TAILIEUCHUNG - Chapter 18: Network Security

Strong encryption algorithm Even if known, should not be able to decrypt or work out key Even if a number of cipher texts are available together with plain texts of them Sender and receiver must obtain secret key securely Once key is known, all communication using this key is readable | William Stallings Data and Computer Communications Chapter 18 Network Security Security Requirements Confidentiality Integrity Availability * Passive Attacks Eavesdropping on transmissions To obtain information Release of message contents Outsider learns content of transmission Traffic analysis By monitoring frequency and length of messages, even encrypted, nature of communication may be guessed Difficult to detect Can be prevented * Active Attacks Masquerade Pretending to be a different entity Replay Modification of messages Denial of service Easy to detect Detection may lead to deterrent Hard to prevent * Security Threats * Conventional Encryption * Ingredients Plain text Encryption algorithm Secret key Cipher text Decryption algorithm * Requirements for Security Strong encryption algorithm Even if known, should not be able to decrypt or work out key Even if a number of cipher texts are available together with plain texts of them Sender and receiver must obtain secret key securely .

• Quản trị mạng
• network security
• computer protection
• computer tips
• computer skills
• computer engineering
• computer security
• computer security
• Converged Network Security
• Web security
• security rules
• encryption techniques
• security techniques
• Security chat rooms
• especially
• Network Security Tools
• CCNA Security
• Lecture CCNA Security
• Modern Network Security Threats
• Evolution of Network Security
• Drivers for Network Security
• Network Perimeter
• Network Perimeter Security
• Network Security Principles
• Cryptography
• IDS Tools
• CGI attacks
• network intruders
• Managing Security
• Wireless
• Wireless Network Security
• attack techniques
• defensive techniques
• operating system security
• application security
• security policy
• Network Security Fundamentals
• Guide to Network Security Fundamentals
• Information security
• Define information security
• Information security careers
• Operational security
• Harden physical security
• Secure the physical environment
• Mobile device security
• Lecture Network security
• Computer network
• Computer hacking
• Internet security
• Network security model
• Securing the Network Infrastructure
• Network cable plant
• Secure removable media
• Network security hacks
• Ebook Network security hacks
• Network security technologies
• Unix host security
• Windows host security
• Wireless Security
• Advanced security
• Computer forensics
• Harden security
• Network Management Security
• Management Security
• security mechanisms
• security services
• security architecture
• encryption system
• Security principles
• Effective authentication methods
• Control access to computer systems
• Security Baselines
• Disable nonessential systems
• Harden operating systems
• Protect e mail systems
• World Wide Web vulnerabilities
• Security policy cycle
• Risk identification
• Security management
• Identity management
• Plan for change management
• CompTIA® Security+
• CompTIA Security+ certification
• Linux file manipulation tools
• Internal physical security controls
• Network hardware security modules