on the network are able to access the Internet but not able to access the LAN. Those who need LAN access must VPN into the corporate network, as if they were coming in from outside the building. There are at least three ways to prevent traffic on the open network from accessing the cor[r]
basic method to provide anonymity is to have a temporary identity (TID) instead of the real id of the user. There are severalissues to consider when designing a security protocol for cellular networks. One, they have low computational power whichmeans that algorithms that require high process[r]
central to securing routers and networks.van Wyk, Kenneth and Richard Forno. Incident Response. O’Reilly & Associates,2001.This book combines technical information with guidelines for administrativeplanning so that organizations can map out their responses to computer incidents.Wenstrom, Mic[r]
exchange, encrypts using dynamic WEP keys, and supports mutual authentication.VPN security levels include the following:■ User authentication—Allows only authorized users to connect, send, and receive data over the wireless network.1102.book Page 171 Tuesday, May 20, 2003 2:53 PM172 Ch[r]
wireless networks extend beyond the physical boundaries of their buildings. Typically, a site survey uses the same tools an attacker uses, such as a sniffer and a WEP cracking tool (for 802.11 network site surveys). The sniffer can be either Windows-based (such as NetStumbler) or UNIX/Linux-b[r]
to substantial security risks. The major issues are [1–3]: (a) threats to the physical security ofthe network; (b) unauthorized access by unwanted parties; and (c) privacy.A certain level of security is a must in almost all local area networks, regardless of whetherthey are w[r]
WLAN Association Table on CISCOAccess PointFigure 1 shows the details of a wireless node that LVFRQQHFWHGLQDZLUHOHVV/$1FHOO7KH¿JXUHshows the details of CISCO Aironet 320 series AP and another client connected within the cell. This is a very simple wireless connection b[r]
Trên môi trường không dây chúng ta không thể giả thiết tất cả các trạm “nghe thấy” được nhau đây là sự giả thiết cơ sở của sơ đồ dò tìm xung đột, và việc một trạm nhận thấy môi trường tự[r]
using the checklist to harden and audit Cisco routers.Appendix B, Physical Security, talks about the importance of physically securing yourrouters. It presents common physical vulnerabilities and discusses how to overcomethem.Appendix C, Incident Response, gets you thinking about how t[r]
you to design a secure wireless Web presence.This chapter introduces the majorissues and challenges of wireless Web security and discusses the two general secu-rity models that are in use today, as well as covering the specific ways thosemodels attempt to overcome security[r]
Command Descriptionvlan vlan-id Creates a VLANswitchport mode access Configures a port as an access portswitchport access vlan vlan-id Assigns a VLAN to a portswitchport mode trunk Enables a port to act as a trunk portswitchport trunk native vlan vlan-id Sets the native VLAN on a trunkshow interface[r]
digital – code sequence which, when modulated with the carrier frequency and original content, causes the resultant signal to spread across a much wider frequency spectrum, whereas the original radio signal would have occupied only a specific radio frequency. This has the resultant effect of dissipa[r]
SECURITY ANALYSIS Simplicity in Wireless Sensor Network with resource constrained nodes makes them extremely vulnerable to variety of attacks. Attackers can eavesdrop on our radio transmissions, inject bits in the channel, replay previously heard packets and many more. Securing the [r]