Art Wireless Lan Security Pdf


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PDF | Pages 78 Abstract— Wireless local area networks ( LANs) are playing a major role in the information technology. In-Building Wireless LANs WLAN Security Overview & Directions . http://www- - Federal WLAN. Guideline' focuses on information security issues in wireless LAN, . 12 http:// 13 ISO/IEC

Wireless Lan Security Pdf

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Wireless Lan components-Cisco Wireless Lan security book. in wireless lans- WIRELESS LAN SECURITY FUNDAMENTALS AES is the current “gold standard” for security . pdf. Wireless LAN Security. Today and Tomorrow. By. Sangram Gayal and. Dr. S. A. Vetha Manickam. Center for Information and Network Security. Pune University.

There are two important standards that will be discussed fu in this paper: This standard is also part of the The following discussion of Most corporate networks want to do more than simple usernames and passwords for secure access [13].

Cisco Wireless Controller Configuration Guide, Release 8.1

Secu rity Issu es and Solutions 5. It was originally developed for use with PPP. It is an authentication protocol that provides a generalized framework for several authentication mechanisms [15].

These include Kerberos, public key, smart cards and one-time passwords.

Wireless LAN Security

With a standardized EAP, interoperability and compatibility across authentication methods become simpler. The next section will explain the relation. There are four important entities that explain Au this standard [18]. Authenticator 00 e2 Authenticator is the entity that requires the entity on the other end of the link to be authenticated.

An example is wireless access ut points. Supplicant In Supplicant is the entity being authenticated by the Authenticator NS and desiring access to the services of the Authenticator. SA iii. It may support the functionality of Authenticator, Supplicant or both. Secu rity Issu es and Solutions but it is most likely an external server.

Wireless LAN Security

The supplicant and authentication server are the major parts of Figure 6 below shows the general topology of the above mentioned entities: General topology of Next, the authentication server sends back a challenge to the authenticator, with a token password system.

Different authentication methods will vary this message and the total number of messages. Secu rity Issu es and Solutions iv. The supplicant responds to the challenge via the authenticator and passes the response onto the authentication server. If the supplicant provides proper identity, the authentication server responds with a success message, which is then passed to the supplicant.

The authenticator now allows access to the LAN, which possibly was restricted based on attributes that came back from the authentication server. In this paper, fu the key technical elements that have been defined by the specification will be discussed.

While these elements might change, the information provided will ns provide insight into some of the changes that On the upper layer is the As used in On the lower layer are improved Au encryption algorithms. It is important to understand how all of these three pieces work to form 00 the security mechanisms of Since the concept of However, a true According to TKIP combines the temporal key with the client machine's MAC address and then adds a relatively large octet initialization vector to produce the key that will encrypt the data.

This difference provides a dynamic distribution method that significantly enhances the security of the network. A cryptographic message integrity code, or MIC, called Michael, to defeat forgeries.

A per-packet k ey mixing function, to de-correlate the public IVs from weak keys. A re-keying mechanism, to provide fresh encryption and fu integrity keys, undoing the threat of attacks stemming from key reuse. In addition to TKIP encryption, the Au The AES algorithm is a symmetric block cipher that can encrypt and decrypt information. It is capable of using cryptographic keys of , , 3, and bits to encrypt and decrypt data in blocks of bits [3].

AES e2 based encryption can be used in many different modes or algorithms. The mode that has been chosen for Secu rity Issu es and Solutions management functionality that allows users to understand their network, monitor network performance and enforce network policies [1]. This is a dedicated appliance employing an Intelligent ts Conveyor Engine ICE to passively monitor wireless networks for threats igh and inform the security managers when these occur.

Wireless LAN Security Threats & Vulnerabilities: A Literature Review

WSA helps network administrators to close any vulnerabilities by automatically audits or a wireless network for proper security configuration. While there are other th Moreover, it is intended for the more general audience of network installers and administrators, who want a way to easily and 3, quickly verify the security configuration of their networks, without having to 00 understand any of the details of the It has since In evolved and is still currently evolving very rapidly towards offering fast connection capabilities within larger areas.

However, this extension of physical boundaries NS provides expanded access to both authorized and unauthorized users that make it inherently less secure than wired networks. For the time being, WLAN users can protect their networks by practicing the suggested actions that are mentioned in this paper based on the cost and the level of security that they wish.

Secu rity Issu es and Solutions However, there will be no complete fix for the existing vulnerabilities.

All in all, the very best way to secure WLAN is to have the security knowledge, proper implementation, and continued maintenance. SlideShare Explore Search You. Submit Search. Successfully reported this slideshow. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads.

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Upcoming SlideShare. Like this presentation? Why not share! Embed Size px. Start on. Show related SlideShares at end. WordPress Shortcode. Full Name Comment goes here. They can be made to work with a minimum of effort without relying on specialized corporate installers.

Some of the business advantages of WLANs include: " Mobile workers can be continuously connected to their crucial applications and data; " New applications based on continuous mobile connectivity can be deployed; " Intermittently mobile workers can be more productive if they have continuous access to email, instant messaging, and other applications; " Impromptu interconnections among arbitrary numbers of participants become possible.

Unlike the wired network, the intruder does not need physical access in order to pose the following security threats: Eavesdropping This involves attacks against the confidentiality of the data that is being transmitted across the network.

In the wireless network, eavesdropping is the most significant threat because the attacker can intercept the transmission over the air from a distance away from the premise of the company.

Tampering The attacker can modify the content of the intercepted packets from the wireless network and this results in a loss of data integrity. Unauthorized access and spoofing The attacker could gain access to privileged data and resources in the network by assuming the identity of a valid user.The next section will explain the relation.

If you continue browsing the site, you agree to the use of cookies on this website. Feng Pan. If there is more than one In wireless AP in the organization, it is recommended to run them all into a common switch, then connecting the VPN server to the same switch.

Brute force attacks against access point passwords.