Network Security

Oct 02, 2013

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Overview. Network Security is not an option.I have nothing to hide.Why should I care?Why do I need security?What types of security do I need?How valuable is the data I'm protecting?. The risks are real. Viruses, Spyware and MalwareMultiple points of entryWorms and RBL BlacklistingTrojan

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Network Security

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Network Security

Network Security. Section 1: Introduction to security. What is Security?. SIMPLE BUT HARD TO DO !. What is the biggest enemy for humans ? H U M A N S ! We need security until the people with bad minds exists! What is the best solution for security ? No high-tech hardware

487 views • 13 slides

Network Security

Network Security. Jiuqin Wang June, 2000. Security & Operating system. To protect the system, we must take security measures at two levels: Physical level: The site or sites containing the computer systems must be physically secured against armed or surreptitious entry by intruders.

476 views • 23 slides

Network Security

Network Security. Reasons to attack. Steal information Modify information Deny service (DoS). Targets. DB Servers Traffic Workstations Bandwidth. Types of attack. Snooping: listening to data Corrupting: modifying data

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Network Security

Network Security. The only safe computer is a dead computer (or at least a disconnected one) Security is about balancing the usefulness and the potential abuse of the network and the information therein

600 views • 38 slides

Network Security

Network Security. Public Key Cryptography. Public Key Cryptography Agenda:. Message authentication – authentication codes and hash functions Public key encryption – principles and algorithms Exchange of conventional keys Digital signatures Revisit key management.

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Network Security

Network Security. Objectives. Types of Attacks Attacks on the OSI & TCP/IP Model Attack Methods Prevention Switch Vulnerabilities and Hacking Cisco Routers Interesting links. Physical Access Attacks Wiretapping Server Hacking Vandalism. Dialog Attacks Eavesdropping Impersonation

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Network Security

Network Security . Problem. Computer networks are typically a shared resource used by many applications representing different interests. The Internet is particularly widely shared, being used by competing businesses, mutually antagonistic governments, and opportunistic criminals.

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Network Security

Network Security. Security and Safety. Security controls access to your data. Who can see it Who can change it Safety guarantee’s availability of your data Your data is available. When you go to a Web Site What “Personal” Info is Transmitted. The Client’s (Your) IP address.

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Network Security

Network Security. Encryption. Process of converting readable data into unreadable characters to prevent unauthorized access. Encrypt – make unreadable Decrypt – make readable. Encryption…Cont’d. Plaintext – data not yet encrypted Ciphertext – data that has been encrypted

276 views • 9 slides

Network Security

Network Security. ITIS 6201 – Computer Security and Privacy. Fictional Health Services – High-level Network Diagram. Pharmacy. Physical Security. Medical Technology X-ray Scans Labs. The Internet. Internet Access (In/Out). Authentication Services. Mainframe. Server Farms.

311 views • 8 slides

Network Security

Network Security. Term 2, 2011 Week 3. CONTENTS. Network security Security threats Accidental threats Deliberate threats Power surge Usernames and passwords Firewalls Wireless security. Network security.

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Network Security

Network Security. DMZ (De-Militarized Zone). General Framework. What is a DMZ?. A DMZ is a computer network that sits between a trusted internal network, such as a corporate private LAN, and an untrusted external network, such as the public Internet Also known as a

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Network Security

Network Security. DMZ (De-Militarized Zone). Privilege levels in Cisco routers. Cisco IOS offers 16 privilege levels User Exec mode: Level 1 Privilege EXEC mode: Level 15

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Network Security

Network Security. Gordon College Adapted from Computer Networking: A Top Down Approach. What is network security?. Confidentiality : only sender, intended receiver should “understand” message contents sender encrypts message receiver decrypts message

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Network Security

Attack Analysis. Network Security. Outline. Types of Attacks Vulnerabilities Exploited Network Attack Phases Attack Detection Tools. Vulnerability Summary for Week of April 29, 2013. From US-CERT www-us-cert.gov/ncas/bulletins/SB13-119

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Network Security

Network Security. Shivkumar Kalyanaraman Rensselaer Polytechnic Institute shivkuma@ecse.rpi.edu http://www.ecse.rpi.edu/Homepages/shivkuma. Common Network Attacks Security techniques: passwords, hash functions, one-time passwords, digital signatures, symmetric/asymmetric key cryptography

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Network Security

Network Security. Computer Networking: A Top Down Approach Featuring the Internet , 3 rd edition. Jim Kurose, Keith Ross Addison-Wesley, July 2004. understand principles of network security: cryptography and its many uses beyond “confidentiality” authentication message integrity

1.02k views • 86 slides

Network Security

Network Security. By: Daniel Jordan. What is a Virus?. A virus is a program that is designed to infect a host computer and spread to any computer it is executed on. Types of Viruses.

457 views • 19 slides

Network Security

Network Security. Chapter 8. Security in Wireless Ad Hoc Networks. Objectives. Introduction Routing in Multihop Ad Hoc Networks Key Establishment and Authentication Confidentiality and Integrity Loopholes Bluetooth. Additional slide for the previous week.

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Network Security

Network Security. Network Security. Information secrecy-only specified parties know the information exchanged. Provided by criptography. Information integrity-the information is unaltered received by the specified party. Provided by digital signatures.

398 views • 23 slides

network security planning, network security SMB

With the increase in cyber-attacks, it’s essential to have a comprehensive plan in place.

256 views • 9 slides

Network Layer Security Network Systems Security

Network Layer Security Network Systems Security. Mort Anvari. Security in Network Layer. Implementing security in application layer provides flexibility in security policy and key management Problem is need to implement security mechanism in every application individually

520 views • 24 slides

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