Search For linux

30x Faster WP-Super Cache and Site Speed with TMPFS

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. Now ask yourself, if a webhost makes money based on how much memory, bandwidth, and data used by a customer, what would they not want their customers to do? That’s right, they do not want their customers to learn how to minimize and drastically reduce these moneymakers. They get giddy when you complain about slow-site-speed, or that it takes a long time for your site to load, because they have exactly the right answer- upgrade your memory, bandwidth, and data by purchasing a more expensive plan.

Tagged: Cache, devshm, filesystem, ram, ramdisk, ramfs, server, slram, speed, tmpfs | Continue...

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Tips and Tricks for a BASH Power Prompt

From setting the window title to show the last run command (filtered), saving your history and keeping multi-session history intact, resetting the color/cursor/highlighting of errant color-emitting commands, this prompt does more than meets the eye and is extremely fast.

Don’t have much time or just don’t care? No problem, this is a simple copy and paste of 2 lines and thats all there is to it!

Tagged: bash, bash_profile, Prompt, PROMPT_COMMAND, PS1, Shell, Shell History | Continue...

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PortaPutty Auto-Reconnecting SSH Tunnels on an Encrypted TrueCrypt Portable USB Key w GPG

Ok I just came back up to write the intro.. I’m trying to keep it short to avoid getting bogged down by the coolness of each step. Here is what goes on. When I logon to my XP machine at work, I bring my usb key and plug it in first. On logging a window pops up first and it’s a password prompt to mount my encrypted drive leonardo. It also checks a keyfile that is located on my usb key, but all I do now is type in my password. That causes my encrypted folder to be accessible to me like a normal drive, and it autoruns a startup batch file.

The batch file causes Portable versions of Firefox (all my bookmarks, my settings) to load, and launches Portable Mozilla Thunderbird (IMAP makes this work well), which is my favorite program (great GPG features and open-source!). Also Some Adobe CS4 software is loaded from the hard drive, like DreamWeaver. In the background, a service we created executes a PortaPuttY plink command to create forwarded tunnels from various remote servers and accounts, all using key-based encryption. These tunnels are automatically reconnected if they are disconnected, meaning you can use a socks 5 if you want or even better!

Part 1 of 5

Tagged: encryption, GPG, PortaPutty, Putty, ssh, ssh tunnels, TrueCrupt, tunnel, USB Drives | 4 Comments | Continue...

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grilled cheese jam session now online

Tagged: bayonetta, DreamHost, SilverSun Pickups, WiredTree, YouTube | 2 Comments | Continue...

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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

Tagged: .bashrc, advanced, alias, bash, bash alias, bash_profile, function, linux, scripts, shell script | 4 Comments | Continue...

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Optimizing Servers and Processes for Speed with ionice, nice, ulimit

To prepare for several upcoming articles on AskApache that are focused on optimizing Servers and Sites from a server admin level, here is an article to introduce the main tools that we will be using. These tools are used to optimize CPU time for each process using nice and renice, and other tools like ionice are used to optimize the Disk IO, or Disk speed / Disk traffic for each process. Then you can make sure your mysqld and httpd processes are always fast and prioritized.

Tagged: bash, chrt, CPU Scheduling, Disk IO, ionice, iostat, Nice, optimize processes, Renice, servers, Shell Scripting, taskset | 2 Comments | Continue...

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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..

Tagged: Defrag, Defragmentation, Deframenting, Disk IO, MyDefrag, PageDefrag, Registry Optimization, SpinRite, UltraDefrag, Windows XP | 5 Comments | Continue...

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Advanced WordPress wp-config.php Tweaks

The bottom line for this article is that I want to make WordPress as fast, secure, and easy to install, run, and manage because I am using it more and more for client production sites, I will work for days in order to solve an issue so that I never have to spend time on that issue again. Time is money in this industry and that is ultimately (time) what there is to gain by tweaking WordPress.

Note: I spent no time on readability, this is primarily a read the code and figure it out article.. This is for advanced users looking for a reference or discussion and for those of you looking to advance. Feedback would be great if you make it that far..

Tagged: admin, advanced, Cookies, debugging, htaccess, mod_rewrite, PHP, phpinfo, WordPress, wp-config.php | 4 Comments | Continue...

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Make Windows XP Blazingly Fast

Here is the basic process that I use to speed up Windows. A lot of good tips and tricks I’ve picked up over the past 15+ years of crashing and burning Windows that can transform your PC to be much faster than its ever been. The process focuses on freeing up RAM/Memory, freeing up your CPU/Processor, and optimizing your Hard Drive for a permanent solution.

Make sure to check out the free software I recommend at the end, installing them after this optimization process will keep your machine fast for a long time.

Tagged: File System, Hard Drive, pagefile, Windows XP Optimization | 12 Comments | Continue...

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Student under Criminal Investigation for Allegedly Sending Email

What is most surprising is how easy the police and authorities were able to break the law and flip the bird to the U.S. Constitution. A lot of people worry about government groups like the NSA having illegal access to data, but I don’t mind that.. I don’t care about the Chinese Government doing similar activity that much either.. The thing that I DO care about is this could happen to anyone.. It’s happened to me before but never to this extent with the courts.. This is NOT cool.

The police used inapplicable criminal laws as a basis for a fishing expedition to determine the author of an anonymous email,” said EFF Senior Staff Attorney Matt Zimmerman. “Now, this student has been suspended from his job, and he is without a laptop and other devices he needs to do his schoolwork. His private communications and papers are in the hands of police who are searching for evidence without just cause. Even his cell phone and iPod were taken, clearly an overreach if the goal is tracking the source of an email.

This search warrant is invalid, as there is no probable cause that a crime was committed at all… Every day this student’s private information is in the hands of the police department, he suffers harm to his property interests and his constitutional rights.

The dorm room search stemmed from an investigation into who sent an email to a Boston College mailing list alleging that another student was gay. Police say they know who sent the email and that the sender committed the crimes of “obtaining computer services by fraud or misrepresentation” and obtaining “unauthorized access to a computer system.” However, nothing presented by the investigating officer to obtain the warrant, including the allegation that the student sent…

Tagged: electronic frontier foundation | Continue...

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Ultimate Htaccess Tutorial for .htaccess files

This is not an introduction to .htaccess… This is the evolution of .htaccess… The BEST, the ORIGINAL, the NEWEST, and the most HIGHEST, FLYEST .htaccess tricks I can find.

Originally known as the “Ultimate .htaccess Guide”, its changed over the years by adding new .htaccess tricks and .htaccess examples to it.. I also add my favorite .htaccess links, the best .htaccess articles on AskApache, the coolest .htaccess experiments, the Web’s best .htaccess hacks, and update this article on the regular.

Tagged: .htaccess examples, Apache, Cache, caching, Files, FilesMatch, Google, Hacking, howto, htaccess, htaccess guide, htaccess help, htaccess howto, htaccess rewrite, htaccess tricks, htaccess tutorial, httpd, litespeed, mod_rewrite, Mod_Security, rewritecond, rewriterule, sample .htaccess, Security, SEO, seo secrets, SetEnvIf, ssl, ultimate htaccess | 56 Comments | Continue...

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Advanced .htaccess Tricks for Securing Sites

This is all new, experimental, and very very cool. It literally uses .htaccess techniques to create several virtual “locked gates” that require a specific key to unlock, in a specific order that cannot be bypassed. It uses whitelisting .htaccess tricks to specify exactly what is allowed, instead of trying to specify everything that isn’t allowed. Also, by setting specific cookies/tokens after successfully passing through a gate, we can then require the exact cookie/token from the previous gate, which stops an attacker from skipping or bypassing gates.

Tagged: advanced, Hacking, htaccess, mod_rewrite, phpBB, Security, ssl | 7 Comments | Continue...

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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. I’ve done a lot of research on it the past couple weeks… and now here’s everything I’ve learned so far.. cuz you guys AskApache Regs Rock!

Tagged: chmod, File Permissions, fileperms, Hacking, Security, stat, umask | 5 Comments | Continue...

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Optimize a Website for Speed, Security, and Easy Management

Learn how to setup, configure, secure, optimize, and create a low-maintenance website the AskApache way. I’m piecing together all the hacks, tricks, methods, and ideas discussed throughout this blog and all across Netdom and glueing them all together to show you how to have the most optimized, crazy fastest, and best website setup I can think of.

Tagged: Apache, Cache, compression, hosting, htaccess, optimization, Security, server | 5 Comments | Continue...

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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.

3 Comments | Continue...

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About AskApache

Purpose and Goal of AskApache
To provide free access to knowledge and data with the goal of empowering people.. or more melodramatically: “Power to the People!”
Why the name AskApache? AskApache was chosen to show and pay respect to the contributors of the Apache Web Server. Literally it means to ask Apache when facing a problem, by searching the Open-Source, contacting a board/list, or browsing the documentation.
The Author
I work for a multimedia production / brand development & marketing company here in Indianapolis, the greatest city in the world! I started this blog in Dec., ‘06 to familiarize myself with WordPress as a blogging platform among other things for my job. I help expand/create a growing companies market-share online (and offline) by managing and building the brand and developing high-quality leads and loyal customers by building online funnels fed by SEO traffic and on/offline marketing campaigns. Other than the design and development costs for our minimum 12 month contract, we operate using a gain-share formula where we receive a percentage of the increased revenue that results from our services. This translates to fanatical attention to improving the bottom-line, and focus on long-term sustainable growth and overall success.
It’s important to me to note that unlike most systems set up like this, we are absolutely interested in creating customers/leads/whatever by providing real value for them. It’s much more difficult and takes a lot longer, but it is also self-sustaining as value attracts in an exponential manner. We are likely different than any model you’ve seen before in terms of lead-sales-marketing types.
My Background
I started on DOS, then Windows 2.11 (released 1989), and learned BASIC for my first language… then IBM PC assembly followed by Java, which I used as an excuse to stop learning assembly.. …

5 Comments | Continue...

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Elite Log File Scrolling with Color Syntax

Scrolls the latest log entries for multiple log files to the current screen or to any other monitor or TTY in color using syntax highlighting, making debugging easier and saving a lot of time for multi-monitor workstations.

Tagged: bash, CCZE, Color Logs, debugging, Elite, error log, fifo, linux, Logs, shell script | 2 Comments | Continue...

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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.

Tagged: Cache, Fsockopen, Hacking, HTTO, linux, Networking, Performance, PHP, Pipelining, Socket | 3 Comments | Continue...

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Automated Folder Backup Shell-Script

This simple unix shell script automatically creates backups of a specific folder at regular hourly, nightly, weekly, and monthly intervals. Instead of the usual method for copying directory trees using tar with fifo, pipes, rsync, or NFS methods this script uses cpio which is much much faster and has cool options like saving m/a/c times, symlinks, relative paths, and weird file names.

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Upgrading to DreamHost Private Servers

DreamHost PS gives you your own “virtual machine”, protecting your CPU and RAM on your physical machine for faster websites. Here’s what I like and dislike about DreamHostPS, and some of the issues and solutions for migrating.

14 Comments | Continue...

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Undetectable Sniffing On Ethernet

I 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.

Tagged: Ethernet, Hacking, linux, nsa, Sniffing, Undetectable, wireshark | Continue...

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Hacking VLAN switched networks

There isn’t much vlan info on the net in terms of specifics and I had to learn all about it because I needed to log in to a switch that was on a different vlan. With the help of the Ettercap developers NaGA and ALoR I figured it out.

Tagged: Hacking, VLAN | 1 Comment | Continue...

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Firefox Adsense WordPress Plugin

If your WordPress blog uses AdSense, and you love Firefox you will love this plugin. When a user downloads and installs Firefox through your referral, we’ll credit your account with up to $1.00 (more details).

16 Comments | Continue...

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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.

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What I think about DreamHost Web Hosting

You may have noticed that we do things a little differently around here. There’s a reason for that.

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Pen-testing Security Tools

While testing the exploitability of your target and mapping out vulnerabilities it is important to gain access inside the targets defenses so that you can establish an internal foothold like a owned box or switch. This is so you can use a tool to discover the packet-filtering being used, and literally map out the firewall/IDS rules. Needless to say that really provides you with a lot more complete vulnerability assessment to help discover more weak spots in the system.

1 Comment | Continue...

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SEO with Robots.txt

Very nice tutorial dealing with the robots.txt file. Shows examples for google and other search engines. Wordpress robots.txt and phpBB robots.txt sample files.

13 Comments | Continue...

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Website SEO Score Tool

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.

4 Comments | Continue...

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Freshen your Anti-virus, Anti-Rootkits, and Anti-Spyware

I’ve tried 100’s of Anti-virus, Anti-Rootkit, and Anti-Spyware tools over the last 10 years, but it’s always good to re-examine your system’s security every couple of months.

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Firefox, Firebug, and yslow are REQUIRED

A lot of the past and upcoming articles on AskApache are focused on speeding up a server or website, or just making things more efficient. I’m starting several speed tip articles that require the following 3 programs if you want to follow along, that is… if you can keep up! ;)

1 Comment | Continue...

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Troubleshooting Apache .htaccess Authentication

Apache Web Server users have problems getting Apache Authentication/password-protection in htaccess working, this is a troubleshooting guide to get Password Protection working!

1 Comment | Continue...

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Disclaimer and License Info

Please, read the definitions page before continuing.
The AskApache website layout, all articles/posts/pages and syndication feeds are published under a Creative Commons Attribution 3.0 License. Here is the full Legal Code. Please read the license documents thoroughly before using any published work.
In short, according to the forementioned license:

Attribution – You must attribute the work in the manner specified by the author or licensor. This info is outlined below.

Copyright
The author retains full copyright of all published content, unless an article, excerpt or code snippet is attributed to another author.
Attribution Guidelines
This section explains how you should attribute our work.
In the case you use excerpts of our articles, you should attribute the excerpt to the original article’s author and include one HTML hyperlink to the full version of the original article on AskApache.com.
In the case you republish or reproduce our articles in their entirety or publish derivative works, you must attribute the work using English language according to the following scheme:
by is based on by and is released under the terms of the
should be a HTML hyperlink to the full version of the original article on AskApache.com and should be a HTML hyperlink to our homepage (http://www.askapache.com/). The hyperlinks must not be hidden or invisible, either by a bad color scheme or by a small font size.
Additional Licensing Info
For all content that has been published under the Creative Commons Attribution 3.0 License the following additional restrictions/conditions also apply and should be strictly followed:

This work or any derivative works cannot be sub-licensed. Only a license identical to this one can be used.
This work or any derivative works cannot be used for any kind of promotion of any product or service, free or commercial.
All the above conditions and guidelines can be waived only by the author’s…

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Want to know how to really hack?

An interesting post by a computer hacker explaining how to really hack.

5 Comments | Continue...

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Custom Webmaster Shell Environment

Webmasters often use SSH to remotely admin web sites and servers, learn how to make your shell colorful and powerful using my sample .bash_profile and you can be up and running in 30 seconds!

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Install multiple OS Without Cds

I had a CD-RW drive but being a struggling computer security researcher I had no money for blank cd-recordables. What follows is how I managed to install various operating systems on my computer (1 hard drive) without having to burn to a CD the ISO and then boot from that.

7 Comments | Continue...

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Changing Any Password On XP

This quick tutorial will show you the steps to change and reset any user password on a windows computer, and also show you how to protect your computer from people doing this to you!

13 Comments | Continue...

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Best-practice Web Design Process

Web Design Process
I have spent a considerable amount of time investing in learning best-practices for modern web-design..
(as defined by the World Wide Web Consortium) This basically means that I can rapidly make changes to a site.
Let me break down the process
I use XHTML to structure the code on the webpage. I then use CSS (cascading style sheets), to style the XHTML, this creates the presentation. All that is left is for the client to supply the content that I plug into the XHTML.
XHTML == structure
CSS == presentation
CONTENT == content
SCRIPTS == dynamic structure/presentation/content
It is a very modularized way of designing web-pages. By using CSS, I can change 1 line of code and the effect is an instant change throughout the entire site.
Web Programming Languages
The programming languages that I use are php, unix shell scripts, perl, python, ocaml, and javascript.
I also rely and depend heavily on the open-source Apache web server. Coming from a background of computer security and linux/unix, I am very glad to go with a non-windows Apache environment. You can forget about worrying about virii and other attacks! I use Apaches .htaccess to do a number of things. One use is automatically changing all non-www urls to www urls. Another big thing it does is allow me to specify that pages that end in .htm will be processed as if they included php code. Which is how I am able to call scripts to execute from within the page, all transparent to the end-user, who cannot see the php source code, only the result.
Optimizing for speed and accessiblity
I am very much concerned with optimizing web-pages for speed and accessibility. If you view the webpage with images disabled (use…

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Apache Web Server Speed Configuration Hacks

Apache server performance can be improved by adding additional hardware resources such as RAM, faster CPU, etc.

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Speed Up Sites with php Caching

This explains the basic methods to get started caching with php headers

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Port Redirector

can you please suggest me any tiny and good port redirector
for linux and unix like oses ?
so that when I connect to the box to a given port it redirects my connection
to another box and port that I can chose ?
thanx a lot

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