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IP Routing

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Tham khảo bài thuyết trình 'ip routing', công nghệ thông tin, an ninh - bảo mật phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | IP Routing IP Routing - SANS GIAC LevelTwo 2000 2001 1 After completion of this webcast the student will have a good foundation of how packets are routed across IP networks. First we will examine the concept of static routing that most hosts use to decide how to send traffic originating from the local host. We will also briefly introduce the Ethernet protocol since the majority of the IP network traffic is routed using this link layer medium. Much of the traffic that needs to be routed is between hosts on the same physical network and that is where the link layer comes into play. Routing protocols provide the basis by which information is transferred between hosts on the Internet. We ll look at these protocols that provide for dynamic routing. They are divided into major categories based on a specific operating environment. Besides explaining these various environments we will examine their potential strengths and weaknesses. Furthermore we will attempt to provide a basic overview of how the different protocols are susceptible to attack and how some of these threats can be mitigated through simply router configuration changes. 9 - 1 Objectives Static Routing - Sending packets from the local host Address Resolution Protocol ARP - Getting packets from hop to hop - Examples of malicious activity IP Options - Loose source routing - Strict source routing Dynamic Routing Protocols - Interior Gateway Protocols - Exterior Gateway Protocols IP Routing - SANS GIAC LevelTwo 2000 2001 2 The Objectives slide outlines the different topics that we will be covering. First we will look at static routing which hosts employ to send traffic. Then we ll examine the protocols involved in the transmission of packets on the local network. This will be followed by a discussion of IP options and how they can be used to alter the course of packets as they travel toward their destination. Then various protocols that govern how packets traverse IP networks will be investigated. Specifically we

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