---
# System prepended metadata

title: ACL
tags: [高速網路]

---

---
tags:  高速網路
title: ACL
---
# ACL
- ACL 是一組有序的規則，可用於過濾流量。每個規則指定一組條件，封包必須滿足這些條件才能匹配該規則。
![](https://i.imgur.com/AH9Zwih.png)
![](https://i.imgur.com/O4vAjKA.png)
![](https://i.imgur.com/EgHk7la.png)
![](https://i.imgur.com/25TXMIs.png)
- 可以減寫成any
![](https://i.imgur.com/Uul4Umy.png)
- ACL會依照編號順序來判斷
- ACL 部屬到介面上
![](https://i.imgur.com/30WHdsx.png)
- in
    - 封包流量進來router
- out
    - 封包流量離開router
---
# 建立擴充的ACL
![](https://i.imgur.com/6dEwkHC.png)
![](https://i.imgur.com/x1HIl6A.png)
![](https://i.imgur.com/NgWknVV.png)
![](https://i.imgur.com/U3LtM8W.png)
![](https://i.imgur.com/SyQxUG6.png)
