✅ 分辨 NAT 4 個 address definition:
1️⃣ Inside Local Address
2️⃣ Inside Global Address
3️⃣ Outside Local Address
4️⃣ Outside Global Address
✅ 用 NAT 達成 Public IP 共享
✅ 用 NAT 達成 Server Load Balancing
https://www.jannet.hk/zh-Hant/post/network-address-translation-nat/