Download 802.11 Security by Bruce Potter PDF

By Bruce Potter

ISBN-10: 0596002904

ISBN-13: 9780596002909

Mention instant networks, and the query of safety will quickly keep on with. it isn't outstanding that during spite of compelling company arguments for going instant, many businesses are preserving again due to safeguard matters. yet, whereas it truly is precise that instant networks create safeguard concerns that do not exist in stressed networks, the problems aren't insurmountable. 802.11 Security exhibits how one can plan for and effectively deal with safeguard hindrances on your instant deployment. This authoritative publication not just explains the safety matters, yet indicates you ways to layout and construct a your personal safe instant network.

802.11 Security covers the full technique of development safe 802.11-based instant networks, particularly, the 802.11b ("Wi-Fi") specification. The authors supply specified assurance of safety matters targeted to instant networking, equivalent to instant entry issues (WAP), bandwidth stealing, and the troublesome stressed an identical privateness portion of 802.11. you will methods to configure a instant buyer and to establish a WAP utilizing both Linux or loose BSD. you will additionally locate thorough info on controlling community entry and encrypting buyer traffic.

Beginning with an advent to 802.11b generally, the booklet offers a huge foundation in conception and perform of instant defense, dispelling a number 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 publication applies on your particular wishes and occasions. subsequent, the publication information the technical setup directions wanted for either the Linux and FreeBSD working structures. a number of the themes coated include:

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

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

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Extra info for 802.11 Security

Example text

Php) consist of APs entered by individuals who have encountered them via various means including war driving. An attacker can query any of these public databases to determine nearby APs to use as a launching point. Illicit resource use is a risk for several reasons. An attacker may launch attacks against external servers. These attacks will be seen as originating from the IP addresses of the owner of the access point. If these exploits are detected by remote administrators, they will be tracked down to the owner of the AP.

This logging leaves an audit trail that allows you to examine network activity on your machine. Setting a verbosity limit in the kernel keeps an attacker from filling up your filesystem with data about what packets are being dropped. Assume you have a firewall rule that denies and logs all inbound HTTP traffic (port 80). An attacker then sends millions of packets to port 80 on your machine. Without a logging limit, each one of these packets would be sent to syslog and written to disk. Eventually, the filesystem containing your log files would fill up, and your machine would, in all likelihood, crash: options IPFIREWALL_DEFAULT_TO_ACCEPT Normally, the firewall denies all packets by default.

You can also use the setup and installation program /stand/sysinstall to enable and disable services through a menu-driven system. 3 Static ARP As documented in ARP Poisoning, there is a real threat from man-in-themiddle attacks due to ARP poisoning. A malicious user may be able to convince your workstation that her host is the gateway by forging spoofed packets. By putting a static ARP entry on your host, the effectiveness of this attack is minimized. Static ARP entries override any dynamic information received over the network.

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