tài liệu ccna security

... kết leased line là chọn protocol được sử dụng để truyền dữ liệu (IP, IPX…), chọn WAN protocol cho việc đóng gói (encapsulation) dữ liệu trên đường truyền (PPP, HDLC, LAPB…) Các protocol IP ... dữ liệu theo một đường liên kết tối ưu. Đối với một hệ thống gồm nhiều router kết nối với nhau, trong đó các router có nhiều hơn hai đường liên kết với nhau, vấn đề xác định đường truyền dữ liệu ... có metric nhỏ nhất để truyền dữ liệu. Các thuật toán, routing protocol, metric… sẽ ủửụùc trỡnh baứy chi tieỏt trong phan sau. ã Switching Quá trình chuyển dữ liệu (switching) là quá trình cơ...

Ngày tải lên: 23/08/2012, 09:46

... Layer/Transport Layer Security protocol ã One implementation is the Hypertext Transport Protocol over Secure Sockets Layer Secure Sockets Layer (SSL)/ Transport Layer Security (TLS) (continued) ã TLS ... keys before any data is transmitted ã FORTEZZA is a US government security standard that satisfies the Defense Messaging System security architecture – Has cryptographic mechanism that provides ... Gateway Interface (CGI) (continued) ã CGI scripts create security risks Do not filter user input properly Can issue commands via Web URLs ã CGI security can be enhanced by: – Properly configuring...

Ngày tải lên: 17/09/2012, 10:43

Ngày tải lên: 06/08/2013, 16:20

... 2 Information Security: The Big Picture - SANS GIAC â 2000 2 Agenda ã General Security Introduction ã Telecommunications Fundamentals ãNetwork Fundamentals ãNetwork Security ã World Wide Web Security ã ... Fundamentals ãNetwork Security ã World Wide Web Security ã Information Secrecy & Privacy ã Identification and Access Control ã Programmatic Security ãConclusion When many people think of security they ... become, it is full of security issues and problems. This section will examine those issues. 15 Information Security: The Big Picture - SANS GIAC â 2000 15 Agenda ã General Security Introduction ã...

Ngày tải lên: 09/12/2013, 17:15

... your security configuration, and to learn more about network security from certified security instructors . Good luck and have fun! Web sites for creating a security policy http://www.computersecuritynow.com http://www .sans .org/resources/policies/#primer http:/ /security. berkeley.edu/pols.html Web ... network security, your objectives and requirements are laid out in your Corporate Security Policy, which defines what you need and how you would like to secure your network. Create your security ... into a single module-based chassis. From a security standpoint, the operating system natively supports all security features mentioned in the “Switch Security section of this white paper . Now...

Ngày tải lên: 09/12/2013, 17:15

... introduces concepts to get started on network security and begin the process of securing your network at the switch level. Security Policy: Start at the Beginning Security is one of the fastest growing ... more true than when planning network security. Create your security policy to serve as a starting point and future road map for securing your corporation. A security policy, originally defined ... to guide your progress to completion. In network security, your objectives and requirements are laid out in your Corporate Security Policy. This security policy defines what you need and how you...

Ngày tải lên: 10/12/2013, 14:15

... 23 Information Security: The Big Picture - SANS GIAC â 2000 23 IPSec ã Addresses security at IP layer ã Authentication header (AH) ã Encapsulating Security Payload (ESP) ã Offers security services ... This creates many situations where the security mechanisms are inadequate or bugs are introduced in the implementation of the security. By incorporating the security mechanisms as part of the underlying ... attacks. 22 Information Security: The Big Picture - SANS GIAC â 2000 22 Network Security Protocols ã IP is inherently insecure ã Too easy to mangle packets ã Attempts to add security to applications ã...

Ngày tải lên: 10/12/2013, 14:16

... 2 Information Security: The Big Picture - SANS GIAC â 2000 2 Agenda ã General Security Introduction ã Telecommunications Fundamentals ãNetwork Fundamentals ãNetwork Security ã World Wide Web Security ã ... 15 Information Security: The Big Picture - SANS GIAC â 2000 15 Agenda ã General Security Introduction ã Telecommunications Fundamentals ãNetwork Fundamentals ãNetwork Security ã World Wide Web Security ã Information ... found a way around Java’s security features. However, it is still light years ahead of anything that came before it in terms of active content security. 20 Information Security: The Big Picture...

Ngày tải lên: 10/12/2013, 14:16

... 35 Information Security: The Big Picture - SANS GIAC â 2000 35 Security Books ã General Security Computer Security Basics Deborah Russel, G.T. Gangemi – Practical UNIX & Internet Security Simson ... 33 Information Security: The Big Picture - SANS GIAC â 2000 33 Agenda ã General Security Introduction ã Telecommunications Fundamentals ãNetwork Fundamentals ãNetwork Security ã World Wide Web Security ã ... authenticated. 1 Information Security: The Big Picture - SANS GIAC â 2000 1 Information Security: The Big Picture – Part VI Stephen Fried 17 Information Security: The Big Picture - SANS...

Ngày tải lên: 10/12/2013, 14:16

... 21 Basic Security Policy - SANS â2001 21 Objectives ã Defining Security Policy ã Using Security Policy to Manage Risk ã Identifying Security Policy ã Evaluating Security Policy ã Issue-specific Security ... 13 Basic Security Policy - SANS â2001 13 Objectives ã Defining Security Policy ã Using Security Policy to Manage Risk ã Identifying Security Policy ã Evaluating Security Policy ã Issue-specific Security ... 3 Basic Security Policy - SANS â2001 3 Objectives ã Defining Security Policy ã Using Security Policy to Manage Risk ã Identifying Security Policy ã Evaluating Security Policy ã Issue-specific Security...

Ngày tải lên: 10/12/2013, 14:16

... DEFINING SECURITY POLICY 3. USING SECURITY POLICY TO MANAGE RISK 4. IDENTIFYING SECURITY POLICY 5. SECURITY POLICY WORKSHEET 6. EVALUATING SECURITY POLICY 7. ISSUE-SPECIFIC SECURITY ... Basic Security Policy for an organization, or better defining the existing one. The policy itself should be both effective and realistic with achievable security goals. Without a security ... and systems. The security policy should seek a balance between “Access” and Security . Of these two points “Access” pertains to performance and ease of use, while Security focuses on...

Ngày tải lên: 10/12/2013, 14:16

... time. 6 - 5 Web Security - SANS â2001 5 HTML Security ã Reading HTML Source Given the open nature of the HTTP protocol, it is easy to start seeing some of the negative security issues that ... found a way around Java’s security features. However, it is still light years ahead of anything that came before it in terms of active content security. 6 - 16 Web Security - SANS â2001 16 Active ... executed. 6 - 41 Web Security - SANS â2001 41 Summary ã Putting together a web application can be very complex even without security. ã So many companies only focus on functionality. ã Security must...

Ngày tải lên: 10/12/2013, 14:16

... 35 Information Security: The Big Picture - SANS GIAC â 2000 35 Security Books ã General Security Computer Security Basics Deborah Russel, G.T. Gangemi – Practical UNIX & Internet Security Simson ... 28 Information Security: The Big Picture - SANS GIAC â 2000 28 Agenda ã General Security Introduction ã Telecommunications Fundamentals ãNetwork Fundamentals ãNetwork Security ã World Wide Web Security ã ... information security. Good luck in your travels and I hope you keep your systems safe and secure. 12 Information Security: The Big Picture - SANS GIAC â 2000 12 Agenda ã General Security Introduction ã...

Ngày tải lên: 10/12/2013, 15:15

... sliding windows. Has a large overhead due to built in error checking. This protocol uses Port 6. CCNA STUDY GUIDE CCNA 2.0 Exam 640-507 Edition 3 28 http:\\troytec.com RIP RIP is a distance vector ... they just have to be re-patched and enabled into their existing VLAN ã Workgroup and network security - You can restrict the number of users in a VLAN and also prevent another user from joining...

Ngày tải lên: 10/12/2013, 15:15

... Protocol 24 Novell IPX 24 Enable IPX protocol 24 IPX address and encapsulation types 25 CCNA STUDY GUIDE CCNA 2.0 Exam 640-507 Edition 3 25 http:\\troytec.com network. Leading zeros are not needed. ... sponsored by, endorsed by or affiliated with Cisco Systems, Inc. Ciscođ, Cisco Systemsđ, CCDA, CCNA, CCDP, CCNP™, CCIE™, CCSI™, the Cisco Systems logo and the CCIE logo are trademarks or registered trademarks ... These are applied in a similar way to IP from the interface config mode: 36 http:\\troytec.com CCNA 2. 0 PRACTICE QUESTIONS 1. What is the Network ID for the IP address 192.168.12.6, assuming...

Ngày tải lên: 10/12/2013, 15:15

... GIAC LevelTwo - â2000, 2001 3 IPsec - Security Services The security can cover communications: - Host-to-Host - Security gateway-to -Security gateway - Host-to -Security gateway IPsec is a set of ... Processing Security Level Tunnel End Point 10.0.1.0 Apply IPsec Top Secret Security Gateway B Turn to slide Security Associations Selectors, Processing & Location”. The security ... HMAC-MD5 The Security Association Database represents the active Security Associations on an IPsec device. Let’s examine a second database on slide Security Associations The Security Association...

Ngày tải lên: 10/12/2013, 15:15

Ngày tải lên: 10/12/2013, 16:15

Ngày tải lên: 10/12/2013, 17:15

Ngày tải lên: 11/12/2013, 13:15

Ngày tải lên: 11/12/2013, 14:15