Connect to ESPAsyncWebServer / ArduinoOTA / Services on ESP32

[itsyoshio]

Hi, i'm using the Example code and Outbound connections work well.

I've successfully pinged my Router (also the Wireguard Server) and used the WiFiClient to fetch a Website on my Wireguard Network over HTTP.

The ESP32 i use as the Wireguard Client also runs a ESPAsyncWebServer (port 80) and ArduinoOTA (port 32537).

I can't ping it, i can't access the Webserver and OTA Updates also don't work within the VPN, but do run over Ethernet or Wifi directly.

Any help would be appreciated.

[Shinmera]

I'm having the same issue using the standard esp_http_server. Outbound is OK, inbound ends up with unreachable address.

Is there some kind of routing we have to perform to make sure the packets arrive at the correct place?

[MrKappa]

Have you in the Peer's allowed IPs the IP or the subnet containing your interface IP address?

[Shinmera]

In my case yes. I'm using exactly the same configuration as for every other client in the net, and the rest work just fine.

[MrKappa]

In my case yes. I'm using exactly the same configuration as for every other client in the net, and the rest work just fine.

Is your device wg ip pingable? If yes, looks like the problem could be that the service isn't listening/binding to the wg created interface. Can you try to start the tunnel and then initialize/start your services? Otherwise I'd look how those services bind to the network interfaces.

[Shinmera]

In my case yes. I'm using exactly the same configuration as for every other client in the net, and the rest work just fine.

Is your device wg ip pingable? If yes, looks like the problem could be that the service isn't listening/binding to the wg created interface. Can you try to start the tunnel and then initialize/start your services? Otherwise I'd look how those services bind to the network interfaces.

Pinging the local IP of the ESP works fine, but if I ping the WireGuard VPN IP, it says that the destination host is unreachable.

I thought to try and ping something from the ESP first, like the WireGuard server, but that also fails, so it just seems to me like it's not establishing the connection properly at all? I can ping that same VPN IP fine from another computer.

E: interestingly, after the wg.begin I also can't seem to fetch ntp data anymore either, it just hangs on that. Fun.
E2: Tried using https://github.com/ciniml/WireGuard-ESP32-Arduino and specifying a specific 255.255.255.0 subnet, and updated the ESP32 library to 3.0.0, but that also didn't help. Still much the same behaviour.