7understanding network security 334
Cryptography and Network Security Chapter 7 pptx
... Issues hierarchies of KDC’s required for large networks, but must trust each other session key lifetimes should be limited for greater security use of automatic key distribution on behalf ... create a covert channel link encryption obscures header details but overall traffic volumes in networks and at end-points is still visible traffic padding can further obscure flows but at cost ... Placement of Encryption when using end-to-end encryption must leave headers in clear so network can correctly route information hence although contents protected, traffic pattern flows...
Ngày tải lên: 06/03/2014, 16:20
Network security Chapter 7 pptx
... well-known in network security world ❒ Bob, Alice (lovers!) want to communicate “securely” ❒ Trudy, the “intruder” may intercept, delete, add messages ❒ 7: Network Security What is network security? ... all) ❒ decryption key private (known only to receiver) ❒ 7: Network Security 10 Public key cryptography Figure 7.7 goes here 7: Network Security 11 Public key encryption algorithms Two inter-related ... n letter 12 l 7: Network Security 13 Authentication Goal: Bob wants Alice to “prove” her identity to him Protocol ap1.0: Alice says “I am Alice” Failure scenario?? 7: Network Security 14 Authentication:...
Ngày tải lên: 22/03/2014, 14:20
A+ NETWORK+ SECURITY+ EXAMSIN A NUTSHELL phần 7 ppt
... the security protocols covered on the Network+ exam are covered in this section Protocols and Standards | 483 Network+ Study Guide Security Protocols IP Security (IPSec) Internet Protocol Security ... correctly transmitting and receiving data Components of Network Security In this section, we will cover the main components of network security Network security is achieved through the use of both software ... implemented as VPNs Implementing Network Security Regardless of the network operating system used on the network, there are some essential components of network security that the administrators...
Ngày tải lên: 09/08/2014, 07:20
Network Security Foundations phần 7 pptx
... Chapter 12 Unix Network Security In This Chapter ◆ ◆ This chapter covers the major contemporary Unix network security mechanisms There are a number of obsolete Unix protocols and security mechanisms ... account in the network) or pervasive network security Security accounts are valid only on individual machines, machines not “trust” other machines’ accounts per se, and every network service ... area networks (LANs) ticket Network File System (NFS) Ticket Granting Ticket (TGT) Network Information System (NIS) user context one-time passwords yellow pages (or yp) PAMed Unix Network Security...
Ngày tải lên: 13/08/2014, 15:21
designing network security cisco press phần 7 ppt
... interface has a security level of and is named outside q Only one network should have a security level of 100 q Only one network should have a security level of q Multiple perimeter networks can ... same security level as destination interface security level: No communication between the two networks In addition, there are some further considerations: q The first interface has a default security ... the security levels for each interface, specifies that each ! interface uses Ethernet, and assigns IP addresses and network ! masks nameif ethernet0 outside security0 nameif ethernet1 inside security1 00...
Ngày tải lên: 14/08/2014, 14:20
hackers beware the ultimate guide to network security phần 7 pptx
... Secure Networks Inc The intention of this package is to perform various security checks on remote servers running NetBIOS file sharing services In the grand scheme of NetBIOS and Windows NT security, ... services, such as ftp, telnet, and Web service, for security problems In addition to this, NTInfoScan checks NetBIOS share security and User account security Winfingerprint 2.2.6 by Kriby Kuehl at ... share files across the Internet, unbind “Client for Microsoft Networks” and “File and printer sharing for Microsoft Networks” from every network adapter using TCP/IP If you are connected to a LAN...
Ngày tải lên: 14/08/2014, 18:20
Wireless Network Security phần 7 pps
... Networks (WLANs) introduce new challenges including the design of secured and fast handover protocols Handover operations within and between networks must not compromise the security of the networks ... disruption-tolerant networks,” Ad Hoc Networks, vol 6, no 4, pp 600–620, 2008 [36] H Liu, P.-J Wan, X Liu, and F Yao, “A distributed and efficient flooding scheme using 1-hop information in mobile ad hoc networks,” ... authentication and secure communication protocol for wireless mobile ad hoc networks,” Security and Communication Networks, vol 1, no 2, pp 179–189, 2008 [38] M Striki, J Baras, and K Manousakis,...
Ngày tải lên: 14/08/2014, 19:20
Network Security
... key distribution r Ì security in practice: r firewalls r security in application, transport, network, link layers 8: Network Security 8-2 Chapter roadmap 8.1 What is network security? 8.2 Principles ... Access control: firewalls 8.7 Attacks and counter measures 8.8 Security in many layers 8: Network Security 8-3 What is network security? Confidentiality: only sender, intended receiver should ... Chapter 8: Network Security Chapter goals: Ì understand principles of network security: cryptography and its many uses beyond “confidentiality”...
Ngày tải lên: 12/09/2012, 15:06
Windown 2003 network security
... spooled để tăng tốc độ in ấn 17 Chọn Keep Printed Documents, click OK 18 Nhấp đôi chuột vào My Network Places 19 Nhấp đôi chuột vào Computers Near Me 20 Nhấp đôi chuột vào printer server of yout ... thống bảo mật mà bạn tạo sử dụng kẻ công cần ngửi tất gói tin mạng biên dịch lại cho họ giải trí Network Address Translation (NAT) tiêu chuẩn Internet xác định RFC 1631.NAT sử dụng mặt nạ IP riêng ... điểm truy cập cáp Remote Access Các Windown 2003 Routing Remote Access Serveci (RRAS) bao gồm: • Network Address Translation (NAT) • Giao thức định tuyến (RIP OSPF) • Remote Authentication Dial-In...
Ngày tải lên: 14/09/2012, 09:57
NETWORK SECURITY
... công nghệ ♦ Bảo mật thông tin có từ ♦ Các mối đe dọa xung quanh Network Security Course NETWORKS OF TODAY Open Network Network Security Course Telecommuters Internet Mobile Users Internet-Based ... Bob Network Security Course AN TOÀN DỮ LIỆU TRÊN ĐƯỜNG TRUYỀN ♦ Making data un-readable by protocol analyzers and other “man-in-the-middle” methods on the network Trudy m m’ Alice Bob Network Security ... thực Virtual Private Networks Kỹ Thuật công 10 Luật, sách an toàn thông tin Network Security Course 11 CƠ BẢN VỀ AN NINH MẠNG Không có hệ thống tuyệt đối an toàn Network Security Course “The only secure computer is one that’s ...
Ngày tải lên: 17/09/2012, 10:44
Wireless network security
... Security WPA Personal Security WPA2 Personal Security Enterprise Wireless Security IEEE 802.11i WPA Enterprise Security WPA2 Enterprise Security Enterprise Wireless Security Devices Thông ... nghiệp, phủ đào tạo Personal wireless security có mô hình phát triển Wi-Fi Alliance: WPA Personal Security WPA2 Personal Security Personal Wireless Security Lịch sử WIFI Sau thời gian ... Wireless Security Bảo mật wireless điển hình chia thành loại: Personal wireless security: thiết kế cho SOHO (small office-home office) cho người tiêu dùng Enterprise wireless security: ...
Ngày tải lên: 22/01/2013, 23:02
Network Security Management Tools
... password security • UNIX is the most powerful operating system for network security, because it has many network utilities • Network logging tools are useful for detecting intrusions • Network security ... password security Q4 Which operating system has the largest selection of network security utilities? A) UNIX is the most powerful operating system for network security, because it has many network ... Systems, Inc MCNS Network Security Management Tools—17-13 Windows 95 Tools • NetScan Tools • Network Toolbox • TCP/IP Surveyor Copyright © 1998, Cisco Systems, Inc MCNS Network Security Management...
Ngày tải lên: 17/10/2013, 07:15
Network Security
... prevents the 10.0 network from accessing the 40.0 network but allows everyone else to a RedDeer(config)#access-list 10 deny 172.16.10.0 0.0.0.255 The standard ACL denies complete network for complete ... direction CHAPTER 29 Security Device Manager This chapter provides information and commands concerning the following topics: • Security Device Manager: Connecting with CLI • Security Device Manager: ... The ACL will allow the response to enter your network, because it will have the ACK bit set as a result of the initial request from inside your network Requests from the outside world will still...
Ngày tải lên: 19/10/2013, 00:20
Nmap network security scanner man page
... Sometimes you only want to know which hosts on a network are up Nmap can this by sending ICMP echo request packets to every IP address on the networks you specify Hosts that respond are up Unfortunately, ... scanning them This allows the scanning of networks that don't allow ICMP echo requests (or responses) through their firewall microsoft.com is an exam- ple of such a network, and thus you should always ... (wItHOUt qUOteZ) to sh00t output iNT0 stDouT!@!! resume A network scan that is cancelled due to control-C, network outage, etc can be resumed using this option The logfilename must...
Ngày tải lên: 19/10/2013, 12:15
Network Security and The Cisco PIX Firewall P3
... Trần Giáo: Lớp K3D_Khoa CNTT_ĐHTN Chapter 3: cisco pix firewall models and features Apdaptive Security Algorithm (ASA) – thực việc điều khiển kết nối stateful thông qua PIX Firewall Cut – ... phòng từ xa đến mạng công ty thông qua Internet sử dụng chuẩn dựa Internet Key Exchange (IKE)/IP security (Ipsec) khả VPN Người sử dụng có mạng plug-and-play (cắm chạy) cách nắm bắt lợi việc xây ... hai PIX Firewall, PIX Firewall router Cisco có hỗ trợ VPN khác PIX Firewall Cisco Virtual Private Networks (CVPN) client PIX Firewall 515 lý tưởng cho địa điểm từ xa mà yêu cầu hai cách truyền thông...
Ngày tải lên: 28/10/2013, 00:15
Network Security and The Cisco PIX Firewall P2
... gần Computer Security Institute (CIS), 70% tổ chức bị mát thông tin vấn đề an ninh mạng có lỗ thủng 60% số nguyên nhân công ty họ Trần Giáo: Lớp K3D_Khoa CNTT_ĐHTN CHAPTER 2: Network Security and ... triển phải phù hợp với bánh xe an ninh phía - bốn bước Security Wheel cần dựa vào: Trần Giáo: Lớp K3D_Khoa CNTT_ĐHTN CHAPTER 2: Network Security and The Cisco PIX Firewall Bước 1: Bảo mật hệ ... (check – balance system) để đảm bảo thiết bị bước Security Wheel cấu hình làm việc đắn 10 Trần Giáo: Lớp K3D_Khoa CNTT_ĐHTN CHAPTER 2: Network Security and The Cisco PIX Firewall Việc đánh giá...
Ngày tải lên: 28/10/2013, 00:15
Module 13: Managing Network Security
... Policy Applying security policies Applying security policies By importing the security template By importing the security template By configuring security settings By configuring security settings ... the security settings Analyze the security settings Delivery Tip Identify or create a security Identify or create a security template template Configure the security setting Configure the security ... returns to zero In a highsecurity network, set this value to one day (1,440 minutes) In a mediumsecurity network, set this value to 30 minutes 8 Module 13: Managing Network Security To configure...
Ngày tải lên: 04/11/2013, 13:15
Establishing A Network Security Policy
... Cisco CCNP Managing Cisco Network Security Establishing A Network Security Policy Evaluating Network Security Threats A security threat can be as simple as snooping your network s normal operation ... Managing Cisco Network Security Contents: Contents: Establishing A Network Security Policy Evaluating Network Security Threats Basic Categories of Security Threats ... Motivations of Network Security Threats Outlining A Network Security Policy Securing The Dialup Connection Configuring the Network Access Server for AAA Security Overview...
Ngày tải lên: 05/11/2013, 12:15