From 2c8e932a34b2c84eb48d23dbf7ffcb78f4a5fbdc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=90=B4=E5=A8=81=E9=9C=86?= <2214508616@qq.com>
Date: Thu, 24 Apr 2025 22:50:30 +0800
Subject: [PATCH] 1

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+# 笔记
+
+##  一.标准ACL语法
+
+#### **1. 创建ACL**
+
+```bash
+access-list <编号> <动作> <源IP> <通配符掩码> 
+# 编号范围 1-99
+# 动作：permit 允许 、 deny 拒绝
+```
+
+#### **2. 示例**
+
+```bash
+access-list 10 permit 192.168.1.0 0.0.0.255  # 允许192.168.1.0/24g整个网络
+access-list 10 permit 192.168.10.2   # 允许192.168.10.2单个IP通过
+access-list 10 deny any                      # 拒绝其他所有流量
+```
+
+#### **3. 应用ACL**
+
+```bash
+# 语法分两步骤
+# 步骤1：先选择要应用ACL的端口 如 interface g0/0
+# 步骤2：通过ACL编号及方向来应用ACL，格式如下
+ip access-group <编号> <方向>    #
+# 方向 in / out 代表流量流入/流出路由器的方向
+# 示例：
+interface GigabitEthernet0/0				 # 第一步，进入G0/0端口 
+ip access-group 10 in   					 # 第二步，在G0/0端口的入口方向应用编号为10的ACL
+```
+
+![Snipaste_2025-04-24_09-59-45](https://gitee.com/wwwt006/bed/raw/master/images/202504242249325.png)
+
+# 二.作业及练习
+
+
+
+![Snipaste_2025-04-24_10-09-41](https://gitee.com/wwwt006/bed/raw/master/images/202504242250519.png)
+
+```cmd
+Router>en
+Router#conf t
+Router(config)#access-list 10 permit 192.168.10.1
+Router(config)#access-list 10 deny any
+Router#conf t
+Router(config)#interface g0/1
+Router(config-if)#ip access-group 10 in
+Router(config-if)#
+
+Router>en
+Router#conf t
+Router(config)#access-list 10 permit 192.168.20.0 0.0.0.255
+Router(config)#access-list 10 deny any
+Router(config)#interface g0/1
+Router(config-if)#ip access-group 10 in
+Router(config-if)#
+```
+
+
+
+![Snipaste_2025-04-24_10-33-43](https://gitee.com/wwwt006/bed/raw/master/images/202504242250539.png)
+
+```cmd
+路由器3
+Router>en
+Router#conf t
+Router(config)#access-list 10 permit 192.168.10.1
+Router(config)#access-list 10 deny any
+Router(config)#interface g0/2
+Router(config-if)#ip access-group 10 out
+Router(config-if)#
+
+路由器1
+Router>en
+Router#conf t
+Router(config)#access-list 10 permit 192.168.30.1
+Router(config)#access-list 10 deny any
+Router(config)#interface g0/2
+Router(config-if)#ip access-group 10 out
+Router(config-if)#
+
+路由器5
+Router>en
+Router#conf t
+Router(config)#access-list 10 permit 192.168.20.2
+Router(config)#access-list 10 deny any
+Router(config)#interface g0/0
+Router(config-if)#ip access-group 10 out
+Router(config-if)#
+
+路由器4
+Router>en
+Router#conf t
+Router(config)#access-list 10 permit 192.168.10.1
+Router(config)#access-list 10 deny any
+Router(config)#interface g0/0
+Router(config-if)#ip access-group 10 in
+Router(config-if)#
+```
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-- 
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