Two things-layer-7 proxy mode or IP-layer VPN

Two things-layer-7 proxy mode or IP-layer VPN
1. many people may ask whether I use the proxy mode or the VPN mode, if I want to encrypt and protect data on an insecure link.

Please refer to the incorrect method. The urine will not fall into the stool pool, but on the squatting position. Sometimes, if the angle is not aligned, the stool will not fall into the pool, but on the other side of the squatting position, this will cause a chain reaction. Later, people can only use the same side of the incorrect way, because the other side of the pool has shit .. as a result, Uncle Li, our dormitory administrator, can no longer help it. He wrote a few big words on the Xuan paper with a brush and posted them on the walls of the men's toilet, which said, "The stool is in the ditch and then in the ditch ", yes, handwriting is good...