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所在平台: Udemy |
课程主页: https://www.udemy.com/course/advanced-acl-nat/
课程评论：没有评论
**Coursera 课程总结：高级 ACL 与 NAT** 本课程旨在深入讲解网络中两个核心概念：高级访问控制列表（ACL）和网络地址转换（NAT）。课程分为两个模块，内容丰富且注重实际应用。 **第一模块：高级访问控制列表 (ACLs)** 本模块将全面介绍 ACL 的高级主题，包括： * **Established ACLs**: 讲解如何基于连接状态来控制流量。 * **Dynamic ACLs**: 探讨如何根据特定条件（例如时间或访问权限）动态改变 ACL 策略。 * **Time Based ACLs**: 学习如何根据预设的时间表来启用或禁用 ACL 规则，实现定时访问控制。 * **Reflexive ACLs**: 介绍如何根据会话信息来允许或拒绝响应流量，从而实现更精细的安全控制。 **第二模块：网络地址转换 (NAT)** 本模块将深入剖析 NAT 的原理、必要性及不同类型。课程内容具有厂商无关性，适用于各种网络设备和平台。 * **NAT 的基本原理**: 解释 NAT 的工作机制，以及数据包在转换过程中发生的变化。 * **NAT 的类型**: * **静态 NAT (Static NAT)**: 讲解如何将一个私有 IP 地址永久地映射到一个公共 IP 地址，实现一对一的固定转换。 * **动态 NAT (Dynamic NAT)**: 介绍如何将私有 IP 地址映射到一个公共 IP 地址池中的地址，实现一对多的动态转换。 * **端口地址转换 (PAT)**: 详细讲解 PAT（也称为 NAPT 或 NAT Overload），这是动态 NAT 的一种特殊形式，它允许多个私有 IP 地址共享一个公共 IP 地址，通过不同的端口号进行区分。这在企业网络中非常常见，可以有效地节省公共 IP 地址资源。 **重要提示：** 本课程为录制视频课程。建议在正式开始学习前，先观看提供的示例视频，以评估视频的音频质量、长度以及内容是否符合您的学习需求。
Before you join:*This video series is a recorded class. Please view the sample videos to validate if this will work for you*Verify audio quality from sample videos to validate if it works for you*Verify the length of the videos to validate if it works for youThis course has two modules.The first module will teach you Everything there is to know about Advanced Access control Lists: The first module will talk about concepts like Established ACL's, Reflexive ACL's, Dynamic ACL's and Time Based ACL's.Established ACL'sDynamic ACL'sTime Based ACL'sReflexive ACL'sThe first module will teach you Everything about the Network Address Translation. Why it exists, How it it works, What happens to packets as they get translated. This module will explain every type of translation: Static NAT, Static PAT, Dynamic PAT, and Dynamic NAT. You'll learn about each of these in a way that is completely vendor agnostic - the concepts you learn here will apply to any vendor and any platform.NAT TypesThere are three different types of NATs. People use them for different reasons, but they all still work as a NAT.1. Static NATWhen the local address is converted to a public one, this NAT chooses the same one. This means there will be a consistent public IP address associated with that router or NAT device.2. Dynamic NATInstead of choosing the same IP address every time, this NAT goes through a pool of public IP addresses. This results in the router or NAT device getting a different address each time the router translates the local address to a public address.3. PATPAT stands for port address translation. It's a type of dynamic NAT, but it bands several local IP addresses to a singular public one. Organizations that want all their employees' activity to use a singular IP address use a PAT, often under the supervision of a network administrator.
