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Chmod, Umask, Stat, Fileperms, and File Permissions

Unix file permissions are one of the more difficult subjects to grasp.. Well, ok maybe "grasp" isn't the word.. Master is the right word.. Unix file permissions is a hard topic to fully master, mainly I think because there aren't many instances when a computer user encounters them seriously, and bitwise is oldschool. This contains a listing of all possible permission masks and bits from a linux, php, and web hosting view.... cuz you guys AskApache Regs Rock!

Category: Security
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Terminal Escape Code Zen

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.

AskApache Conquers the 3rd Dimension in Bash

Category: Linux

Ultimate Htaccess Part II

Editing an Apache .htaccess file in VIM. Here is even more information from the Ultimate Htaccess Part I. For now this is very rough and you will want to come back later to read it.

Category: Htaccess

Magic in the Terminal: Screen, Bash, and SSH

Oh ya lets get it on! short but sweet

running htop in bash over ssh to different server

Category: Hacking

PHP Session File Hacks

What they say about kung-fu is true..

It can be attained by anyone through hard work over time. You can become as good as the amount of work you put in. Here's a short look at a basic technique that I use. Simply reverse engineering the source code and taking notes along the way...

static void php_session_send_cookie(TSRMLS_D)
  if (SG(headers_sent)) {
          if (output_start_filename) {
                  php_error_docref(NULL TSRMLS_CC, E_WARNING, "Cannot send session cookie - headers already sent by (output started at %s:%d)",
                          output_start_filename, output_start_lineno);
          } else {
                  php_error_docref(NULL TSRMLS_CC, E_WARNING, "Cannot send session cookie - headers already sent");
          }
          return;
  }
 
  /* URL encode session_name and id because they might be user supplied */
  e_session_name = php_url_encode(PS(session_name), strlen(PS(session_name)), NULL);

Category: PHP

30x Faster Cache and Site Speed with TMPFS

NOT a typo.. 30x is measurable, well-documented, and easily tested. This is what open-source is about. I haven’t had time to post much the past year, I'm always working! So I wanted to make up for that by publishing an article on a topic that would blow your mind and be something that you could actually start using and really get some benefit out of it. This is one of those articles that the majority of web hosting companies would love to see in paperback, so they could burn it.

Category: Optimization
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Custom bash_profile for Advanced Shell Users

Looking for some advanced uses for the shell? Here is some of my best. The shell is where 70% of my work takes place, and I have at least one terminal open almost 100% of the time, for viewing tailing color-coded logs, and of course for the SSH Tunnels that I use to route various networking through, like my email. So I decided that to standardize and create a bash_profile containing the most time-saving and helpful functions that I could use on all the various hosting environments would really be some sweet sugar, so here is my constant Work-in-progress.

It works for all shells I encounter, including BackTrack, Debian, Knoppix, Arch Linux, etc. Also works for many hosting environments I use including DreamHost, HostGator, WiredTree, and pretty much any linux VPS.

I also rely on this heavily from within shell scripts I write to access all the functions and stuff in this .bash_profile, and to do that I just do like:

#!/bin/bash
 
source ~/.bash_profile &>/dev/nulll
 
pm "PM is a function to output nice messages with color"
yn "Are you enjoying the shell" && pm "Thats great!" || pm "Perhaps you're better suited for DOS"
yn "Show Calendar" && aa_calendar
yn "Show Fortune" && aa_fortune

Category: Linux

Windows Optimization – Intense Part II

If you ever wanted to know the best way to defragment and speed up your Windows-Based PC, I mean you really wanted to know, here is the 2nd part to my article on Windows Speed Optimizing that details the process I have found works really well. Definately not a quick process, and certainly not the best ever, just my best ever and one that you only have to do once to get the benefits. This article has a lot of incredibly useful (and FREE) tools I recommend, which you can grab and use without reading the article..

Category: Windows

Crazy Advanced Mod_Rewrite Debug Tutorial

Note: Extremely ILL Content
Find the key to unlocking mod_rewrite and you WILL be sick.. sick with a diamond disease on your wrist!

Category: Htaccess

Hire AskApache

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An AskApache Plugin Upgrade to Rule them All

An AskApache Plugin Upgrade to Rule them AllSo my blog as been rather quiet for almost a year now, and very few updates if any have been released for my Password Protection PLugin, my Google 404 Plugin, and definately not for my AskApache CrazyCache plugin, which I will be releasing last... So for all of you who've helped me out by sending me suggestions and notifying me of errors and sticking with it... Just wanted to say sorry about that, and thanks for all the great ideas.. Well, I've been sticking with it as well believe it our not. I manage to get free days once in a while, and then its time to jam.

Category: WordPress

AskApache Debug Viewer Plugin for WordPress

AskApache Debug Viewer Plugin for WordPressThe story behind this plugin is sorta wack, but in a good way :). While doing tons of security research on permissions, authorization, access, etc.. for the Password Protection plugin (still being worked on), I needed to have unheard of debugging capabilities while working on the plugin on the various websites, webhosts, and test servers that I use to test in different environments. So I hacked together a bunch of php code that helped me debug, actually I pretty much went overkill and tried to get as much debugging info as programmatically possible, and it ended up being so much code that I took it out of my Password Protection code and made it its own plugin.

Category: WordPress

THE Ultimate Htaccess

Skip this - still under edit

I discovered these tips and tricks mostly while working as a network security penetration specialist hired to find security holes in web hosting environments. Shared hosting is the most common and cheapest form of web-hosting where multiple customers are placed on a single machine and "share" the resources (CPU/RAM/SPACE). The machines are configured to basically ONLY do HTTP and FTP. No shells or any interactive logins, no ssh, just FTP access. That is when I started examining htaccess files in great detail and learned about the incredible untapped power of htaccess. For 99% of the worlds best Apache admins, they don't use .htaccess much, if AT ALL. It's much easier, safer, and faster to configure Apache using the httpd.conf file instead. However, this file is almost never readable on shared-hosts, and I've never seen it writable. So the only avenue left for those on shared-hosting was and is the .htaccess file, and holy freaking fiber-optics.. it's almost as powerful as httpd.conf itself!

Most all .htaccess code works in the httpd.conf file, but not all httpd.conf code works in .htaccess files, around 50%. So all the best Apache admins and programmers never used .htaccess files. There was no incentive for those with access to httpd.conf to use htaccess, and the gap grew. It's common to see "computer gurus" on forums and mailing lists rail against all uses and users of .htaccess files, smugly announcing the well known problems with .htaccess files compared with httpd.conf - I wonder if these "gurus" know the history of the htaccess file, like it's use in the earliest versions of the HTTP Server- NCSA's HTTPd, which BTW, became known as Apache HTTP. So you could easily say that htaccess files predates Apache itself.

Once I discovered what .htaccess files could do towards helping me enumerate and exploit security vulnerabilities even on big shared-hosts I focused all my research into .htaccess files, meaning I was reading the venerable Apache HTTP Source code 24/7! I compiled every released version of the Apache Web Server, ever, even NCSA's, and focused on enumerating the most powerful htaccess directives. Good times! Because my focus was on protocol/file/network vulnerabilites instead of web dev I built up a nice toolbox of htaccess tricks to do unusual things. When I switched over to webdev in 2005 I started using htaccess for websites, not research. I documented most of my favorites and rewrote the htaccess guide for webdevelopers. After some great encouragement on various forums and nets I decided to start a blog to share my work with everyone, AskApache.com was registered, I published my guide, and it was quickly plagiarized and scraped all over the net. Information is freedom, and freedom is information, so this blog has the least restrictive copyright for you. Feel free to modify, copy, republish, sell, or use anything on this site ;)

Category: Htaccess

COMPUTER SECURITY TOOLBOX

List of mainly obscure security software geared more for the master pentester. These are mostly for unix, bsd, and mac and many are difficult to install and setup (require custom servers, inside access points, obscure libraries). Only programs that output data are included, so no actual exploits or anything. Most of these output extremely useful albeit extremely technical information.

Category: Security

Fsockopen Power Plays

PHP's fsockopen function lets you open an Internet or Unix domain socket connection for connecting to a resource, and is one of the most powerful functions available in the php language.

Category: PHP

Undetectable Sniffing On Ethernet

Invisible Undetected Sniffing on an Ethernet NetworkI have been in some tight spots where I had to sniff a password or two off the wire, or sniff some packets off the wire and based on the packets content perform some action... Accidentally, I stumbled on a method to sniff data while remaining undetected and invisible.

Category: Hacking

The Latest and Greatest php.ini

Grab the latest php.ini developmental version and discover new or previously hidden php runtime configuration settings... ahead of everyone else!

Category: PHP

Renaming Sponsored Links in AdSense

Google Sponsored LinksGoogle AdSense calles their AdSense Ads, "Sponsored Links", while Text-Link-Ads.com recommends "Sponsored By". Of course it is against the Google Adsense TOS to rename your ads, but in general, for non-adsense, what do you like to call your sponsored links?

Category: SEO

Awk Tutorial and Introduction

While researching a unix/linux tool awk I came upon one of the most thorough and helpful tutorials I've ever seen devoted to a particular topic. It's old-school just the way I like it. I contacted the author, Bruce Barnett because I just HAD to have this article for my readers, who are predominantly running solaris/unix/bsd/linux and he kindly gave permission.

Category: Linux

Website SEO Score Tool

Website Grader Logo (C)Check out this free online SEO site-scoring tool. The SEO generated report is simple, neat, and helpful. The main thing I like about it is how it is a stand-alone website, a residual money making machine.

Category: Software

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AskApache Liberty Policy

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Hacking and Hackers

The use of "hacker" to mean "security breaker" is a confusion on the part of the mass media. We hackers refuse to recognize that meaning, and continue using the word to mean someone who loves to program, someone who enjoys playful cleverness, or the combination of the two. See my article, On Hacking.
-- Richard M. Stallman


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