By Bruce Potter
Mention instant networks, and the query of safety will quickly stick with. it isn't dazzling that during spite of compelling enterprise arguments for going instant, many businesses are keeping again due to defense issues. yet, whereas it is precise that instant networks create defense matters that do not exist in stressed networks, the problems aren't insurmountable. 802.11 Security indicates how one can plan for and effectively cope with protection hindrances on your instant deployment. This authoritative publication not just explains the protection concerns, yet exhibits you ways to layout and construct a your personal safe instant network.
802.11 Security covers the complete means of construction safe 802.11-based instant networks, specifically, the 802.11b ("Wi-Fi") specification. The authors supply specified insurance of protection matters certain to instant networking, akin to instant entry issues (WAP), bandwidth stealing, and the problematical stressed similar privateness element of 802.11. you will easy methods to configure a instant customer and to establish a WAP utilizing both Linux or loose BSD. you are going to additionally locate thorough info on controlling community entry and encrypting buyer traffic.
Beginning with an advent to 802.11b usually, the ebook can provide a large foundation in concept and perform of instant protection, dispelling the various myths alongside the best way. In doing so, they supply you with the technical grounding required to contemplate how the remainder of the ebook applies on your particular wishes and events. subsequent, the booklet information the technical setup directions wanted for either the Linux and FreeBSD working structures. many of the subject matters coated include:
- Station safeguard for Linux, FreeBSD, Open BSD, Mac OS X and Windows
- Setting Up entry aspect Security
- Gateway safeguard, together with development Gateways, firewall ideas, Auditing, etc.
- Authentication and Encryption
- FreeBSD IPsec buyer and gateway configuration
- Linux IPsec purchaser and gateway configuration
- 802.1x authentication
802.11 Security is a ebook whose time has come. while you are a community, defense, or platforms engineer, or an individual attracted to deploying 802.11b-based platforms, you will want this ebook beside you each step of the way.
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Extra info for 802.11 Security
An attacker generates massive amounts of ICMP traffic destined for the victim network. ) This usually saturates the victim's WAN links. By cutting off the victim's LAN from the rest of the Internet, the attacker has denied access to any services that reside on the victim's LAN. 4 Data-Link (OSI Layer 2) A data-link DoS can target either a host or a network. Data-link attacks are launched to disable the ability of hosts to access the local network even though the hosts are still connected. An example of this would be flooding a non-switched Ethernet network with invalid frames.
Unlike a wired network where there is usually evidence of a physical attack (destroyed cabling, removed cable, attackers on video surveillance cameras), there are no visible signs that something has changed. 11 PHY specifications define a limited range of frequencies for communication. 11 devices that use a specific PHY are constrained to these frequency ranges. 11 frequency bands with noise. If the attacker can create enough RF noise to reduce the signal-to-noise ratio to an unusable level, then the devices within range of the noise will be effectively taken offline.
1 replies with its MAC address. 1. In order to reduce the number of ARP requests, many modern operating systems implement a lazy technique to learn MAC addresses. 1. 1. An attacker can force packets to go through a malicious host by exploiting this lazy mechanism of learning MAC addresses. 1). The attacker and both target hosts are on the same network. The attacker sends an ARP reply packet to the client machine with a source IP of the server but with a source MAC of the malicious machine. 1 to that host.
802.11 Security by Bruce Potter