I discovered these tips and tricks mostly while working as a network security penetration specialist hired to find security holes in web hosting environments. That is when I started examining htaccess files in great detail and learned about the incredible untapped power of htaccess. The only avenue on shared-hosting was and is the .htaccess file, and holy freaking fiber-optics.. it's almost as powerful as httpd.conf itself

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While reading up on gethostbyaddr on PHP.net, I saw a nice idea for using fsockopen to connect over UDP port 53 to any Public DNS server, like Google DNS 8.8.8.8, and sending the reverse addr lookup in oh about 100 bytes, then getting the response in oh about 150 bytes! All in less than a second. This is how/why to read/write data directly to the wire! This would be extremely valuable for use in things like my online header tool because it's faster than any other method. As usual, I went a bit overboard optimizing it to be lean and fast.

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This is a big update from the last time I looked into this, when I enumerated 57 Status Codes that Apache 2.x was capable of handling. This list contains 83 Status Codes recognized by Apache. I compiled the latest 2.4.4 Apache in order to view the actual codes sent by a live server.. very cool. You can read about the newest HTTP Status Codes in RFC 6585.

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We've figured out what mod_rewrite variables look like, a cheatsheet of the actual value.

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Quick and easy method to get a list of all Apache Modules currently loaded, a list of all the directives each module provides, a list of currently used directives, etc... These directives can be used in httpd.conf and/or .htaccess files so it is definately useful to know which ones are available and which ones are currently being used.

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These are a few of the mod_rewrite uses that BlogSecurity declared pushed the boundaries of Mod_Rewrite! Some of these snippets are quite exotic and unlike anything you may have seen before, also only for those who understand them as they can kill a website pretty quick.

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FYI, using the Mod_Rewrite Variables Cheatsheet makes this example, and all advanced .htaccess code easier to understand. This demo lets you set a cookie with 1 of 3 values, then you just request the pdf file with a normal link click and get 1 of 3 different responses. This is accomplished with a nice bit of .htaccess code.

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An image and technicacl achievement so profound, it will touch yoour heart.. So 3D... it'll hurt you eyes! LOL.. lol.. Man I am cracking up here. haha Ha definately the best intro ever, those really do look 3D for terminal though huh.. Sweet. Here is the little function I wrote to output that grey marble.

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