By Lee Barken
You can now have the remarkable advantages of instant LANs with no falling sufferer to their infamous safeguard flaws. prime instant defense specialist Lee Barken exhibits you sensible workarounds and fixes for the vulnerabilities in brand new WLANs, introduces high-security instant protocols new to undefined, and gives step by step directions for safeguarding your whole instant info, from the house to the enterprise.This is the definitive and easy-to-use WLAN defense ebook you have been looking for-whether you are a community administrator,security expert, supervisor, or domestic consumer.
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Additional resources for How Secure Is Your Wireless Network? Safeguarding Your Wi-Fi LAN
In this chapter, we reviewed how WEP and XORing work to help you understand the problems and go beyond the "WEP is Bad" headlines. The underlying encryption engine used by WEP is RC4, which is widely used in various Internet protocols including secure Web pages (HTTPS). When it comes to WEP flaws, the problem isn't RC4. The problem is the way that RC4 is implemented. In particular, the implementation of IVs is flawed because it allows IVs to be repeated and hence, violate the No. 1 rule of RC4: Never, ever reuse a key.
1x and Temporal Key Integrity Protocol [TKIP]) and other parts were not (such as Advanced Encryption Standard [AES] and secure deauthentication/disassociation). 11i specification is ratified (which would not happen for another year or two at best), therefore, let's take the parts that are ready for prime time and release them now. 11i that can be accomplished via software and firmware upgrades. 1x). 11 protocol. 11i, WPA, TKIP, and AES. 1x. By developing a deeper understanding of how these protocols work, you will be in a better position to deploy enhanced security solutions in a variety of configurations.
1x negotiation. The encryption key is called the Temporal Key (TK). ) The integrity key is called the Message Integrity Code (MIC) key. First, the sender's MAC address is XORed with the TK to create the Phase 1 key (sometimes called the intermediate key). The Phase 1 key is then mixed with a sequence number to produce the Phase 2, per-packet key. The output of Phase 2 is handed over to the WEP engine as a standard 128-bit WEP key (IV + shared secret). The rest of the process occurs as a normal WEP transaction.