iosvpn
I connect to a bunch of WiFi hot spots with my iPhone, and love that I have a VPN option.
One thing I don't love is that it disconnects from the VPN if the screen ever goes blank.
How can I keep the VPN connected so I don't have random emails or other data in the open for man-in-the-middle attacks?
I was getting the same error. In my case it turned out to be a conflict with "Back to My Mac"—specifically within my Airport Extreme. Once I removed my iCloud user account from the Airport Extreme, OS X Server's VPN started responding.
If there are any Airport Extreme/Express devices on your network, definitely remove any iCloud/MobileMe accounts using Airport Utility.
You may also have Back to My Mac turned on in System Preferences—and it's conceivable that could cause a problem as well...
I recommend (at least temporarily) checking that no user accounts have Back to My Mac enabled in the iCloud pane of System Preferences; I would verify this on every user account on every Mac on your network.
Good luck!
Turns out the missing VPN switch had nothing to do with which connection was used. What seems to have happened is that all the VPN profiles were deleted. When that happens, the VPN switch seems to disappear. To check for or create a new VPN profile, go to settings->general->network->VPN:
Once you create a VPN profile, the VPN switch reappears in the root of the settings screen:
Best Answer
According to this thread this is standard for most users. But there is Jailbreak solution with external app called Insomnia
Downside of this is your cpu etc is still running so battery will go down quickly.
There is also a tweak for Cisco VPN with SBSetting with Jailbreak that might work for non-Cisco software (as in the built-in VPN) but as I haven't tested it it's hard to say :-) It may be that the blog mentions the built-in VPN but I can't verify it myself. It's not clear whether it mentions Cisco app or the built-in VPN (and just names it Cisco VPN).