Building the Perishable Press 4G Blacklist
Last year, after much research and discussion, I built 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. Unfortunately, these mega-lists eventually 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 […] Continue reading »
Latest Blacklist Entries
Recently cleared several megabytes of log files, detecting patterns, recording anomalies, and blacklisting gross offenders. Gonna break it down into three sections: User Agents Character Strings IP Addresses User Agents User-agents come and go, and are easily spoofed, but it’s worth a few lines of htaccess to block the more persistent bots that repeatedly scan your site with malicious requests. # Nov 2010 User Agents SetEnvIfNoCase User-Agent "MaMa " keep_out SetEnvIfNoCase User-Agent "choppy" keep_out SetEnvIfNoCase User-Agent "heritrix" keep_out SetEnvIfNoCase User-Agent […] Continue reading »
5-Minute PNG Image Optimization
A great way to improve the performance of your site is to optimize the size of your images. Smaller image sizes require less bandwidth, disk space and load time, and ultimately improve visitor experience. In this article, I share my effective 5-minute technique for optimizing PNG images. This is a two-step, lossless optimization process that removes as much extraneous data as possible without sacrificing any image quality whatsoever. It’s fast, free, and highly effective. Continue reading »
Multiple Loops and Multiple Columns with WordPress, (X)HTML and CSS
Recently, I have been getting a lot of requests for multiple-loop configurations in WordPress. It seems that multiple-column, multiple-loop configurations are in high demand these days, especially ones that display posts like this: First column, first loop: display posts #1-5 Second column, second loop: display posts #6-10 Third column, third loop: display posts #11-15 Using WordPress and a little CSS, this configuration is relatively easy to accomplish. Let’s cut right to the chase.. Continue reading »
Temporary Site Redirect for Visitors during Site Updates
In our article Stupid htaccess Tricks, we present the htaccess code required for redirecting visitors temporarily during periods of site maintenance. Although the article provides everything needed to implement the temporary redirect, I think readers would benefit from a more thorough examination of the process — nothing too serious, just enough to get it right. After discussing temporary redirects via htaccess, I’ll also explain how to accomplish the same thing using only a small slice of PHP. It’s like two […] Continue reading »
jQuery Accordion Menu Tutorial
In this tutorial I am going to show you how to build a jQuery accordion menu from scratch. Most of the time it is possible to create very functional website navigations with just CSS, but this time we are going to need a little jQuery magic to accomplish the accordion functionality. For this tutorial I am going to assume that you have some experience with HTML and CSS. I will go over all the code, but the main focus of […] Continue reading »
Block Multiple IP Addresses with PHP
Let’s face it. There’s just as much scum on the Internet as there is out there in the “real world.” Maybe even more, who knows. From scammers and spammers to scrapers and crackers, the Web is just crawling with all sorts of pathetic scumbags. As predictably random as much of the malicious activity happens to be, it is virtually guaranteed that you will be hounded by at least a few persistent IP addresses that, for whatever reason, have latched on […] Continue reading »
URL Character Codes
URLs frequently employ potentially conflicting characters such as question marks, ampersands, and pound signs. Fortunately, it is possible to encode such characters via their escaped hexadecimal ASCII representations. For example, we would write ? as %3F. Here are a few more URL character codes (case-insensitive), for easy copy/paste reference. Continue reading »
Unobtrusive JavaScript: 5 Ways to Remove Unwanted Focus Outlines
I recently wrote about how to remove unwanted link outlines using a pure-CSS method that works on every modern browser except (wait for it) ..Internet Explorer 6! Yes, that’s right, another reason why (almost) everyone is pushing hard to eliminate Internet Explorer from existence. Nonetheless, removing those pesky unwanted link outlines in IE6 is not possible with CSS, but it’s a snap with a little JavaScript. Here are four unobtrusive JavaScript techniques (plus one CSS-only method thrown in for good […] Continue reading »
Print Version of Digging Into WordPress!
Nearly six weeks after releasing the electronic/digital version of Digging Into WordPress, Chris and I are proud to announce that the printed version is now available from the DigWP.com Bookstore. Continue reading »
Better WordPress Archives via Dynamic Triple Column Layout
Here at Perishable Press, the number of posts listed in my archives is rapidly approaching the 700 mark. While this is good news in general, displaying such a large number of posts in an effective, user-friendly fashion continues to prove challenging. Unfortunately, my current strategy of simply dumping all posts into an unordered list just isn’t working. I think it’s fair to say that archive lists containing more than like 50 or 100 post titles are effectively useless and nothing […] Continue reading »
Pimp Your 404: Presentation and Functionality
I have been wanting to write about 404 error pages for quite awhile now. They have always been very important to me, with customized error pages playing a integral part of every well-rounded web-design strategy. Rather than try to re-invent the wheel with this, I think I will just go through and discuss some thoughts about 404 error pages, share some useful code snippets, and highlight some suggested resources along the way. In a sense, this post is nothing more […] Continue reading »
WordPress Plugin: GA Google Analytics
I’ve joked that there a million different Google Analytics WordPress plugins available, but I’ve never been able to find one that’s just dead-simple, plug-n-play, and with clean code and markup, so I wrote my own that does just that: a no-frills way to add the new Google Analytics asynchronous tracking code to all pages on your WordPress-powered site. This analytics plugin is lightweight, fast, and now has over 50,000 80,000 active users via WordPress.org. Continue reading »
List All Files and Folders Recursively via Terminal
From time to time I have occasion to generate a list all WordPress files or similar. As I’m not an expert in Terminal, it took awhile to figure out the magic recipe.. now having collected some useful commands, I want to post ‘em for future reference. Continue reading »
WordPress Tip: Valid, SEO-Friendly Email Permalink Buttons
In addition to your choice collection of “Share This” links, you may also want to provide visitors with a link that enables them to quickly and easily send the URL permalink of any post to their friends via email. This is a great way to increase your readership and further your influence. Just copy & paste the following code into the desired location in your page template: <a href="mailto:?subject=Fresh%20Linkage%20@%20Perishable%20Press&body=Check%20out%20<?php the_permalink(); ?>%20from%20Perishable%20Press" title="Send a link to this post via email" rel="nofollow">Share […] Continue reading »
Creating the Ultimate .htaccess Anti-Hotlinking Strategy
When I wrote my article, Stupid htaccess Tricks, a couple of years ago, hotlink-protection via htaccess was becoming very popular. Many webmasters and bloggers were getting tired of wasting bandwidth on hotlinked resources, and therefore turned to the power of htaccess to protect their content. At that time, there were only a couple of different hotlink-protection methods available on the internet, and the functional difference between them was virtually insignificant. All that was necessary for up-and-coming bloggers-slash-site-administrators to eliminate leaking […] Continue reading »
