The log said: "Tunnel established, no data flow."
The E5172 was now a bridge to a secret network. Every byte I sent was wrapped in encryption, buried in the L2TP tunnel, armored with IPSec. To the local tower, I was just noise. To the observer in the capital, I was invisible. Configure VPN on HUAWEI E5172
I opened a terminal. Pinged the outside server: 64 bytes from ... ttl=52 time=187ms . High latency. But clean. No loss. The log said: "Tunnel established, no data flow