Two well known Debian developers have written the Debian Administrator’s Handbook. It is now available in paper back as well as ebook formats. Check it out! http://debian-handbook.info/2012/the-debian-administrators-handbook-is-available/
The dig command is commonly used to make DNS queries. However, a much overlooked command is the host command. Here are some quick tips for a useful tool to add to your bag of tricks or to impress your friends. The syntax is: $ host [domain.com] When run with no options, a simple quick summary
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Linux web hosting is popular but that also makes Linux a target for malware and other malicious hacking. Here is a write up pointing out some general best practices for Linux web servers: The Importance of Securing a Linux Web Server If you find this topic interesting, you may also be interested in Linux Boot
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This is an awesome episode of Hak5. Check it out!
Shodanhq.com is awesome. These are fun: http://www.shodanhq.com/search?q=X-Powered-By%3A+PHP%2F5.1.2 Many sites running old PHP from 2006. Edit as desired to find an old php target. http://www.shodanhq.com/search?q=X-AspNet-Version%3A+1.1.4322 Incredible how many sites still use ASP .NET 1.x http://www.shodanhq.com/search?q=%22cisco-ios%22+%22last-modified%22 Web management pages for Cisco devices that have authentication disabled. http://www.shodanhq.com/search?q=Server%3A+Microsoft-IIS%2F5.0+ IIS 5.0 http://www.shodanhq.com/search?q=Server%3A+Apache%2F1. Ancient versions of Apache still in use
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Web management interfaces are an often neglected area in regards to security. Here is a good write up demonstrating how easy it is to find vulnerable web management logins for hacking as well as some best practices: Security Dangers of Web Management Interfaces If you find this topic interesting, you may also be interested in
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