07-06-2019 12:57 PM
Hi, I have an OpenVPN server running at home. I can connect to it fine, apart from when I am tethering from my EE phone.
I have tried moving from UDP 443 to TCP 443, but still I cannot connect. The TCP handshake goes through but then I get a reset that drops the connection. I can only think it must be some kind of DPI happening that is not allowing my VPN connection to complete.
I have phoned Technical Support, who don't know what OpenVPN is, but they disabled the adult filter. I have turned my phone off and on again, but the issue still persists.
07-06-2019 01:32 PM
I don't understand your set up. Need more description.
What type of BB system are you running at home?
From where can you connect to it fine?
What are you tethering to your phone?
07-06-2019 01:36 PM
Thank you ever so much for your help.
At home, I am running a TalkTalk modem connected to my pfSense firewall. I've had this setup for four years with openvpn running.
I have been able to connect to it with tethering from my previous mobile provider (Vodafone), and I can also connect from hotel wifi, coffee-shop wifi, etc. The only problem I have observed is when tethering from my EE phone.
I am on MacOS running Tunnelblick openvpn client
Hope this helps clarify things
07-06-2019 01:52 PM - edited 07-06-2019 01:55 PM
Sorry, I don't get where tethering comes into it. Aren't you just making a Net connection from your phone to your TT modem & onward to your server? The server isn't using the phone's mobile data to get itself onto the Net?
Or are you saying that you are trying to replace your TT BB connection by your phone's mobile network?
When you are in a coffee-shop you are not tethering to anything but just making a Net connection.
Is this just a terminology misunderstanding? Mobile tethering - The complete guide .
07-06-2019 01:56 PM
I think this might be getting unnecessarily overcomplicated. Let me describe a use case to help you understand
1. I am on a train, on my Macbook, and I want to connect in to my home network.
2. Tether from iPhone (EE) to Macbook.
3. Try and connect from Macbook to home network. [Does not work]
07-06-2019 02:03 PM
Ah, now I see! There's a lappy in the equation being tethered to your mobile for the purpose of getting on the Net.
How does the lappy address the home network?
07-06-2019 02:06 PM
Using dynamic DNS. My Mac completes a TCP handshake with my OpenVPN Server, but then receives a reset. Again, only happens when I am utilising the tethering from EE phone.
I have not yet done a packet capture on my server
07-06-2019 02:17 PM - edited 07-06-2019 02:18 PM
It might just be an EE IPv6 issue. Recently EE introduced IPv6 on its network, but it doesn't fall-back to IPv4 nicely. Can you change the Profile/APN on your EE devices to APN Protocol = IPv4 only?
07-06-2019 02:23 PM
@XRaySpeX Not possible on a iPhone unless you know how to create a profile to install on the device.
07-06-2019 02:35 PM
@Chris_B : Oh, was it an IPhone? I never noticed being more interested in the Internet connection. Pity!
07-06-2019 02:48 PM
07-06-2019 10:25 PM
What profile are you using on openvpn?
I use openvpn on EE network without any issues, so I wouldn't say it's an ipv6 issue, unless this is an Apple issue (I use Android).
07-06-2019 10:35 PM - edited 07-06-2019 10:38 PM
@Northerner : The OP is running the OpenVPN server on the TT BB network, which is IPv4 only, & accessing it from an EE mobile which is using IPv6 but doesn't fallback to IPv4 well.
I think you are running a OpenVPN client on your EE mobile, which is a different kettle of fish.
07-06-2019 11:07 PM
I know so do I. The app allows you to specify the ipv4 or 6 ip address but I suspect the setting is set to pull the info from the server which is conflicting if their home BB is v4 only. That saidy my Sky internet is 4 not 6, and as I said, I have no issues on EE connecting to my home network via EE V6 or my VPN service which is v6.
07-06-2019 11:35 PM
@Northerner : Are you running a VPN server on your home Sky BB network?
08-06-2019 04:48 AM
@windyboi : As an experiment to confirm or otherwise my theory about EE & IPv6 how about getting a £10 EE PAYG SIM, putting it in your iPhone & see if that can do what you wanna do in accessing your home VPN server from your tethered lappy? EE PAYG does not use IPv6.
10-06-2019 09:56 AM
Hi, thanks for replies. Based on this info, I'm going to allow ipv6 on my firewall as it is currently blocked, and see what happens. Will report back
10-06-2019 12:05 PM
Thanks! You're welcome 🙂 ! Glad I could be of assistance.
by max1486 Tuesday