PPT-CSc 8222 Network Security

Firewalls WenZhan Song Cryptography and Network Security 1 The Need for firewalls Internet connectivity is no longer optional for organizations Individual users within the organization want and need Internet access. Intruders. WenZhan. Song. Cryptography and Network Security. 1. Intruders. Three classes of intruders:. Examples of Intrusion. Performing a remote root compromise of an e-mail server. Defacing a Web server. Access. Networks. Core Networks. The Current Internet: Connectivity and Processing. Transit Net. Transit Net. Transit Net. Private. Peering. NAP. Public. Peering. PSTN. Regional. Wireline. Regional. Voice. To protect assets!. Historically done through physical security and closed . networks.. Purpose of Security. With the advent of personal computers, LANs, and the wide-open world of the Internet, the networks of today are more open.. Jaime Castañeda . jaimec@juniper.net. Systems Engineering Manager. CALA – Enterprise.. INSANITY DEFINED…. Doing the Same Old Things & Expecting Different Results. Scalability?? . --> network . Why wireless?. Wifi. , which is short for wireless . fi. … something, allows your computer to connect to the Internet using magic.. -Motel 6 commercial. 2. … but it comes at a price. Wireless networks present security risks far above and beyond traditional wired networks. Access. Networks. Core Networks. The Current Internet: Connectivity and Processing. Transit Net. Transit Net. Transit Net. Private. Peering. NAP. Public. Peering. PSTN. Regional. Wireline. Regional. Voice. 8-. 1. Security in the layers. 8: Network Security. 8-. 2. Secure sockets layer (SSL). Transport layer security to any TCP-based app using SSL services. . Used between Web browsers, servers for e-commerce (https).. EECS710: Information Security. Professor Hossein Saiedian. Fall 2014. Chapter . 24: . Wireless Network Security. Wireless Security Overview. C. oncerns for wireless security are similar to those found in a wired environment. Why wireless?. Wifi. , which is short for wireless . fi. … something, allows your computer to connect to the Internet using magic.. -Motel 6 commercial. 2. … but it comes at a price. Wireless networks present security risks far above and beyond traditional wired networks. By Kelly Crancer. p. 328. Security. 670,000 account numbers and balances were seized by New Jersey mastermind.. Bank of America, Commerce Bancorp, PNC Financial Services Group, and Wachovia were the victims. 2. High. Risk. Medium Risk. Low Risk. Cost. Low. Medium. High. Used by. Universities. Companies & organizations. Military organizations. Vulnerability to attacks. High. Medium. Low. Security. Risk. The Benefits of Reading Books,Most people read to read and the benefits of reading are surplus. But what are the benefits of reading. Keep reading to find out how reading will help you and may even add years to your life!.The Benefits of Reading Books,What are the benefits of reading you ask? Down below we have listed some of the most common benefits and ones that you will definitely enjoy along with the new adventures provided by the novel you choose to read.,Exercise the Brain by Reading .When you read, your brain gets a workout. You have to remember the various characters, settings, plots and retain that information throughout the book. Your brain is doing a lot of work and you don’t even realize it. Which makes it the perfect exercise! The Security Problem. Program Threats. System and Network Threats. Cryptography as a Security Tool. User Authentication. Implementing Security Defenses. Firewalling to Protect Systems and Networks. Computer-Security Classifications. Introduction to Networks v7.0 (ITN). Module Objectives. Module Title: . Network Security Fundamentals. Module Objective. : . Configure switches and routers with device hardening features to enhance security..