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I'm using Ubuntu Network Manager VPN client to connect to a PPTP vpn server.
I have an application that get some data from internet and must be runned from behind the VPN.
I need to suspend application process if VPN connection dropped.
How can I find out the VPN is connected/disconnected (script or command)?
Or is there a service that be able to call an script when VPN connected/disconnected?

Thanks

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You can ping your VPN gateway. So, if your gateway on the VPN is 172.16.1.1, the exit status of ping -c 1 -W 10 172.16.1.1 will tell you if you're connected. – Shawn J. Goff Apr 17 '12 at 11:57

1 Answer

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TorrentFreak had an article about things like that.

You could check out VPNCheck.

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