- TCP segment is the payload of the IP packet. IP packet encapsulates the TCP segment.
-
一层层,套footer和header
- 两种写法,底层的写法(switch design)header在右边,software的写法(protocol)header在左边(IETF)
- VPN: (Eth, (IP, (TCP, (TLS, IP Packet)))),外层的TCP指向VPN gateway
一层层,套footer和header