Search For Socket

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...

---

---

---

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...

---

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...

---

An AskApache Plugin Upgrade to Rule them All

So 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.

Tagged: AskApache Google 404, AskApache Password Protection, Fsockopen, WordPress Plugins, wordpress security | 1 Comment | Continue...

---

AskApache Debug Viewer Plugin for WordPress

The 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.

Tagged: debugging, wordpress development | 1 Comment | Continue...

---

Password Protection Plugin Status

Enumerating Permissions can be Annoying

Don’t ask me how because I won’t tell you, but on one of the hosts I was testing on that did not allow direct access I was able to get the Apache server running as dhapache to erroneously write a file into my users blog directory. This is a big security no-no and I now have my .htaccess file written into the blog directory where it should go, but instead of my php script’s user having write access to the file so I can modify it, its owned by dhapache! Because the file is owned by dhapache I shouldn’t even be allowed to know it exists, but there it is. So the next step was to try and take ownership of the .htaccess file so that I could modify it. I tried and tried but was unsuccessful, I couldn’t modify it so that was another dead end. Actually it took me awhile to figure out how to remove the file from my directory. Being that it was owned by dhapache I couldn’t delete or modify it using my php process or even through ftp/ssh! Sysadmins regularly run find commands that search the servers for any files owned by dhapache that should not be there as this is a big red flag that someone has found a way to manipulate dhapache which could potentially lead to modifying dhapache-owned server config files, which sometimes is all it takes to hack your website and server.. Luckily I was able to delete it by basically running the hack again to overwrite the file.

Tagged: .htaccess plugin, Apache, askapache, htaccess, password protection, Security, WordPress | 2 Comments | Continue...

---

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...

---

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...

---

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...

---

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...

---

Faster Form Submission and Processing with fsockopen

Part II: Example illustrating how to speed up GET/POST form submissions. Uses fsockopen to initiate a server-side background request to process the submitted data, so that the result page of the form is displayed to the client lightningly quick.

Tagged: Forms, Fsockopen, optimization, PHP | 3 Comments | Continue...

---

Faster POST and GET Form Submissions… Shazam

Just a very brief look at speeding up form submission by delegating the processing and bandwidth to your server, not your client.

Tagged: Bottleneck, form, Form Submit, Fsockopen, GET, http, PHP, post, Snoopy | 1 Comment | Continue...

---

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!

Continue...

---

Apache Directives and Modules on DreamHost

Apache .htaccess Directives and Loaded Modules allowed on DreamHost Apache Server 2 Setups.

Continue...

---

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...

---

Story by Author of PING for UNIX

Yes, it’s true! I’m the author of ping for UNIX. Ping is a little thousand-line hack that I wrote in an evening which practically everyone seems to know about. :-)

Continue...

---

If you can crash your daemon, you likely have a security problem

Tons of awesome tips and tricks using netcat. Port redirector, nessus wrapper, capture exploits being sent by vuln scanners, etc. This is very useful for doing stuff like redirecting traffic through your firewall out to other places like web servers and mail hubs, while posing no risk to the firewall machine itself.

Continue...

---

Downloading Multiple Files with Curl Simultaneously

Wouldn’t it be great if you could use php and curl to download multiple files simultaneously using built-in curl functions? You can!

11 Comments | Continue...

---

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...

---

Sending POST form data with php CURL

CURL Guide for sending POST data form request with PHP and CURL

Tagged: curl, form, htaccess, PHP, post | 17 Comments | Continue...

---

Custom PHP.ini tips and tricks

Tagged: htaccess, PHP, php.ini | 9 Comments | Continue...

---

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

1 Comment | Continue...

---

FastCGI on DreamHost

Continue...

---

Web Development Glossary

Web Development / Webmaster Glossary
A | B | C | D | E | F | G | H | I | L | M | N | O | P | R | S | T | U | V | W | X | Z | other glossaries
This glossary defines some of the common terminology related to Apache in particular, and web serving in general. More information on each concept is provided in the links.

Access Control
The restriction of access to network realms. In an Apache context usually the restriction of access to certain URLs.See: Authentication, Authorization, and Access Control

Account
The term “account” is often used synonymously with username here at DynDNS. Both terms describe the name you use to log in to our system. An account is not the same as a hostname, which may be named differently.

age
The age of a response is the time since it was sent by, or successfully validated with, the origin server.

Alias
See cname.

Algorithm
An unambiguous formula or set of rules for solving a problem in a finite number of steps. Algorithms for encryption are usually called Ciphers.
APache eXtension Tool (apxs)
A perl script that aids in compiling module sources into Dynamic Shared Objects ( dsos) and helps install them in the Apache Web server.See: Manual Page: apxs

A Record
An A Record, short for Address Record, allows a numeric ipaddress to map to a more human-readable domain. An A Record may also be referred to as a host or hostname.

Authoritative Nameserver
A nameserver which has been configured to provide answers for a specific domain, rather than simply getting and caching data about domains from other nameservers.

Authentication
The positive identification of a network entity such as a server, a client, or a user.See: Authentication, Authorization, and Access Control
Advisory Committee
An Advisory Committee is a formal advisory…

Continue...

---