To protect network security

In this chapter, students will be able to understand: Password policies ensure that users choose effective passwords; user-level security requires a separate account for each user; in share-level security, all users access shares by using the same passwords; a firewall is a hardware or software product that protects a network from unauthorized access, using techniques such as packet filtering, NAT, or proxy servers;...

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Protect web content from those who don’t have a “need to know” Require users to authenticate using a userid/password before they are allowed access to certain URLs HTTP/1.1 requires that when a user makes a request for a protected resource the server responds with a authentication request header WWW-Authenticate contains enough pertinent information to carry out a “challenge-response” session between the user and the server

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Security Service – a service provided by a protocol layer of communicating open systems, which ensures adequate security of the systems or of data transfers RFC 2828 – a processing or communication service that is provided by a system to give a specific kind of protection to system resources; security services implement security policies and are implemented bt security mechanisms.

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IMS security is divided into access security (specified in 3GPP TS 33.203 [28]) and network security (specified in 3GPP TS 33.210 [29]). Access security (which we describe in Section 12.1) includes authentication of users and the network, and protection of the traffic between the IMS terminal and the network. Network security (which we describe in Section 12.2) deals with traffic protection between network nodes, which may belong to the same or to different operators.

18p 0984272663 27-04-2011 76 11   Download

Việc các attacker có thể xâm nhập vào các mạng wifi của tổ chức, thông qua việc crack khóa mã hóa truy cập vào wifi access point. Cho dù các công nghệ mã hóa mạng không dây hiện nay là rất mạnh như Wired Equivalent Privacy (WEP) và Wi-Fi Protected Access (WPA và WPA-2). Nhưng với những chương trình và thiết bị chuyên dụng, attacker có thể thực hiện thành công ý định của mình. Dưới đây là một trong những demo sử dụng AirPcap (USB 2.0 Wireless Capture Adapter – card bắt tín hiệu wifi) và chương trình Cain...

5p kimthong 23-03-2011 210 56   Download

[ Team LiB ] Recipe 5.8 Transferring Login Credentials Securely Problem You need to protect login credentials during transmission over the network and when they are stored within a database. Solution Use password hashing and salting with the .NET FormsAuthentication class to control user

5p luvpro 04-08-2010 63 6   Download

The rise of the Internet provides enterprises with a unique opportunity to realize cost savings in their internal and external communications. But the Internet was not designed with security in mind. Enterprises with mission-critical Internet applications must secure the data they transmit, as well as protect their internal networks from outside intrusion. The Nortel VPN Router 2700 is an ideal solution for large enterprises that want to extend secure remote access to many teleworkers or remote sites. ...

4p hoangtumayman 14-05-2010 124 8   Download

Hundreds of Thousands of $$$ Worth of Network Equipment can be Rendered Junk in a Flash! The issue of protecting networks from security breaches has attracted considerable attention but organisations also need to guard against environmental risks such as lightning. Damaged or destroyed equipment, which is integrated into manufacturing or data storage processes, can cause physical damage, as well as high consequential losses due to downtime. Lightning strikes can also delay production due to data loss and damage process control computers or computer-based warehouse and storage systems.

2p qd-tek 28-04-2010 81 3   Download