WEEK 9 (IT SECURITY)

LECTURE 9

In this lecture I learn about Wireless Security. Wireless security is the prevention of unauthorized access or damage to computers using wireless networks.Wireless have quickly become part of today's corporate technology landscape. Yet the rapid pace of deployment has far outstripped the technology's suitability for a stable and secure network environment. Many information security specialists are on record saying that security protocols built into the early 802.11 standards are clearly inadequate for the task. Far worse, the security measures that are available often go unimplemented many times by non-technical employees who install Wi-Fi hardware without the expertise of network professionals. This opens major areas of vulnerability in corporate networks.

There were 3 basic security 
• Authentication – Provide security service to identify consumer identity communicate.
• Integrity – To be sure message unmodified during transaction between wifi clients and access point.
• Confidentiality – To provide privacy are achieved by a network wired.

802.1X authentication can help enhance security for 802.11 wireless networks and wired Ethernet networks. 802.1X uses an authentication server to validate users and provide network access. On wireless networks, 802.1X can work with Wired Equivalent Privacy (WEP) or Wi Fi Protected Access (WPA) keys. This type of authentication is typically used when connecting to a workplace network.

WPA encrypts information, and it also checks to make sure that the network security key has not been modified. WPA also authenticates users to help ensure that only authorized people can access the network. There are two types of WPA authentication: WPA and WPA2. WPA is designed to work with all wireless network adapters, but it might not work with older routers or access points. WPA2 is more secure than WPA, but it will not work with some older network adapters. WPA is designed to be used with an 802.1X authentication server, which distributes different keys to each user. This is referred to as WPA-Enterprise or WPA2-Enterprise. It can also be used in a pre-shared key (PSK) mode, where every user is given the same passphrase. This is referred to as WPA-Personal or WPA2-Personal.