Auditing Wi-Fi Protected Access (WPA) Pre-Shared Key Mode
This article examined some of the vulnerabilities within WEP and WPA and provides the tools and method for auditing WPA pre-shared key mode passphrases. To do this, we examined the framework and flaws in WEP and reviewed the risks associated with using WPA-PSK passphrases of less than 20 characters. It has been demonstrated that although the method to crack the WPA-PSK is not trivial, it also is not beyond the reach of an average Linux user. Home users can lessen their security risks by using a passphrase significantly greater than 20 characters or, alternatively, by using WPA-Enterprise and incorporating an authentication server. Corporate users should implement an authentication server, use per-user keying and refrain from implementing WPA in PSK mode.
Resources for this article: /article/8405.
John L. MacMichael (CISSP, GSEC, CWNA) is a Naval Officer and Information Professional who works in the field of Information Assurance. He considers himself a journeyman Linux user and utilizes a variety of distributions both at work and home, including Slackware, Debian, Red Hat and several live distros; he has yet to find his favorite. He invites your comments at firstname.lastname@example.org.
Practical Task Scheduling Deployment
One of the best things about the UNIX environment (aside from being stable and efficient) is the vast array of software tools available to help you do your job. Traditionally, a UNIX tool does only one thing, but does that one thing very well. For example, grep is very easy to use and can search vast amounts of data quickly. The find tool can find a particular file or files based on all kinds of criteria. It's pretty easy to string these tools together to build even more powerful tools, such as a tool that finds all of the .log files in the /home directory and searches each one for a particular entry. This erector-set mentality allows UNIX system administrators to seem to always have the right tool for the job.
Cron traditionally has been considered another such a tool for job scheduling, but is it enough? This webinar considers that very question. The first part builds on a previous Geek Guide, Beyond Cron, and briefly describes how to know when it might be time to consider upgrading your job scheduling infrastructure. The second part presents an actual planning and implementation framework.
Join Linux Journal's Mike Diehl and Pat Cameron of Help Systems.
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- Non-Linux FOSS: Caffeine!
- Murat Yener and Onur Dundar's Expert Android Studio (Wrox)
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