# 💡Summary > [!Info] > 网络层压根没有端口这个概念 > ![image.png|1000](https://imagehosting4picgo.oss-cn-beijing.aliyuncs.com/imagehosting/fix-dir%2Fpicgo%2Fpicgo-clipboard-images%2F2026%2F02%2F01%2F01-36-39-b310eccb4ba8f690147b407217c0467e-202602010136035-a4d59a.png) # 🧩 Cues # 🪞Notes