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SSH Tunnel — Three Modes
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SSH Tunnel — Three Modes
SSH isn't just for remote login — it can create encrypted tunnels. Three modes: local forwarding (-L), remote forwarding (-R), and dynamic forwarding (-D), each for different scenarios.
-L 本地转发
Client → Jump → Target
-R 远程转发
Jump → Client → Target
-D 动态转发
SOCKS5 over SSH
💻
localhost:8080
🖥
Jump Host
jump.example.com
🎯
db.internal:3306
🔒 SSH 加密隧道
TCP 流量 →
→ 转发至目标
ssh -L 8080:db.internal:3306 user@jump
← SOCKS5 Proxy Protocol
How VPN Works →