Thanks for the help. I've been in China (Guangzhou) for over a year and have had little trouble using AirVPN with the default settings. Since Friday I haven't been able to connect at all however. (Incidentally the BBC News is blocked now too which it hasn't been for years.) Changing to protocol UDP port 443 I'm now able to connect on my computer.
I'm still having trouble with my mobile connection however. I'm not sure how to change these settings in the OpenVPN app (not very technically literate I'm afraid...) but it seems I was already using UDP 443 and now that's not working.
On your Android or iOS device you need to re-generate a configuration file and import it as a profile in your application (openvpn-connect, OpenVPN for Android...).
Try the following settings:
- click "Advanced Mode" in the Configuration Generator
- select protocol TCP, port 443, entry-IP address 3
- proceed as usual to download / import the profile
On entry-IP addresses 3 and 4 of our VPN servers you have OpenVPN working with "tls-crypt". It means that the whole Control Channel of OpenVPN is encrypted. This connection mode has showed great abilities to bypass a wide variety of blocks. In this case we also suggest TCP because, according to the reports we have been receiving from China in the last years, it is not uncommon that UDP gets entirely blocked on mobile lines.
UPDATE: with our software Eddie Android edition, you will not need the Configuration Generator anymore in Android. Eddie will try by itself anti-blocking connection modes. If you don't wish to wait (Eddie may need up to 1 minute to find the proper way to circumvent China blocks). go to the "Settings" view and please set:
- Custom protocol option to TCP
- Custom port to 443
- Custom TLS mode to tls-crypt
- Quick connection mode to Use custom settings
Eddie will connect to port 443, with protocol TCP, using tls-crypt.