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Crystal Reports for Microsoft RMS – overview for developer/report designer
Microsoft Retail Management System (MS RMS), former QuickSell 2000 is very popular retail system, which is capable to automate the whole spectrum of retail businesses - from single store with inventory count needs up to the chain of...
How To Avoid Getting Hooked By Pfishing
"Pfishing", sometimes spelled "Phishing", is a word that's used to describe a method of identity theft where con men use fake e-mail that looks like it comes from legitimate sources. This e-mail is designed to hoodwink you into giving out...
Nucleus Kernel for FAT Data recovery software
Nucleus Kernel for FAT recovers data from deleted, formatted, damaged, or corrupted partitions where FAT based operating systems, such as Windows 95, Windows 98, Windows ME, Windows 2000, Windows XP, and Windows 2003 are installed on the hard disk...
Script Kiddies II - An advice to parents
After the feedback on the previous article, I thought that it would be beneficial to write another, exploring the Script Kiddie problem in a bit more depth. If you haven't already read the previous item "Script Kiddies - Vermin of the Internet", it...
Theme Pages. How to Use Them. More Traffic / More sales
Theme Sites - A Fun Way to Make Extra Revenue Remember: Mothers Day and Fathers Day are coming up. Prepare for them. Create a sense of excitement around your site. Make some extra cash. When you do what we're going to talk about today, first...
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Redirect Worms Away
My site is hosted on an Apache web server. Why is that? Because, in my
humble opinion, Microsoft's IIS web server is in no way qualified to service
internet web sites (it is excellent as an intranet and applications server,
however). Another reason is the vast number of security issues that seem to
pop up day after day.
In point of fact, the Gartner Group has recommended "that businesses hit by
both Code Red and Nimda immediately investigate alternatives to IIS,
including moving Web applications to Web server software from other vendors
such as iPlanet and Apache".
http://www4.gartner.com/DisplayDocument?doc_cd=101034
But what about those of us who are already hosting their sites on Apache
servers? I've seen lots of articles about how to protect, detect, cleanse
and prevent the worms from attacking IIS servers. While the worms do not
penetrate Apache security, they do cause damage.
Some of the damage includes:Server logs get filled with junk - The Nimda
worm alone created over 20,000 entries in a 2 day period in my log files.
The server is made very busy - This is especially true if you've got a
custom 404 error page, as I do. This means that every time the worm attempts
a penetration, then entire 404 page is returned (in my case, that's about
40k). That adds up to a lot of wasted bandwidth.
I thought about this issue for a while after examining my logs and seeing
thousands of 404 errors from attempted worm penetrations. Surely there was a
way to at least reduce the impact of these things? As I saw the 404 error
count increase, I realized that a significant portion of the bandwidth that
I was paying for was being thrown away.
An examination of the log files produced several thousand attempts at each
of the following URLs. Obviously each of these is the address of a possible
weakness in an IIS server.
/_mem_bin/..%5c../..%5c../..%5c../winnt/system32/cmd.exe
/c/winnt/system32/cmd.exe
/d/winnt/system32/cmd.exe
/scripts/..%2f../winnt/system32/cmd.exe
/scripts/..%c1%9c../winnt/system32/cmd.exe
/scripts/..%%35%63../winnt/system32/cmd.exe
/scripts/ .%%35c../winnt/system32/cmd.exe
/scripts/..%c0%2f../winnt/system32/cmd.exe
/scripts/..%c0%af../winnt/system32/cmd.exe
/MSADC/root.exe
The Apache web server provides a feature called .htaccess, which provides
commands to control a web site. This file is very obscure and extremely
useful when used properly. You have to be careful when editing .htaccess
files, as a small mistake can make your web site stop working. What I like
to do is immediately test the site to be sure it works.
Be sure not to make the mistake that I made once - I browsed to my site, saw
that the home page came up, and went to work. Later, I found it was not
working but appeared to work because the home page was stored in my browser
cache. Thus I learned a simple lesson the hard way: always hit the refresh
key of the browser when testing .htaccess changes.
I did a little research and testing, and added the following lines to my
.htaccess file.
redirect /scripts http://www.stoptheviruscold.invalid
redirect /MSADC http://www.stoptheviruscold.invalid
redirect /c http://www.stoptheviruscold.invalid
redirect /d http://www.stoptheviruscold.invalid
redirect /_mem_bin http://stoptheviruscold.invalid
redirect /msadc http://stoptheviruscold.invalid
RedirectMatch (.*)cmd.exe$ http://stoptheviruscold.invalid$1
These lines did exactly what I wanted them to do - they stopped the virus
from creating 404 errors in my log file, and they prevented my 404 error
page from being triggered, thus creating lots of useless bandwidth
utilization. There is still some bandwidth used, obviously, but it is far
less than it would have been. The load on the server is also considerably
reduced, which should make my web hosting company happy.
Note that log file entries are still made by the various worms as they
attempt to penetrate the server. These entries do now show as errors, which
makes it easier to pick out real errors from the logs.
About the Author
Richard Lowe Jr. is the webmaster of Internet Tips And Secrets at
http://www.internet-tips.net - Visit our website any time to read
over 1,000 complete FREE articles about how to improve your
internet profits, enjoyment and knowledge.
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| Tucows Downloads - Download Freeware and Shareware Software |
| Download freeware, shareware, and demos. Maintains over 45000 software titles that are tested, rated, reviewed and ready to download. |
| www.tucows.com |
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| Free Software Downloads and Software Reviews - Download.com |
| Download shareware, freeware and Demo software for PC, Mac, Linux, and Handhelds categorized into categories, plus software reviews. |
| www.download.com |
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| Computer software - Wikipedia, the free encyclopedia |
| This includes application software such as a word processor, which enables a ... Application software is often purchased separately from computer hardware. ... |
| en.wikipedia.org |
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| Shareware.com - Search for shareware programs and free software ... |
| Search for shareware programs from more than a dozen downloadable software directories. |
| www.shareware.com |
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| Jumbo: Free & Shareware MP3 files, Games, Screen Savers & Computer ... |
| Source of free and shareware computer programs and utilities for PC and Mac. Evaluate software and read product reviews. Download games and screen savers. |
| www.jumbo.com |
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| Computer Software in the Yahoo! Directory |
| Browse categories featuring sites devoted to computer software, including shareware and freeware download sites, operating systems, desktop customization, ... |
| dir.yahoo.com |
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| IEEE Software |
| IEEE Computer Society's magazine covering all aspects of software, including software engineering. |
| www.computer.org |
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| Free Downloads on ZDNet | Shareware, Trialware, Evaluation Software |
| ZDNet's Software Directory is the Web's largest library of software downloads. Covering software for Windows, Mac, and Mobile systems, ZDNet's Software ... |
| downloads.zdnet.com |
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| FSF - The Free Software Foundation |
| Free software is a matter of liberty not price. Think of "free" as in "free speech". |
| www.fsf.org |
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| Apple - Software |
| Software products for your digital life. ... The perfect addition for professional review. QuickTime Broadcaster. Encoding software for live events. ... |
| www.apple.com |
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| Open Directory - Computers: Software |
| In Partnership with AOL Search. about dmoz | report abuse/spam | help. the entire directory, only in Computers/Software. Top: Computers: Software (38471) ... |
| dmoz.org |
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| freshmeat.net: Welcome to freshmeat.net |
| About: The Web browser is probably the most frequently used software today, ... Web professionals can use the software for functional testing and regression ... |
| freshmeat.net |
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| Software - GNU Project - Free Software Foundation (FSF) |
| Listing of the GNU software packages. |
| www.gnu.org |
|
| Sun Software |
| Get enterprise-class software--Solaris 10 OS, the Java Enterprise System, ... Sun Java StorageTek Software reduces cost and complexity with a single, ... |
| www.sun.com |
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| Internet Real Estate.com -- owns and operates a portfolio of the ... |
| SOFTWARE.COM · SWEEPSTAKES.COM · PHONE.COM PODCAST.COM ... Software.com | Sweepstakes.com | Phone.com | Podcast.com | Shop.com | Safety.com ... |
| www.internetrealestate.com |
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| Joel on Software |
| A weblog by Joel Spolsky, a programmer working in New York City, about software and software companies. |
| www.joelonsoftware.com |
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| Amazon.com Software: Computer & video games, business, accounting ... |
| Online shopping for computer & video games, business & office productivity software, software from Microsoft, Apple, Adobe & more; accounting, antivirus, ... |
| www.amazon.com |
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| IBM Software - Home Page |
| IBM home page for all of its software products, including Lotus and Tivoli, with keyword search, category browse and AZ product names. |
| www.ibm.com |
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| Opera web browser: Homepage |
| Copyright © 2006 Opera Software ASA. All rights reserved. Skip navigation. Opera Software ... Copyright Opera Software ASA . All rights reserved. ... |
| www.opera.com |
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| Google Directory - Computers > Software |
| Search only in Software Search the Web ... Software Categorized by Letter: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ... |
| www.google.com |
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