox 7490 with WireGuard as Router <-> Router Connection-Solution
2025-09-06 19:59:35 - last edited 2025-09-06 20:08:47

  @David-TP the gl inet x-3000 5G router supports it, i chose deco because of it other awesome features. can you put it on the wishlist...?

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#3
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Re:How To connect a Deco X50 5G with a Fritzbox 7490 with WireGuard as Router <-> Router Connection
2025-09-06 20:08:33

  @David-TP 

 

moreover - what would you recommend as alternative mitigation until this feature will come? i recommend to implement it

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Re:How To connect a Deco X50 5G with a Fritzbox 7490 with WireGuard as Router <-> Router Connection
2025-09-09 07:54:26

  @SvenKoehler 

Hi, thanks for the update.

Currently, our Home-used routers all only support Client-to-LAN VPN server/Client.

Maybe you can consider the Business 4G/5G models, such as:

https://www.omadanetworks.com/en/business-networking/omada-router-4g-wifi-router/

 

Thank you very much.

Best regards.

 

▶Check What's Currently Going on With Deco ▶Parental Control Upgrade on HomeCare Models ▶Deco BE85 1.2.0 Enhanced Mesh Backhaul Stability and Device Roaming Experience ▶Deco BE65/BE65 Pro 1.2.0 Enhanced Mesh Network Stability and System Security ▶Deco BE75 1.1.0 Added WireGuard VPN, Manual Channel Selection and More Try to leave a Message if urgent help is required.
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Re:How To connect a Deco X50 5G with a Fritzbox 7490 with WireGuard as Router <-> Router Connection
2025-09-30 08:57:48
i think, you should put it in the wishlist, as other vendors like avm support it...
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#6
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Re:How To connect a Deco X50 5G with a Fritzbox 7490 with WireGuard as Router <-> Router Connection
a week ago - last edited a week ago

  @David-TP 

 

I tested now with a cloud router (ipv64.net) - when i import the wg.config from there, the deco app refuses ipv6 adresses. so i remove them, but when deco connects to the cloud router, it uses ipv6... so i think - the whole wireguard thing is mixed up

 

This is the config (the bold underlined part must be deleted in the app after scanning the qr-code

 

[Interface]
Address = 10.7.0.2/32,fd64::2/128
PrivateKey = xxx
DNS = 86.54.11.100

[Peer]
PublicKey = xxx
PresharedKey = xxx
AllowedIPs = 10.7.0.0/24
Endpoint = srv03 vpn64 de:51737
PersistentKeepalive = 15

 

When i look up connections, i see ipv6 address, but deco refuses them in the app

 

 

 

i uses this service as a central instance as fritzbox and deco are clients then to connect them

 

you can test it by your self ipv64 net - 2 peers are free of charge - so configure one windows pc and one deco

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