local area network security ppt

... proper security design (security policy) of the network will be discussed in the section on countermeasures following this section. 5.5.2 Network Security Clause 24 BACnet’s Network Security ... can be implemented to increase network security. There are two primary types of IDS: network based and host-based. The network based system acts similarly to a network level firewall. It cannot ... broadcast on the local (trusted) network by wrapping it in the security envelope and sending it along to every SD and SR it knows. The SR can control traffic into the trusted network behind it...

Ngày tải lên: 14/03/2014, 22:20

... nhất được nhận dạng bởi thiết bị hai đầu. 5.4 CÔNG NGHỆ VLAN: VLAN là viết tắt của Virtual Local Area Network hay còn gọi là mạng LAN ảo. Một VLAN được định nghĩa là một nhóm logic các thiết ... hình native VLAN thì phải cấu hình ở giao diện vật lý. CHƯƠNG II LÝ THUYẾT VỀ MẠNG WAN (WIDE AREA NETWORK) I. KHÁI NIỆM : Là mạng được thiết lập để liên kết các máy tính của hai hay nhiều khu ... trí rất xa nhau, ví dụ như những quốc gia khác nhau, thì khi đó ta có mạng diện rộng WAN(Wide Area Network) Trang NGUYỄN ĐÌNH CÔNG – 36CLTH 2929 V./. CÁC CÔNG NGHỆ MẠNG LAN : 5.1. CÔNG NGHỆ CHUYỂN...

Ngày tải lên: 25/04/2013, 11:58

Ngày tải lên: 01/09/2013, 10:30

... Comprehensive Guide to Network Security page 33 Network Layer The network layer describes how systems on different network segments find each other; it also defines network addresses. A network address ... to serialize network devices (like network cards or networking hardware) and is a unique identifier that distinguishes it from any other networking device in the world. No two networking devices ... to your network. Chapter 2 introduces risk analysis and security policies. The purpose of a risk analysis is to quantify the level of security your network environment requires. A security...

Ngày tải lên: 11/12/2013, 03:15

... onto a network would be given the key to use that network. The choice of wide area coverage networking, as with wireless or power-line networking, might also restrict the number of networks ... Home Network Security 37 Home Network Security Carl M. Ellison, Corporate Technology Group, Intel Corporation Index words: firewall, UPnP, 802.11, wireless, VPN, security, home networking ... only a wired network and have no other security. If such a home network uses wireless networking, one can make sure that link encryption is used to enforce the policy that only home network devices...

Ngày tải lên: 11/12/2013, 15:15

Ngày tải lên: 18/12/2013, 12:32

... Introduction to Security Threats 2 Lesson: Predicting Threats to Security 8 Lab A: Identifying Threats to Network Security 15 Module 3: Identifying Threats to Network Security 10 ... make them the most dangerous attackers to a network. Key points Module 3: Identifying Threats to Network Security 7 Difficulties in Defending Networks ***************************** ILLEGAL ... Threats to Network Security 3 Why Network Attacks Occur ***************************** ILLEGAL FOR NON - TRAINER USE ****************************** Attackers attempt to compromise the security...

Ngày tải lên: 21/12/2013, 19:15

Ngày tải lên: 30/12/2013, 22:06

... telecommunications, and security, Ted teaches in the Networking and Security product lines and focuses on TCP/IP, Networking Fundamentals, Network Management, Storage Networking, and CISSP Preparation. ... an IP network or subnet. In most practical networks, all devices in a small business or enterprise network are not located on the same Ethernet network broadcast domain. W e separate the networks ... installation of Ethernet networks, a change was made to the network topology . Networks were converted from coaxial cable to twisted pair cabling by introducing a new device into the network. That device...

Ngày tải lên: 17/01/2014, 06:20

... and Managing Cisco Security Fast Track 407 Introduction 408 What Is a Managing Cisco Security Fast Track? 408 Introduction to Cisco Network Security 408 Network Security 409 Network Communications ... Detection? 290 Network Attacks and Intrusions 290 Poor Network Perimeter/Device Security 291 Network Sniffers 291 Scanner Programs 291 Network Topology 292 Unattended Modems 292 Poor Physical Security ... Introduction to IP Network Security You should consider the security during the logical design of a network. Security considerations can have an effect on the physical design of the network. You need...

Ngày tải lên: 24/01/2014, 19:20

... provide protection for all areas of the network. Be sure to consider all types of users on the network. Diversity of users on the network makes the task of network security more complicated. ... detecting network- security vulnerabilities, they may be comple- mented by a security assessment from professional security consultants. A security assessment is a concentrated analysis of the security ... States Service Provider Business Focus Service Area Table 3 Cisco Powered Network Managed Security Providers 17 Security intelligence services are different from managed -security services, which take operational...

Ngày tải lên: 14/02/2014, 16:20

Ngày tải lên: 17/02/2014, 15:30

... methods described below. Choose the one most suitable for your network. For simple networks WEP or WPA-PSK are most suitable, complex networks with installed RADIUS services can use WPA. Part ... “Properties”. Click on “Wireless Network tab. 3. Select the Access Point which you going to connect to and click “Configuration” on the right. 4. Under “Wireless Network Properties” tick “Data ... Wireless Utility as an example. 2. Right click on “My Network Places” on your desktop and select “Properties” (or go to Start > Control Panel > Network) . 3. Select your Wireless LAN Card, right-click...

Ngày tải lên: 05/03/2014, 23:20

... LANs ❚ Mobility ❚ Flexibility ❚ Hard to wire areas ❚ Reduced cost of wireless systems ❚ Improved performance of wireless systems William Stallings Data and Computer Communications Chapter 13 Local Area Network Technology ... transmitter ❙ Must satisfy these for all combinations of sending and receiving station on bus ❙ Usual to divide network into small segments ❙ Link segments with amplifies or repeaters Star Ring Architecture ❚ Feed ... Wireless LAN Applications ❚ LAN Extension ❚ Cross building interconnection ❚ Nomadic access ❚ Ad hoc networks ...

Ngày tải lên: 06/03/2014, 09:21

... Database 2/6/06 CIS/TCOM 551 17 Implementing Multilevel Security ã Dynamic: Tag all values in memory with their security level – Operations propagate security levels – Must be sure that tags can’t be ... = X; 2/6/06 CIS/TCOM 551 9 Multilevel Security Policies ã In general, security levels form a "join semi-lattice" – There is an ordering ≤ on security levels – For any pair of labels ... Program analysis May be more precise – May have less overhead CIS 551 / TCOM 401 Computer and Network Security Spring 2006 Lecture 6 2/6/06 CIS/TCOM 551 4 Access Control ã Discretionary: The individual...

Ngày tải lên: 22/03/2014, 15:21

... on network security. There are many good books and Internet-hosted information on the subject. But for reference, some general information on network security is provided in “Appendix A: Data Security ... convenience for network users, and the degree of security offered. There is no single, standard firewall security solution. Firewall security can be compared with the physical security provided ... network. 5. External Network Interface This section describes the security aspects of the interface between the AT&T Wireless IP network and the external data network. The external network interface...

Ngày tải lên: 22/03/2014, 15:21

... Thiết lập và định cấu hình cho một mạng LAN (Local Area Network) Thiết lập mạng: Lắp card mạng: ban đầu bạn phải lắp card mạng vào máy tính bằng ... TCP/IP cho từng máy (đối với Win 9x) bạn bạn tiến hành: Vào My computer > Control Panel > Network > nếu tại đây bạn đã thấy có giao thức TCP/IP rồi thì bạn khỏi cần add thêm nếu chưa ... nên thiết lập gán IP theo dạng tĩnh. Ðể thực hiện bạn vào My computer > Control Panel > Network > nếu tại đây bạn đã thấy có giao thức TCP/IP rồi thì bạn khỏi cần add thêm nếu chưa...

Ngày tải lên: 29/03/2014, 14:20

Ngày tải lên: 14/06/2014, 15:15