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Hello, I'm Tim and have over 15 years of experience with eBay, Google, and the Department of Defense.Please tell me more about your problem, the more detail the better? Is this a work VPN? Personal?
My name is David.
It seems that Tim may not be available. Do you still need further assistance?
So just to clarify, it does not work when you are connecting your laptop to the Internet through your iPhone or when you are connecting to your VPN through your iPhone?
Yes, so certain VPN technology prevents routing loops in the VPN by preventing a connection from the point of origin back to the same network.
So have you tried VPN through your iPhone from a different network? One way to test that would be to disconnect your iPhone from your local WiFi network and then VPN from the laptop through your iPhone data network connection. If you have not tried that please try it now and let me know the result.
The IP address of the computer's network interface used to connect the VPN, the VPN virtual network interface on the computer, and the LAN IP address range must be different in order for the VPN to work. So to test you would need to connect the computer to the iPhone as a hotspot using an IP address such as 10.0.0.2, then connect to the VPN where the VPN virtual adapter has an IP address such as 172.16.0.5, and the local area network with a subnet address range of 192.168.0.1-10 would work.
That IP address should work as long as the VPN IP addresses are not also in the 172.16.x.x range. So when the laptop connects to the VPN through the iPhone make sure the laptop is not connected to the local network, then please let me know what IP address is assigned to the VPN virtual interface on the laptop.
If using Windows 8 or 10 first connect to the VPN then right click the Windows Start button then click the Search field and type
in the Search field and right click on the command terminal icon that appears and click Run as Administrator. Then on the command line type
and press Enter. Scroll through the information and look for the VPN virtual adapter and below the name of the adapter you will see the IP address assigned to the virtual adapter when the computer is connected to the VPN.
My apologies for the delay and thanks for the additional information.
Since the VPN gives out an IP address in the same subnet range as your home local area network, that would explain why the laptop cannot connect to the VPN while connected to your local area network.
So just to clarify...
Your home local area network IP address range is 192.168.0.x
The VPN IP address range is 192.168.0.x
The iPhone gives the laptop an IP address in the range of 172.20.10.x
What IP address range does your friend's local network assign to the laptop?
Ok thanks for the clarification.
And when the laptop connects to the iPhone it is connected only to the iPhone wireless hotspot and to no other networks correct?
When the computer connects to the iPhone is the iPhone WiFi disabled?
What mobile wireless carrier does the iPhone use?
Ok thanks. Assuming at least 1 GB of data on the plan O2 should not block tethering.
The hotspot connection works without the VPN?
Ok thanks - just a moment...
I am still reviewing the VPN service on the router to determine whether or not the protocols it uses for the VPN connection could cause the issue.
The iPhone data connection is not encrypted or using a VPN connection correct?
Ok, so change the IP address range that the VPN server provides to 10.0.0.1 - 10.0.0.20. Then save the setting and then try connecting to your network using the VPN through the iPhone and let me know the result.
If you need assistance changing the IP address range on the VPN just let me know.
I can also provide remote assistance to help in changing the router configuration if needed - just let me know.
Yes I would recommend changing the VPN server range as well because it is less common and less likely to cause issues.
Yes, change the IP address range for the VPN to that setting. The router should perform routing between the VPN IP address range and the LAN subnet.
Regarding the concern about PPTP and iOS I have heard that as well however there is no definitive evidence. I will check into it and get right back to you.
Ok so it seems the router is bridging rather than routing which means that the new IP address range will not work. So go ahead and change the IP address range on the VPN back to the original range. I will provide you with a remote assistance link you can use in a moment to start the remote assistance connection.
Yes, however lets try the JustAnswer remote assistance program first. Please click on the link below, then scroll to the bottom of the page and click I Agree, then let the program download then double click on the program to start it if it does not start automatically: