Validating wireless network
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WPA2 provides strong encryption (with the Advanced Encryption Standard [AES]), dynamic key exchange, and strong authentication (with 802.1X).We recommend the following best practices: Note that PSKs are vulnerable to offline dictionary attacks and can be compromised by employees who share the PSK, either accidentally or deliberately, with non-employees.
Another intrusion attack is an ad hoc connection whereby a station can associate with another station independent of an AP.In this case, the enterprise uses the VPN authentication mechanism, such as using extended authentication (XAUTH) with the Challenge-Handshake Authentication Protocol (CHAP) to authenticate users. EAP is an authentication framework that defines a way to encapsulate different authentication methods.We recommend the EAP types listed in Table 1 because they are widely available and exhibit low to moderate risk.For example, "use Wi-Fi Protected Access 2 (WPA2) security" is a technology best practice, whereas "train employees not to connect to ad hoc WLANs" is a procedural best practice.Network discovery Network intruders use a variety of methods to discover the existence of WLANs and their corresponding service set identifiers (SSIDs).This E-Guide defines best practice as a methodology that is commonly used, cost effective, and applicable to virtually all enterprises.
The term "practice" refers to technologies and procedures.Neither action actually reduces the likelihood that an intruder will discover the WLAN.We recommend the following best practices: Some high-risk enterprises may want to use directional antennas in order to have greater control over signal propagation compared with omni-directional antennas.In addition, PSKs are very difficult to administer on large networks because when the PSK is changed (e.g., when an employee leaves the company), every client on the network must be configured with the new PSK. This lesson describes methods to protect your network from attack and provides denial-of-service best practices.Denial of service Any event that prevents authorized users from performing appropriate functions may be considered a denial-of-service (Do S) attack.Lessons 2 and 3 focus on how to protect users and the network, respectively. Federal Treasury may be different from best practice for a fast-food retailer.