New book on WordPress Theme Development: WordPress Themes In Depth
2008 May 13
Daily Archive

Perishable Press 3G Blacklist

After much research and discussion, I have developed a concise, lightweight security strategy for Apache-powered websites. Prior to the development of this strategy, I relied on several extensive blacklists to protect my sites against malicious user agents and IP addresses. Over time, these mega-lists became unmanageable and ineffective. As increasing numbers of attacks hit my server, I began developing new techniques for defending against external threats. This work soon culminated in the release of a “next-generation” blacklist that works by targeting common elements of decentralized server attacks. Consisting of a mere 37 lines, this “2G” Blacklist provided enough protection to […] Read more »

Building the 3G Blacklist, Part 5: Improving Site Security by Selectively Blocking Individual IPs

In this continuing five-article series, I share insights and discoveries concerning website security and protecting against malicious attacks. Wrapping up the series with this article, I provide the final key to our comprehensive blacklist strategy: selectively blocking individual IPs. Previous articles also focus on key blacklist strategies designed to protect your site transparently, effectively, and efficiently. In the next article, these five articles will culminate in the release of the next generation 3G Blacklist. Improving Site Security by Selectively Blocking Individual IPs The final component of the 3G Blacklist establishes a vehicle through which individual IPs may be blocked. As […] Read more »

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