Network Model
Open Systems Interconnection
Internet Protocol Suite
Transport Layer
不同协议的端口位于不同的命名空间下
[ c822 1f90 0064 0000 ... ]
[ c822 1f90 0064 0000 ... ]
[ 51234 8080 100 0 ... ]
[ 51234 8080 100 0 ... ]
为什么是 512bytes 而不是 65535bytes?
Maximum transmission unit and Maximum segment size
以常见的 1500 为例
TCP
UDP
Peer to Peer
Peer to Peer
注册端口
动态端口
Network Address Translation
const pc = new RTCPeerConnection({ iceServers: [ { urls: ["stun:******", "stun:******"], }, { urls: "turn:******", username: "******", credential: "******", }, ], });
const pc = new RTCPeerConnection({ iceServers: [ { urls: ["stun:******", "stun:******"], }, { urls: "turn:******", username: "******", credential: "******", }, ], });
Session Traversal Utilities for NAT
Firewall
普通防火墙具备记忆性
→ sudo ufw status verbose Status: active Default: deny (incoming), deny (outgoing), disabled (routed) To Action From -- ------ ---- 22 ALLOW IN Anywhere 80 ALLOW OUT Anywhere
→ sudo ufw status verbose Status: active Default: deny (incoming), deny (outgoing), disabled (routed) To Action From -- ------ ---- 22 ALLOW IN Anywhere 80 ALLOW OUT Anywhere
STUN Server and Signalling Server
打洞有可能失败吗?
Traversal Using Relays around NAT