Android App Not Working Over OpenVPN - Any suggestions

saltyg

Hello,

I am new to using OpenVPN, so this might be a basic question, but I hope someone might know the answer and can assist me.

I am using a Linksys WRT1900AC Router, that supports OpenVPN Server - it is enabled, using TCP Protocol
I have a Samsung Galaxy S3 - that I have installed OpenVPN Android software on. It Connects just fine and appears to establish a connection.

I have a device on the Remote Network, that I would like to access with an Android App.

It is an Integra Home Theater receiver on 192.168.1.70. The Android App in "Integra Remote" - it allows you to control the stereo with the android app.

When my Samsung phone is on the Local Wifi of the Integra receiver, the Android App works just fine. The app starts up, says searching for device, finds the receiver in about 5 seconds and connects to it.

When I am remote and connect my phone via OPENVPN, I can Ping the receiver, I can even open a browser to 192.168.1.70 and make settings on the receiver. So I know I am on the network.

However, the Integra Remote starts up and just goes for about 30 seconds and says searching, searching, then says it can not find any receiver to control. So apparently, the Integra remote android app is either using a different protocol, or method that is not able to see the device over OpenVPN.

Are there any settings or configurations that I can make to OpenVPN? I am not sure the Linksys Router has any settings available.
ANy thoughts would be appreciated. Thank you.

saltyg

One update. I can tell that the receiver is listening on port 80 (web server that I can get to) and also port 8888 Sun Answerbook Gnump3d Or something like that. My guess is the android app is trying to connect or scan or look for a response on port 8888, but OpenVPN may not be allowing that. Does this help anyone give me suggestions? Thank you.

Traffic

saltyg wrote The Android App in "Integra Remote"

I suspect this app is using broadcast packets on your LAN to discover your integra device ..

Openvpn in Tunnel mode (--dev tun) does not support broadcast packets so the app will probably not work over your vpn.