New PDF release: 802.11 Security

By Bruce Potter

ISBN-10: 0596002904

ISBN-13: 9780596002909

Mention instant networks, and the query of defense will quickly stick with. it isn't striking that during spite of compelling enterprise arguments for going instant, many businesses are conserving again due to safeguard issues. yet, whereas it really is precise that instant networks create defense matters that do not exist in stressed out networks, the problems usually are not insurmountable. 802.11 Security indicates how one can plan for and effectively cope with safety hindrances on your instant deployment. This authoritative booklet not just explains the safety matters, yet exhibits you the way to layout and construct a your individual safe instant network.

802.11 Security covers the full strategy of construction safe 802.11-based instant networks, particularly, the 802.11b ("Wi-Fi") specification. The authors supply particular insurance of protection concerns detailed to instant networking, equivalent to instant entry issues (WAP), bandwidth stealing, and the troublesome stressed out similar privateness element of 802.11. you will the best way to configure a instant buyer and to establish a WAP utilizing both Linux or unfastened BSD. you are going to additionally locate thorough details on controlling community entry and encrypting buyer traffic.

Beginning with an creation to 802.11b as a rule, the ebook provides a huge foundation in concept and perform of instant defense, dispelling a few of the myths alongside the best way. In doing so, they supply you with the technical grounding required to consider how the remainder of the e-book applies on your particular wishes and occasions. subsequent, the e-book information the technical setup directions wanted for either the Linux and FreeBSD working platforms. many of the issues coated include:

  • Station safeguard for Linux, FreeBSD, Open BSD, Mac OS X and Windows
  • Setting Up entry element Security
  • Gateway safeguard, together with development Gateways, firewall principles, Auditing, etc.
  • Authentication and Encryption
  • FreeBSD IPsec patron and gateway configuration
  • Linux IPsec patron and gateway configuration
  • 802.1x authentication

802.11 Security is a publication whose time has come. while you're a community, defense, or platforms engineer, or an individual attracted to deploying 802.11b-based platforms, you will need this booklet beside you each step of the way.

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11b. 11b radio. The cordlessphone-induced noise can drop the SNR enough to bring down any WLAN network nearby. 4 GHz phones to replace their older 900 MHz models. After installing the phones, they noticed that they had many unexplained network outages. They also noticed an audible crackling noise on the phones. 11b network. This got rid of the interference and the outages. However, they learned the hard way that wireless technology is not necessarily plugand-play. There are also problems with a DoS from other networking protocols.

Unfortunately, keys for 40-bit RC4 encryption can be found through exhaustive searching (brute force) on modern commodity PCs. A 40-bit key has just over a trillion possible values. A modern PC can search that range to find the secret key in a matter of an hour or two. ps. In the paper, the team described a weakness in RC4 as it is implemented in the WEP protocol. The issue is not with RC4, but with the way it is used by WEP. The end result is that WEP can be cracked if enough traffic can be intercepted.

Chapter 12 has a more complete discussion of creating gateway firewalls with FreeBSD to protect the wireless network. 2 Disable unneeded services Unneeded services running on a host are one of the primary vectors for attackers to use to exploit machines. At the time of release for an operating system, there are generally no known security vulnerabilities in the default services. However, as time passes, security holes can be discovered in services and exploits can then be successfully written and executed against a vulnerable host.

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802.11 Security by Bruce Potter

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