When developing an application, there might come a time where I would want to establish a secure connection like a vpn with a client. An iphone is the topic here. Once the user has established this, is all IP traffic routed when I suggest it do so? I'm curious about some open port or inspection of vpn traffic.
Is there any method available with the SDK to validate that no data has been sent "around" the route that I suppose the switch activates?
The problem is more of a question in the inherent security of the iPhone. If I say that all traffic should go through the vpn I've selected, is there anything buried in the API's or even the SDK that points to the base operating system (osx) being able to talk to another ip address without going through the proxy? If I am at a location using 3G and my app is using VPN to secure data, I have to make sure there is no backdoor or leakage that I have missed.