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		<title>MyBroadband - Blogs - The_Librarian</title>
		<link>http://mybroadband.co.za/vb/blog.php/8757-The_Librarian</link>
		<description>Have your say about Broadband, Gaming, Hardware, Software, ADSL, HSDPA, iBurst, computing and anything else. Discuss Telkom, Vodacom, MTN, Cell C, 8ta, Neotel, MWEB, Afrihost, Web Africa and Cybersmart.</description>
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			<title>MyBroadband - Blogs - The_Librarian</title>
			<link>http://mybroadband.co.za/vb/blog.php/8757-The_Librarian</link>
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			<title>Dissecting a Quamtum 4Gb Bigfoot hard drive - pt3</title>
			<link>http://mybroadband.co.za/vb/entry.php/1765-Dissecting-a-Quamtum-4Gb-Bigfoot-hard-drive-pt3</link>
			<pubDate>Tue, 01 May 2012 15:39:05 GMT</pubDate>
			<description>The parking mechanism is a very simple, yet effective mechanism :  
 
The parking mechanism in action :  
Image: http://dl.dropbox.com/u/1188550/Bigfoot/resize/parked.jpg  
 
The heads in normal use (unparked) : 
Image: http://dl.dropbox.com/u/1188550/Bigfoot/resize/unparked.jpg  
 
The parking...</description>
			<content:encoded><![CDATA[<blockquote class="blogcontent restore">The parking mechanism is a very simple, yet effective mechanism : <br />
<br />
The parking mechanism in action : <br />
<img src="http://dl.dropbox.com/u/1188550/Bigfoot/resize/parked.jpg" border="0" alt="" /><br />
<br />
The heads in normal use (unparked) :<br />
<img src="http://dl.dropbox.com/u/1188550/Bigfoot/resize/unparked.jpg" border="0" alt="" /><br />
<br />
The parking mechanism (note the small iron piece - this will ensure that the lever stays in position) :<br />
<img src="http://dl.dropbox.com/u/1188550/Bigfoot/resize/park%20mechanism%20-%20note%20metal.jpg" border="0" alt="" /><br />
Because the metal piece is attracted to the magnet, it'll automatically close the mechanism when the hard drive spins down.<br />
<br />
Older hard drives might have more elaborate mechanisms to open and close it.<br />
<br />
On the other end this lever have some vanes, this ensures that the wind movement (caused by the spinning HDD) will keep it open.<br />
<br />
Most modern hard drives will also do on-the-fly remapping of bad blocks encountered. A map of bad blocks is stored on the controller board.<br />
<br />
If you have a HDD with a ton of bad blocks, and want to do data recovery, it usually helps to put the controller board of exactly the same make and model of HDD.<br />
<br />
But you're stuck if the platter with the tracks on which helps with voice-coil calibration/location is shot - then you cannot access your data, and will need the help of specialized data recovery specialists.</blockquote>

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			<dc:creator>The_Librarian</dc:creator>
			<guid isPermaLink="true">http://mybroadband.co.za/vb/entry.php/1765-Dissecting-a-Quamtum-4Gb-Bigfoot-hard-drive-pt3</guid>
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			<title>Dissecting a Quamtum 4Gb Bigfoot hard drive - pt2</title>
			<link>http://mybroadband.co.za/vb/entry.php/1763-Dissecting-a-Quamtum-4Gb-Bigfoot-hard-drive-pt2</link>
			<pubDate>Tue, 01 May 2012 15:35:21 GMT</pubDate>
			<description>After removing the cover, we now can see the Hard Drive in its naked glory. :o 
 
Image: http://dl.dropbox.com/u/1188550/Bigfoot/resize/virgin%20hdd%20naked.jpg  
 
Quite impressive :p 
 
All modern Hard Drives are operated via a voice coil. Older hard drives used a stepper motor. 
 
Image:...</description>
			<content:encoded><![CDATA[<blockquote class="blogcontent restore">After removing the cover, we now can see the Hard Drive in its naked glory. :o<br />
<br />
<img src="http://dl.dropbox.com/u/1188550/Bigfoot/resize/virgin%20hdd%20naked.jpg" border="0" alt="" /><br />
<br />
Quite impressive :p<br />
<br />
All modern Hard Drives are operated via a voice coil. Older hard drives used a stepper motor.<br />
<br />
<img src="http://dl.dropbox.com/u/1188550/Bigfoot/resize/voice%20coil%20layout.jpg" border="0" alt="" /><br />
<br />
Why a voice coil instead of a stepper motor?<br />
<br />
A stepper motor van move its spindle by small, fixed amounts. But, due to the tracks getting closer to each other, a stepper motor cannot move those small distances. <br />
<br />
The advantage of a stepper motor is that the controlling circuitry knew exactly where the head(s) was at any given moment. But, with a voice coil, that doesn't work as the head(s) could be anywhere. What the manufacturers did, was to &quot;format&quot; the 4th side (for a 2-platter HDD) or the 2nd side (for a single-platter HDD) with a special layout - and the voice-coil controlling mechanism can now &quot;read&quot; from that special platter, and know exactly where the head(s) might be at any given moment.<br />
<br />
Then there is another problem with stepper motors - the older variants would leave the heads on the middle of the hard drive, a prime candidate for a head crash should the HDD start up again, hence the need to &quot;park&quot; the heads before moving the computer. Newer stepper motor variants usually have enough power to move the entire head assembly to track 0 (closest to the spindle motor, or platter spindle) to &quot;park&quot; the heads. <br />
A voice coil mechanism does the same. <br />
<br />
One little problem, however. With a stepper motor, the heads cannot move when transporting the HDD. But, with a voice-coil, the heads can still move.<br />
<br />
So the manufacturers got clever, and build a little cantilevered arm into the assembly, which'll stop the heads from moving when being transported. When the hard drive spins up, the air movement will cause the parking lever to move, allowing the heads to move.</blockquote>

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			<dc:creator>The_Librarian</dc:creator>
			<guid isPermaLink="true">http://mybroadband.co.za/vb/entry.php/1763-Dissecting-a-Quamtum-4Gb-Bigfoot-hard-drive-pt2</guid>
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			<title>Dissecting a Quamtum 4Gb Bigfoot hard drive - pt1</title>
			<link>http://mybroadband.co.za/vb/entry.php/1761-Dissecting-a-Quamtum-4Gb-Bigfoot-hard-drive-pt1</link>
			<pubDate>Tue, 01 May 2012 15:34:47 GMT</pubDate>
			<description>WARNING - DO NOT OPEN ANY WORKING HARD DRIVES WITHOUT A CLEAN-ROOM ENVIRONMENT. 
 
YOU MAY DESTROY YOUR WORKING HARD DRIVE IF YOU OPEN IT WITHOUT THE PROPER EQUIPMENT IN A PROPER CLEAN-ROOM FACILITY!!! 
 
Having said that, let us proceed. 
 
During the course of my career I have opened many hard...</description>
			<content:encoded><![CDATA[<blockquote class="blogcontent restore">WARNING - DO NOT OPEN ANY WORKING HARD DRIVES WITHOUT A CLEAN-ROOM ENVIRONMENT.<br />
<br />
YOU MAY DESTROY YOUR WORKING HARD DRIVE IF YOU OPEN IT WITHOUT THE PROPER EQUIPMENT IN A PROPER CLEAN-ROOM FACILITY!!!<br />
<br />
Having said that, let us proceed.<br />
<br />
During the course of my career I have opened many hard drives, just to see what these look like, and of course!!! To get the magnets!!!<br />
<br />
Voice-coil magnets are extremely strong, and is just the thing needed to pinch somebody's earlobes, or any other delicate part of the anatomy... errrrr.... <br />
<br />
...errr... sorry, wrong channel, this is not Club BOFH.<br />
<br />
Anyway, as I was saying, voice-coil magnets are very strong, and care is needed when working with these in case some delicate *ahem* piece of your anatomy is pinched between two strong magnets. You have been warned.<br />
<br />
The Bigfoot series was very fascinating to me when they came out, since the trend was towards physically smaller hard drives, not physically larger HDD's. <br />
<br />
Anyway. It's quite an interesting HDD as it got a &quot;window&quot; at the bottom, where you can see the heads moving if you so want.<br />
<br />
To disassemble any HDD, you'll need a proper set of tools. I bought this screwdriver with an assortment of screw tips at a Chinese mall :<br />
<br />
<img src="http://dl.dropbox.com/u/1188550/Bigfoot/resize/tools.jpg" border="0" alt="" /><br />
<br />
You'll probably need a bigger Philips screwdriver, with assorted bits, in order to loosen any screws which might be quite a bit tight.<br />
<br />
Then, studying the case of the Bigfoot, we find :<br />
<br />
<img src="http://dl.dropbox.com/u/1188550/Bigfoot/resize/before%20dissection.jpg" border="0" alt="" /><br />
<br />
Black is the screws we'll need to remove (this includes the PC Board). Yellow means the sticker/warranty label is hiding a screw.<br />
<br />
Unfasten those screws, and put these in a safe place.</blockquote>

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			<dc:creator>The_Librarian</dc:creator>
			<guid isPermaLink="true">http://mybroadband.co.za/vb/entry.php/1761-Dissecting-a-Quamtum-4Gb-Bigfoot-hard-drive-pt1</guid>
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			<title>Uncapped. What to do, and what not to do.</title>
			<link>http://mybroadband.co.za/vb/entry.php/1011-Uncapped-What-to-do-and-what-not-to-do</link>
			<pubDate>Wed, 31 Mar 2010 18:29:16 GMT</pubDate>
			<description><![CDATA[The recent incident where users of Afrihost's uncapped offerings moaned about being capped, refers. 
 
First, I view the download of 1Tb of data as abuse of the system, nothing else. You can whitewash it, you can gloss it over, but a download of 1Tb is just too much, and this have a negative impact...]]></description>
			<content:encoded><![CDATA[<blockquote class="blogcontent restore">The recent incident where users of Afrihost's uncapped offerings moaned about being capped, refers.<br />
<br />
First, I view the download of 1Tb of data as abuse of the system, nothing else. You can whitewash it, you can gloss it over, but a download of 1Tb is just too much, and this have a negative impact on honest, regular users.<br />
<br />
Being a packrat gains nothing - you download files which you probably won't be using, or look at.<br />
<br />
Now...<br />
<br />
In my opinion, an uncapped account can be used in by companies and SOHO environments - where they simply cannot afford to be capped at all.  Having said that, the same companies probably can also use a second ADSL line with a normal capped account for general staff use - so if the staff does not respect company policies and download what they want, then, of course they'll be capped - but the email will not be capped.<br />
<br />
In my experience as sysadmin, I found that, in general, with fair use, a company with between 50 and 80 employees can comfortably do 60Gb's on average. Data was obtained from the ISP which shows that the lowest usage was between 50 and 60Gb's, whilst high usage was between 60 and 70Gb's.<br />
<br />
This include, but is not limited to the following :<br />
<br />
1. Emails<br />
2. Virus updates (Mcafee and Microsoft Security Essentials)<br />
3. Skype IM (and in some cases, Skype VoIP)<br />
4. PPTP VPN and OpenVPN with Remote Desktop/UltraVNC/telnet/SSH to onsite servers<br />
5. Internet Radio<br />
6. Youtube etc<br />
7. Facebook<br />
8. General Internet use<br />
<br />
Furthermore, we have another ADSL line with an capped account - and we frequently manage to hit 10Gb of use. This is for use for the financial department only - they VPN and Remote Desktop in to the mother company to do their financial statements.<br />
<br />
All in all, we can easily do up to 70 to 80Gb of data usage per month.<br />
<br />
So, I'm sitting here tonight, asking myself <b>how the dickens is anybody able to download up to 1Terabyte</b> (1000Gigabytes) of content from the Internet. Unless they were sharing their uncapped accounts with their friends and buddies, I just cannot see how that is possible.<br />
<br />
Anyway... we still have a lot to learn - and one of these is to stop being greedy after the long drought of bandwidth - and use only what you really need, and not to guzzle what you can just because you can do so.<br />
<br />
Looking forward to the next round of price decreases, speed increases and other goodies from my side.<br />
<br />
Libs.</blockquote>

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			<dc:creator>The_Librarian</dc:creator>
			<guid isPermaLink="true">http://mybroadband.co.za/vb/entry.php/1011-Uncapped-What-to-do-and-what-not-to-do</guid>
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			<title>Remakes - Part 3 - Atic Atac</title>
			<link>http://mybroadband.co.za/vb/entry.php/477-Remakes-Part-3-Atic-Atac</link>
			<pubDate>Tue, 23 Mar 2010 09:15:43 GMT</pubDate>
			<description>---Quote--- 
From Atic dark to Cellar dank, in Caverns deep and swampland rank. The garden green spawms hideous life, the outhouse treasure leads to strife Awake...awake...and find the key! For only then wilt thou be free! 
---End Quote--- 
The third remake to be covered, is Atic Atac, a nice...</description>
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				From Atic dark to Cellar dank, in Caverns deep and swampland rank. The garden green spawms hideous life, the outhouse treasure leads to strife Awake...awake...and find the key! For only then wilt thou be free!
			
		</div>
	</div>
</div>The third remake to be covered, is Atic Atac, a nice shoot-'em-up game.<br />
<br />
In Atic Atac you have to recover three pieces of a key, in order to escape the mansion. <br />
<br />
It do sound easy, but it is not. <br />
<br />
At the start of the game, you choose one of three characters, a wizard, serf or a knight. Each character has a different weapon.<br />
<br />
The remake is true to the original, but with a few extra bells and whistles, and with better graphics than its predecessor.<br />
<br />
Atic Atac can be downloaded from <a href="http://retrospec.sgn.net/game/atic" target="_blank">here</a>.<br />
<br />
Enjoy :D</blockquote>

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			<dc:creator>The_Librarian</dc:creator>
			<guid isPermaLink="true">http://mybroadband.co.za/vb/entry.php/477-Remakes-Part-3-Atic-Atac</guid>
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			<title>OS/2 Redux</title>
			<link>http://mybroadband.co.za/vb/entry.php/885-OS-2-Redux</link>
			<pubDate>Thu, 19 Nov 2009 18:11:27 GMT</pubDate>
			<description>Had a little shufty at Hobbes (http://hobbes.nmsu.edu/), the OS/2 software archive, and was surprised to see that people still develop for an supposedly dead Operating System. :) 
 
I then did a little nitpicking on virtualizers and OS/2, and discovered that OS/2 used the full instruction set of...</description>
			<content:encoded><![CDATA[<blockquote class="blogcontent restore">Had a little shufty at <a href="http://hobbes.nmsu.edu/" target="_blank">Hobbes</a>, the OS/2 software archive, and was surprised to see that people still develop for an supposedly dead Operating System. :)<br />
<br />
I then did a little nitpicking on virtualizers and OS/2, and discovered that OS/2 used the full instruction set of the Intel CPU's, which meant that it is very difficult to virtualize :D<br />
<br />
According to <a href="http://en.wikipedia.org/wiki/OS/2" target="_blank">Wikipedia</a> : <br />
<br />
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				OS/2 has historically been more difficult to run in a virtual machine than most other legacy x86 operating systems because of its extensive reliance on the full set of features of the x86 CPU.
			
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	</div>
</div>And also :<br />
<br />
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				VirtualBox from Sun Microsystems currently supports OS/2 Warp 3, 4 and 4.5 as well as eComStation as guests. Innotek (now part of Sun) also developed the “additions” code in both Virtual PC and Virtual Server which greatly improves host-guest OS interactions in OS/2. However, attempting to run OS/2 and eComStation can still be difficult, if not impossible to run, because of the strict requirements of VT-x/AMD-V hardware-enabled virtualization and only MCP2 is reported to work in a reliable manner.<br />
<br />
QEMU and Bochs also support running OS/2 as they're full x86 system emulators and not virtualization software, and thus emulates the entire x86 architecture instead of relying on the host CPU, essentially allowing OS/2 unrestricted access to Ring 2, albeit an emulated one.
			
		</div>
	</div>
</div>Interesting. So, if you're unsure whether you're running a real Intel CPU or not, just install OS/2, if it bombs out, then you'll know you're running a fake :D<br />
<br />
Quite interesting. Makes one wonder what other OS'es makes full use of the entire Intel CPU instruction set. <br />
<br />
But to do that, in today's times, would be foolish, as the OS will also need to run on AMD (and possibly, other) CPU's as well.<br />
<br />
So glad I'm not coding any kernels... :D</blockquote>

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			<dc:creator>The_Librarian</dc:creator>
			<guid isPermaLink="true">http://mybroadband.co.za/vb/entry.php/885-OS-2-Redux</guid>
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			<title>Project Gutenberg</title>
			<link>http://mybroadband.co.za/vb/entry.php/483-Project-Gutenberg</link>
			<pubDate>Mon, 13 Oct 2008 18:48:23 GMT</pubDate>
			<description><![CDATA[Project Gutenberg aims to capture all the old books and stories so that they may not be forgotten or lost. 
 
There's over 25000 free books available for download. 
 
The Beginning of Project Gutenberg : 
 
 
---Quote--- 
Project Gutenberg began in 1971 when Michael Hart was given an operator's...]]></description>
			<content:encoded><![CDATA[<blockquote class="blogcontent restore">Project Gutenberg aims to capture all the old books and stories so that they may not be forgotten or lost.<br />
<br />
There's over 25000 free books available for download.<br />
<br />
The Beginning of Project Gutenberg :<br />
<br />
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				Project Gutenberg began in 1971 when Michael Hart was given an operator's account with $100,000,000 of computer time in it by the operators of the Xerox Sigma V mainframe at the Materials Research Lab at the University of Illinois.<br />
<br />
This was totally serendipitous, as it turned out that two of a four operator crew happened to be the best friend of Michael's and the best friend of his brother. Michael just happened &quot;to be at the right place at the right time&quot; at the time there was more computer time than people knew what to do with, and those operators were encouraged to do whatever they wanted with that fortune in &quot;spare time&quot; in the hopes they would learn more for their job proficiency.<br />
<br />
At any rate, Michael decided there was nothing he could do, in the way of &quot;normal computing,&quot; that would repay the huge value of the computer time he had been given ... so he had to create $100,000,000 worth of value in some other manner. An hour and 47 minutes later, he announced that the greatest value created by computers would not be computing, but would be the storage, retrieval, and searching of what was stored in our libraries.<br />
<br />
He then proceeded to type in the &quot;Declaration of Independence&quot; and tried to send it to everyone on the networks ... which can only be described today as a not so narrow miss at creating an early version of what was later called the &quot;Internet Virus.&quot;<br />
<br />
A friendly dissuasion from this yielded the first posting of a document in electronic text, and Project Gutenberg was born as Michael stated that he had &quot;earned&quot; the $100,000,000 because a copy of the Declaration of Independence would eventually be an electronic fixture in the computer libraries of 100,000,000 of the computer users of the future. 
			
		</div>
	</div>
</div>The Philosophy of Project Gutenberg :<br />
<br />
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				The premise on which Michael Hart based Project Gutenberg was: anything that can be entered into a computer can be reproduced indefinitely ... what Michael termed &quot;Replicator Technology&quot; The concept of Replicator Technology is simple; once a book or any other item (including pictures, sounds, and even 3-D items can be stored in a computer), then any number of copies can and will be available. Everyone in the world, or even not in this world (given satellite transmission) can have a copy of a book that has been entered into a computer.<br />
<br />
This philosophical premise has created several offshoots: 1.Electronic Texts (Etexts) created by Project Gutenberg are to be made available in the simplest, easiest to use forms available.<br />
<br />
Suggestions to make them less readily available are not to be treated lightly. Therefore, Project Gutenberg Etexts are made available in what has become known as &quot;Plain Vanilla ASCII,&quot; meaning the low set of the American Standard Code for Information Interchange: ie the same kind of character you read on a normal printed page — italics, underlines, and bolds have been capitalized.<br />
<br />
The reason for this is that 99% of the hardware and software a person is likely to run into can read and search these files.<br />
<br />
Any other system of etext storage is going to fall short of an audience of 99%.<br />
<br />
This does not mean there are not other valid mean of doing the etext business ... after all, over half the computers are DOS, so one could address a wide audience by just doing DOS. Plain Vanilla ASCII, however, addresses the audience with Apples and Ataris all the way to the old homebrew Z80 computers, while an audience of Mac, UNIX and mainframers is still included.<br />
<br />
In this same vein, Project Gutenberg selects etexts targeted a bit on the &quot;bang for the buck&quot; philosophy ... we choose etexts we hope extremely large portions of the audience will want and use frequently. We are constantly asked to prepare etext from out of print editions of esoteric materials, but this does not provide for usage by the audience we have targeted, 99% of the general public.<br />
<br />
Also in the same vein, Project Gutenberg has avoided requests, demands, and pressures to create &quot;authoritative editions.&quot; We do not write for the reader who cares whether a certain phrase in Shakespeare has a &quot;:&quot; or a &quot;;&quot; between its clauses. We put our sights on a goal to release etexts that are 99.9% accurate in the eyes of the general reader. Given the preferences your proofreaders have, and the general lack of reading ability the public is currently reported to have, we probably exceed those requirements by a significant amount. However, for the person who wants an &quot;authoritative edition&quot; we will have to wait some time until this becomes more feasible. We do, however, intend to release many editions of Shakespeare and the other classics for the comparative study on a scholarly level, before the end of the year 2001, when we are scheduled to complete our 10,000 book Project Gutenberg Electronic Public Library.<br />
<br />
Project Gutenberg has been a part of celebrations of the 100th Anniversary of Public Libraries, starting in 1995. Project Gutenberg hopes to found &quot;The Public Domain Register,&quot; after the 100th Anniversary of The U.S. Copyright Register in 1997.<br />
<br />
We hope you will be part of it, too. You are all invited.<br />
<br />
Footnote:<br />
<br />
Our eventual goal is to provide Public Domain Etext editions a short time after they enter the Public Domain. Of course, the period before a copyrighted work entered the Public Domain was extended from 28 years (with a 28 year extension available) to 50 years more than the life of the author, so this put a kink, to put it mildly, into our plans. (The original copyright was for 14 years, in the U.S.) Thus, a person could originally do a reasonable prediction that anything under copyright would be in the Public Domain while it could be used, under the new law it is impossible to predict the length of a copyright, and the likelihood of a new book entering the Public Domain during the lifetime of the average reader is minimal. (Suppose you might be 25 when you read a new book and the author is 50: wait the average 25 years for the author to die (what a thought!*) Now you have to wait another 50 years to have access to that book; it doesn't matter when it was written (unless it is an old one ... before the period the law retroacted to) ... so you would have to wait (on the average) until you were 100 years old. A 25-year-old under the original law would only have to wait for 14 years ... until the age of 39. Quite a difference; between the ages of 39 and 100. Not only that, but the copyright laws would have to stay the same for all that time ... something in serious doubt, seeing how much they have changed in the recent century. 
			
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	</div>
</div>So... what are you waiting for? Point your browsers to <a href="http://www.gutenberg.org/wiki/Main_Page" target="_blank">http://www.gutenberg.org/wiki/Main_Page</a> and start reading!<br />
<br />
Classics like Robert Louis Stevenson's &quot;Treasure Island&quot; or HG Wells' &quot;The Invisible Man&quot; is available for reading both online and offline.</blockquote>

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			<dc:creator>The_Librarian</dc:creator>
			<guid isPermaLink="true">http://mybroadband.co.za/vb/entry.php/483-Project-Gutenberg</guid>
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			<title>Remakes - Part 2 - The Hobbit</title>
			<link>http://mybroadband.co.za/vb/entry.php/476-Remakes-Part-2-The-Hobbit</link>
			<pubDate>Sun, 05 Oct 2008 18:02:27 GMT</pubDate>
			<description>---Quote--- 
Some games that should not have been forgotten are lost. History becomes legend. Legend becomes myth. And for twenty-six years, this game passed out of all knowledge (well, almost). Until, when chance came, the game ensnared another remaker. 
---End Quote--- 
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				Some games that should not have been forgotten are lost. History becomes legend. Legend becomes myth. And for twenty-six years, this game passed out of all knowledge (well, almost). Until, when chance came, the game ensnared another remaker.
			
		</div>
	</div>
</div><div style="text-align: center;"><img src="http://mybroadband.co.za/photos/data/500/thehobbitbanner.png" border="0" alt="" /><br />
<br />
Welcome to JRR Tolkien's<br />
<br />
<font size="5"><span style="font-family: Impact">The Hobbit</span></font></div><br />
The game can be downloaded from <a href="http://monalisa.web44.net/" target="_blank">http://monalisa.web44.net/</a><br />
<br />
It still sport the original pictures from the game, so don't expect hi-res pictures...<br />
<br />
...yet... :p<br />
<br />
In this game you play the part of Bilbo Baggins, travel with Gandalf and Thorin to the Lonely Mountain, collect some treasure, and make it back safely.<br />
<br />
Good luck! :D</blockquote>

]]></content:encoded>
			<dc:creator>The_Librarian</dc:creator>
			<guid isPermaLink="true">http://mybroadband.co.za/vb/entry.php/476-Remakes-Part-2-The-Hobbit</guid>
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			<title>Remakes - Part 1 - Knight Lore</title>
			<link>http://mybroadband.co.za/vb/entry.php/474-Remakes-Part-1-Knight-Lore</link>
			<pubDate>Fri, 03 Oct 2008 12:12:38 GMT</pubDate>
			<description>Image: http://mybroadband.co.za/photos/data/500/knight1.gif  
 
Image: http://mybroadband.co.za/photos/data/500/knight2.gif  
 
In the days of the 48k Sinclair ZX Spectrum there was a couple of good and excellent games. I will cover a few of these games briefly, and also give links for downloads...</description>
			<content:encoded><![CDATA[<blockquote class="blogcontent restore"><div style="text-align: center;"><img src="http://mybroadband.co.za/photos/data/500/knight1.gif" border="0" alt="" /><br />
<br />
<img src="http://mybroadband.co.za/photos/data/500/knight2.gif" border="0" alt="" /></div><br />
In the days of the 48k Sinclair ZX Spectrum there was a couple of good and excellent games. I will cover a few of these games briefly, and also give links for downloads whenever possible.<br />
<br />
Most of the remakes covered is close to the original, and some have extra bells and whistles added.<br />
<br />
In Knight Lore you have to find a wizard and ask him to reverse a spell cast on you. In order to cast the spell on you, the wizard require several objects, and it is up to you to collect them all and put these into the wizard's cauldron.<br />
<br />
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					<img src="images/misc/quote_icon.png" alt="Quote" /> Originally Posted by <strong>http://www.crashonline.org.uk/12/knghtlr.htm</strong>
					
				</div>
				<div class="message">Our brave hero, Sabreman, is back again, pith helmet still firmly in place, but now roving the torturous rooms and passageways of Knight Lore castle to seek the old dying wizard, who is the only person who can free him from the deadly curse (appearing in a pith helmet all day perhaps)? The old wizard, whose name is Melkhior, is like many another game wizard — he sets traps and tests to ensure that all who reach him are worthy.<br />
<br />
Knight Lore is played over forty days and forty nights. At the base of the screen a moon and sun symbol indicate the time. By day Sabreman is himself, but at night he changes into a werewulf. In either condition he is vulnerable to sudden death. The rooms are populated with all manner of spiky death and large stone blocks. In some respects Knight Lore resembles a 3D platform game, where the trick in each room is to discover the route and the methods by which you can reach the various charms which must be collected without being impaled on a spike, crushed by a failing ball chain or zapped by a poltergeist. Sometimes the ghosties are useful in helping you to move about, but panic sets in as the days run out, for after the fortieth day, Sabreman, if he fails in his quest, will forever become a werewulf.<br />
<br />
Scoring is by time taken, percentage of quest completed and charms collected with an overall rating offered. As in Underwurlde there is no Hall of Fame, largely due to the size of the program.</div>
			
		</div>
	</div>
</div>Fortunately for those of you who will want to play this classic, a remake is out, and can be found <a href="http://www.classic-retro-games.com/KnightLore_109.html" target="_blank">here</a>.<br />
<br />
A screenshot of the remake : <br />
<div style="text-align: center;"><br />
<img src="http://mybroadband.co.za/photos/data/500/remake1.jpg" border="0" alt="" /></div></blockquote>

]]></content:encoded>
			<dc:creator>The_Librarian</dc:creator>
			<guid isPermaLink="true">http://mybroadband.co.za/vb/entry.php/474-Remakes-Part-1-Knight-Lore</guid>
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			<title>Virtual Keyboards</title>
			<link>http://mybroadband.co.za/vb/entry.php/308-Virtual-Keyboards</link>
			<pubDate>Wed, 25 Jun 2008 10:30:37 GMT</pubDate>
			<description>Recently we received a small touchscreen with which to test our software with. So I was tasked with finding a virtual keyboard to allow the users to log on. And it must be free for use. 
 
A quick Google produced this website : 
...</description>
			<content:encoded><![CDATA[<blockquote class="blogcontent restore">Recently we received a small touchscreen with which to test our software with. So I was tasked with finding a virtual keyboard to allow the users to log on. And it must be free for use.<br />
<br />
A quick Google produced this website :<br />
<br />
<a href="http://www.freedownloadmanager.org/downloads/Click-N-Type_41112_p/free.htm" target="_blank">http://www.freedownloadmanager.org/d...112_p/free.htm</a><br />
<br />
In order to produce customized keyboards, such as the one shown below, you'll have to download an extra application via <a href="http://www.polital.com/cntd/" target="_blank">http://www.polital.com/cntd/</a><br />
<br />
<img src="http://mybroadband.co.za/photos/data/500/virtualkb.png" border="0" alt="" /><br />
<br />
The installation and setup is fairly straightforward, there are no funny issues, and the designer is very easy to use.<br />
<br />
You can create any type and size of virtual keyboards you'll need.<br />
<br />
Hope this helps people who needs virtual keyboard applications.</blockquote>

]]></content:encoded>
			<dc:creator>The_Librarian</dc:creator>
			<guid isPermaLink="true">http://mybroadband.co.za/vb/entry.php/308-Virtual-Keyboards</guid>
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			<title><![CDATA[Wife's Nursery School]]></title>
			<link>http://mybroadband.co.za/vb/entry.php/146-Wife-s-Nursery-School</link>
			<pubDate>Tue, 08 Jan 2008 11:01:03 GMT</pubDate>
			<description><![CDATA[I have decided to post up some pictures for the people who might be curious to see what we've up to. 
 
First up - a view of the jungle gym house from the left. 
 
http://mybroadband.co.za/photos/showphoto.php?photo=2075 
 
Same house, from the right. 
...]]></description>
			<content:encoded><![CDATA[<blockquote class="blogcontent restore">I have decided to post up some pictures for the people who might be curious to see what we've up to.<br />
<br />
First up - a view of the jungle gym house from the left.<br />
<br />
<a href="http://mybroadband.co.za/photos/showphoto.php?photo=2075" target="_blank">http://mybroadband.co.za/photos/show...php?photo=2075</a><br />
<br />
Same house, from the right.<br />
<br />
<a href="http://mybroadband.co.za/photos/showphoto.php?photo=2076" target="_blank">http://mybroadband.co.za/photos/show...php?photo=2076</a><br />
<br />
This was built by ourselves. We got a few friends over to help with the roof, but apart from that it was an DIY job which took a long time.<br />
<br />
Onto the walls.<br />
<br />
The first wall, as you enter the property, is this :<br />
<br />
<a href="http://mybroadband.co.za/photos/showphoto.php?photo=2074" target="_blank">http://mybroadband.co.za/photos/show...php?photo=2074</a><br />
<br />
Unfortunately the tazzmanian devil is a bit obscured by the tree, but here's tazz in all its glory :D<br />
<br />
<a href="http://mybroadband.co.za/photos/showphoto.php?photo=2078&amp;size=big" target="_blank">http://mybroadband.co.za/photos/show...=2078&amp;size=big</a><br />
<br />
On the other side of the house is the Dalmatians - two of which are obscured by a tree :<br />
<br />
<a href="http://mybroadband.co.za/photos/showphoto.php?photo=2072&amp;size=big" target="_blank">http://mybroadband.co.za/photos/show...=2072&amp;size=big</a><br />
<br />
Here are the two pictures :<br />
<br />
<a href="http://mybroadband.co.za/photos/showphoto.php?photo=2071&amp;size=big" target="_blank">http://mybroadband.co.za/photos/show...=2071&amp;size=big</a><br />
<br />
and<br />
<br />
<a href="http://mybroadband.co.za/photos/showphoto.php?photo=2070&amp;size=big" target="_blank">http://mybroadband.co.za/photos/show...=2070&amp;size=big</a><br />
<br />
Then, we also have Pooh Bear and friends up. Eeyore's hiding behind the tree.<br />
<br />
<a href="http://mybroadband.co.za/photos/showphoto.php?photo=2077&amp;size=big" target="_blank">http://mybroadband.co.za/photos/show...=2077&amp;size=big</a><br />
<br />
Eeyore.<br />
<br />
<a href="http://mybroadband.co.za/photos/showphoto.php?photo=2073&amp;size=big" target="_blank">http://mybroadband.co.za/photos/show...=2073&amp;size=big</a><br />
<br />
There still is a lot of work which need to be done. The paving around the house have been filled up with riversand, and we still have to do the sand pit for the kiddies.<br />
<br />
The garage is on the process of being converted to a classroom - we need to put in new wall plugs, lights, ceiling board and two windows (one for the classroom and the other for the toilet. Also we need to tile the whole area, and put in two toilets and a wash basin. At the moment there's no good pictures available (all are blurred quite a bit) and in the one the Ook's showing off his beer belly. :eek: :p :D<br />
<br />
We have two metal jungle gyms which I'm sanding off and preparing for a new paintjob. The rains are making things a bit difficult tho.<br />
<br />
As soon as new pictures become available, they will be posted as well.</blockquote>

]]></content:encoded>
			<dc:creator>The_Librarian</dc:creator>
			<guid isPermaLink="true">http://mybroadband.co.za/vb/entry.php/146-Wife-s-Nursery-School</guid>
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			<title>Archive (Zip) Programs</title>
			<link>http://mybroadband.co.za/vb/entry.php/80-Archive-(Zip)-Programs</link>
			<pubDate>Tue, 16 Oct 2007 19:44:40 GMT</pubDate>
			<description><![CDATA[You've probably heard of WinRAR and WinZip. 
 
Or you're using a cracked version of WinRAR/WinZip on your PC. 
 
Or you're tired of the integrated Zipped files function in WindowsXP, and want something more powerful, but are unsure of what to get. 
 
Then ZipGenius...]]></description>
			<content:encoded><![CDATA[<blockquote class="blogcontent restore">You've probably heard of WinRAR and WinZip.<br />
<br />
Or you're using a cracked version of WinRAR/WinZip on your PC.<br />
<br />
Or you're tired of the integrated Zipped files function in WindowsXP, and want something more powerful, but are unsure of what to get.<br />
<br />
Then <a href="http://www.zipgenius.it/eng/index.php" target="_blank">ZipGenius</a> will fit your pocket.<br />
<br />
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					<img src="images/misc/quote_icon.png" alt="Quote" /> Originally Posted by <strong>ZipGenius website</strong>
					
				</div>
				<div class="message">ZipGenius is a free software that can compress files in several compressed archive formats, designed to run under any version of Windows®. It is absolutely free, it doesn’t show advertising messages while running, it doesn’t collect user’s personal data and it doesn’t require any registration in order to use all its features.<br />
<br />
Minimum requirements:<br />
<br />
    * CPU: Intel Pentium 233 MMX / AMD K5<br />
    * RAM: 16 MB<br />
    * 16 MB of free space on hard disk<br />
    * Windows 95<br />
<br />
ZipGenius can be installed in:<br />
<br />
    * Windows 95 OSR-2 + Internet Explorer 4.x<br />
    * Windows 98/98SE<br />
    * Windows ME<br />
    * Windows NT4 SP6 + Internet Explorer 4.x<br />
    * Windows 2000<br />
    * Windows XP<br />
    * Windows Server 2003<br />
    * Windows Longhorn / Vista - 32bit<br />
<br />
ZipGenius can create and handle several archive formats, including ZIP, RAR, CAB, ACE, 7-zip, ARC, SQX; also, it can read and decompress CD/DVD images in ISO9660 format (.ISO, .NRG, .CMI).</div>
			
		</div>
	</div>
</div>It is a freeware compression/decompression suite, and is easy to work with.<br />
<br />
ZipGenius can be downloaded <a href="http://www.zipgenius.it/eng/?page_id=12" target="_blank">here</a>.<br />
<br />
It can also work with any antivirus scanner to prevent the escape of nasties from a zip file. Simply go to Tools, Options, Safety, Antivirus and enter your antivirus programs' details there. <a href="http://www.zipgenius.it/eng/?page_id=25" target="_blank">This</a> page will show you how and what to use.<br />
<br />
One great feature of ZipGenius is that it allows you to scan from your camera/scanner directly to a zip file.<br />
<br />
One more reason to stop pirating programs. :)</blockquote>

]]></content:encoded>
			<dc:creator>The_Librarian</dc:creator>
			<guid isPermaLink="true">http://mybroadband.co.za/vb/entry.php/80-Archive-(Zip)-Programs</guid>
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			<title>Antivirus Programs</title>
			<link>http://mybroadband.co.za/vb/entry.php/79-Antivirus-Programs</link>
			<pubDate>Tue, 16 Oct 2007 19:27:27 GMT</pubDate>
			<description><![CDATA[Face it - you do need an antivirus program to protect your system, and to stop spam and trojans from chewing up your bandwidth. 
 
There is a good selection of free antivirus software available. Which means you don't have to be a pirate to enjoy protection against viruses. 
 
*AVG Free* 
 
First up...]]></description>
			<content:encoded><![CDATA[<blockquote class="blogcontent restore">Face it - you do need an antivirus program to protect your system, and to stop spam and trojans from chewing up your bandwidth.<br />
<br />
There is a good selection of free antivirus software available. Which means you don't have to be a pirate to enjoy protection against viruses.<br />
<br />
<div style="text-align: center;"><font size="3"><b>AVG Free</b></font></div><br />
First up is AVG Free, which can be downloaded <a href="http://free.grisoft.com/doc/downloads-products/us/frt/0?prd=aff" target="_blank">here</a>.<br />
<br />
Email scanning with AVG Free is also possible, and it offers real-time on-demand scanning in the background.<br />
<br />
Unfortunately, you are limited in your customization choices for AVG Free. You can set the update time, the scan time, and a proxy server for updates, but that is all. Recommended for users who doesn't want to, or have the time to, fiddle around with settings and such nonsense.<br />
<br />
<div style="text-align: center;"><font size="3"><b>ClamWin</b></font></div><br />
Second, which is just as good, is ClamWin, which is based on ClamAV, ClamWin can be downloaded <a href="http://here" target="_blank">here</a>, whilst ClamAV can be downloaded <a href="http://www.clamwin.com/" target="_blank">here</a>. ClamAV is the Linux version of the package.<br />
<br />
It offers scanning of emails in Outlook, and will remove any infected attachments automatically.<br />
<br />
An excellent choice for the home user who only do Web browsing and lots of emails, and no file downloads.<br />
<br />
ClamWin does not offer on-access real-time scanning, but this does not mean that it's useless. Rather, it can be used on email and FTP servers where frequent scanning is not needed, it can scan incoming emails, and can scan the files in the FTP repository on a regular basis, and notify you of any viruses (if present).<br />
<br />
A few screenshots of ClamWin is <a href="http://www.clamwin.com/content/view/23/55/" target="_blank">here</a>.<br />
<br />
In a tight pinch, it is possible to install ClamWin on an USB or removable drive for you to scan an infected PC - this will allow you to keep it updated, and at the same time, prevent infection of the memory stick if it's write-locked. Instructions to do so is <a href="http://www.clamwin.com/content/view/118/89/" target="_blank">here</a>.<br />
<br />
ClamWin can also use WinZip to scan inside zip archives, instructions to do so is <a href="http://www.clamwin.com/content/view/117/89/" target="_blank">here</a>.<br />
<br />
So, there really is no excuse to pirate any antivirus program just because you can't afford it.</blockquote>

]]></content:encoded>
			<dc:creator>The_Librarian</dc:creator>
			<guid isPermaLink="true">http://mybroadband.co.za/vb/entry.php/79-Antivirus-Programs</guid>
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			<title>Fighting Spam - Part 1</title>
			<link>http://mybroadband.co.za/vb/entry.php/73-Fighting-Spam-Part-1</link>
			<pubDate>Fri, 12 Oct 2007 13:39:14 GMT</pubDate>
			<description><![CDATA[*Fighting Spam* 
 
There are several methods used to combat spam. 
 
In this blog I will deal with using Spamhaus (http://www.spamhaus.org)'s SBL, XBL and PBL lists. 
 
*SBL - Sources Blocked List* - this is useful for blocking verified spam sources and operations (including spammers, spam gangs...]]></description>
			<content:encoded><![CDATA[<blockquote class="blogcontent restore"><b>Fighting Spam</b><br />
<br />
There are several methods used to combat spam.<br />
<br />
In this blog I will deal with using <a href="http://www.spamhaus.org" target="_blank">Spamhaus</a>'s SBL, XBL and PBL lists.<br />
<br />
<b>SBL - Sources Blocked List</b> - this is useful for blocking verified spam sources and operations (including spammers, spam gangs and spam support services)<br />
<br />
<b>XBL - eXploits Blocked List</b> - this is useful for blocking illegal 3rd party exploits, including open proxies (HTTP, socks, AnalogX, wingate, etc), worms/viruses with built-in spam engines, and other types of trojan-horse exploits.<br />
<br />
<b>PBL - Policy Blocked List</b> - this is a list of end-user IP address ranges which should not be delivering unauthenticated SMTP email to any Internet mail server except those provided for specifically by an ISP for that customer's use.<br />
<br />
In Exchange 2003, go to System Manager - Global Settings - Message Delivery. <br />
<br />
Open the Properties page for Message Delivery.<br />
<br />
Click on the Connection Filtering tab.<br />
<br />
Click on &quot;Add&quot;<br />
<br />
In the &quot;Display Name&quot; field, add the description of the filter.<br />
<br />
In the DNS Suffix of Provider, add one of the following :<br />
<br />
pbl.spamhaus.org<br />
<br />
<b>OR</b> <br />
<br />
sbl.spamhaus.org<br />
<br />
<b>OR</b><br />
<br />
xbl.spamhaus.org<br />
<br />
<br />
<b>OR</b> you can use sbl-xbl.spamhaus.org for a combined SBL-XBL listing.<br />
<br />
<b>OR</b> you can use zen.spamhaus.org for an all-in-one combination to block all three in one go.<br />
<br />
You cannot use, for example xbl.spamhaus.org and zen.spamhaus.org at the same time.<br />
<br />
Apply the changes.<br />
<br />
If you use a different email server, peruse its FAQ or manual to see how to incorporate the Spamhaus lists into your mailserver the correct way.<br />
<br />
Now you'll need to test your setup, to verify that it's working.<br />
<br />
Head over to the <a href="http://www.crynwr.com/spam/" target="_blank">Crynwr</a> page and read the information there.<br />
<br />
Then, send a small email to the following :<br />
<br />
<a href="mailto:nelson-sbl-test@crynwr.com">nelson-sbl-test@crynwr.com</a> to test your SBL<br />
<a href="mailto:nelson-pbl-test@crynwr.com">nelson-pbl-test@crynwr.com</a> to test your PBL<br />
<a href="mailto:nelson-xbl-test@crynwr.com">nelson-xbl-test@crynwr.com</a> to test your XBL<br />
<br />
If you installed the list correctly, you will see a message like the following :<br />
<br />
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					<img src="images/misc/quote_icon.png" alt="Quote" /> Originally Posted by <strong>Crynwr mail bot</strong>
					
				</div>
				<div class="message">Testing your XBL block.  See <a href="http://www.crynwr.com/spam/" target="_blank">http://www.crynwr.com/spam/</a> for more info.<br />
Please note that this test will not tell you if your server is open for relaying.  Instead, it tests to see if your server blocks email from IP addresses listed in various blocking lists; in this case, the XBL list.<br />
<br />
Here's how the conversation looked from xbl.crynwr.com.<br />
Note that some sites don't apply the XBL block to postmaster, so I use your envelope sender as the To: address.<br />
<br />
I connected to xxx.xx.xxx.xx and here's the conversation I had:<br />
<br />
220 mailserver.somecompany.co.za Micro$oft ESMTP MAIL Service, Version: 6.0.3790.0 ready at  Fri, 12 Oct 2007 15:08:22 +0200 helo xbl.crynwr.com 250 mailserver.somecompany.co.za Hello [zzz.zzz.zzz.zzz] mail from:&lt;&gt; 250 2.1.0 &lt;&gt;....Sender OK rcpt to:&lt;grumpy.bofh@somecompany.co.za&gt;<br />
550 5.7.1 zzz.zzz.zzz.zzz has been blocked by Spamhaus SBL-XBL list Terminating conversation</div>
			
		</div>
	</div>
</div>This should minimize incoming spam.<br />
<br />
<b>Note</b>: It is suggested that the PBL be used as least as possible as the table of IP addresses is not up to date, and will cause unneccessary grief with small businesses hosting their own email server.</blockquote>

]]></content:encoded>
			<dc:creator>The_Librarian</dc:creator>
			<guid isPermaLink="true">http://mybroadband.co.za/vb/entry.php/73-Fighting-Spam-Part-1</guid>
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			<title>The Spam Blog</title>
			<link>http://mybroadband.co.za/vb/entry.php/72-The-Spam-Blog</link>
			<pubDate>Fri, 12 Oct 2007 11:12:10 GMT</pubDate>
			<description>*Spam*. 
 
*What is spam?* 
 
According to Monty Python (http://en.wikipedia.org/wiki/Spam_%28Monty_Python%29). :D 
 
According to Wikipedia (http://www.wikipedia.org), spam (http://en.wikipedia.org/wiki/Spam_%28electronic%29) is : 
 
 
---Quote---</description>
			<content:encoded><![CDATA[<blockquote class="blogcontent restore"><b>Spam</b>.<br />
<br />
<b>What is spam?</b><br />
<br />
According to <a href="http://en.wikipedia.org/wiki/Spam_%28Monty_Python%29" target="_blank">Monty Python</a>. :D<br />
<br />
According to <a href="http://www.wikipedia.org" target="_blank">Wikipedia</a>, <a href="http://en.wikipedia.org/wiki/Spam_%28electronic%29" target="_blank">spam</a> is :<br />
<br />
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				Spamming is the abuse of electronic messaging systems to indiscriminately send unsolicited bulk messages. While the most widely recognized form of spam is e-mail spam, the term is applied to similar abuses in other media: instant messaging spam, Usenet newsgroup spam, Web search engine spam, spam in blogs, wiki spam, mobile phone messaging spam, internet forum spam and junk fax transmissions.
			
		</div>
	</div>
</div>According to <a href="http://Spamhaus" target="_blank">Spamhaus</a>, spam is :<br />
<br />
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				The word &quot;Spam&quot; as applied to Email means Unsolicited Bulk Email (&quot;UBE&quot;).<br />
<br />
Unsolicited means that the Recipient has not granted verifiable permission for the message to be sent. Bulk means that the message is sent as part of a larger collection of messages, all having substantively identical content.<br />
	<br />
<br />
A message is Spam only if it is both Unsolicited and Bulk.<br />
- 		Unsolicited Email is normal email<br />
(examples: first contact enquiries, job enquiries, sales enquiries)<br />
<br />
- 		Bulk Email is normal email<br />
(examples: subscriber newsletters, customer communications, discussion lists)
			
		</div>
	</div>
</div>It is a problem, for both system administrators and users alike.<br />
<br />
Consider the following scenario (taken from Spamhaus):<br />
<br />
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				If you agree to accept spam as an advertising medium, then you also agree that every business in the world can send spam to you. As you have no way to limit who can send you spam, you are therefore agreeing to receive bulk email advertisements from a potential 200,000,000 businesses worldwide. Assuming each only sends you one spam per month you would receive 6,600,000 spams per day, meaning 4,500 spams per minute, or 150 spams per second, into your email mailbox. And many businesses would like to send more than one message per month, possibly more than one per day! So how do you solve this problem?
			
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</div>This will have the potential of interfering with the following :<br />
<br />
1. Your ADSL/Diginet line. <br />
<br />
As the spam mails are coming in, there won't be enough bandwidth for other applications (such as Web browsing, downloading, or other forms of communication). Your cap will also be used up whether you want it or not, should you have a 1Gb cap.<br />
<br />
2. Your email server.<br />
<br />
Simply put, this means that spam filtering techniques will be utilizing more CPU as they will be busy with processing the spam that's coming in. Also, because a favourite trick of spammers is to put in a lot of nonsense simply to obfuscate and clog up <a href="http://www.paulgraham.com/spam.html" target="_blank">statistical spam filtering</a>, so-called <a href="http://en.wikipedia.org/wiki/Bayesian_poisoning" target="_blank">Bayesian poisoning</a>. This will mean more rules to process, which takes away more CPU cycles from other applications, thus slowing the email server down.<br />
<br />
3. Your system/email administrator.<br />
<br />
Spare a thought for the poor chappie watching his hard drive fill up with junk messages, statistical spam filter rules and the such. This means he will be constantly busy trying to figure out ways and means of reducing the deluge of spam. Also, in a corporate environment, your sysadmin usually have to clean and, if needed, reinstall your PC should a virus or trojan infects it.<br />
<br />
4. You, the end-user.<br />
<br />
You, the end-user ultimately have to decide which email is spam and which is not, in the end. This take up a lot of your time, which could be better spend doing your work, surf the Internet or relax with your family. Also, because some emails might contain viruses or trojans, you will (if you use your personal PC) have to send it in for repairs or cleaning if such a virus or trojan infects your PC, which costs money, or you'll have to deal with it yourself (which wastes your time at the end of the day).<br />
<br />
So, spam is a problem.<br />
<br />
After all, you'll get irritated with emails extolling the virtues of Megadik, day after day.<br />
<br />
<b>Combating spam</b>.<br />
<br />
There are several ways of combating spam.<br />
<br />
1. At the user level, most modern email readers have a built-in filtering tool to remove some spam.<br />
<br />
2. On the email server level, the following can be used with great success :<br />
<br />
a) <a href="http://www.greylisting.org/" target="_blank">Greylisting</a> and <a href="http://en.wikipedia.org/wiki/Blacklist#Computing" target="_blank">Blacklisting</a><br />
<br />
b) Statistical spam filtering<br />
<br />
c) Harassing Spambots<br />
<br />
<br />
<b>Greylisting</b><br />
<br />
Any standard email server will resend its email should there be no reply from the recipient's email server.<br />
<br />
What a graylist filter does is, it will reject the first email, but will not send a reply back to the originating server. After a timeout (depending on the sysadmin's mood and other factors :D) the originating email server will resend the original email again. <br />
<br />
When it arrives on the recipient's email server, the two emails will be compared, and if they match, will be allowed to pass through.<br />
<br />
Since most spammers operate botnets or zombies which doesn't adhere to the SMTP protocol, this will stop most spam dead.<br />
<br />
Note I said most - if a spammer find and exploit an <a href="http://en.wikipedia.org/wiki/Open_mail_relay" target="_blank">open relay</a> graylisting won't work. However, there's other methods to combat this kind of exploit.<br />
<br />
<b>Blacklisting</b><br />
<br />
<b>NOTE</b> : There are other antispam companies out there, for the sake of simplicity I will deal only with <a href="http://www.spamhaus.org" target="_blank">Spamhaus</a>.<br />
<br />
Spamhaus have three types of lists.<br />
<br />
The SBL (Spam Block List) which lists all IP's associated with spam,<br />
<br />
the XBL (eXploits block list) which blocks all IP's associated with exploits hidden in emails, and<br />
<br />
The PBL (Policy Block List). <br />
<br />
Spamhaus describes the PBL as :<br />
<br />
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				The Spamhaus PBL is a DNSBL database of end-user IP address ranges which should not be delivering unauthenticated SMTP email to any Internet mail server except those provided for specifically by an ISP for that customer's use. The PBL helps networks enforce their Acceptable Use Policy for dynamic and non-MTA customer IP ranges.
			
		</div>
	</div>
</div><b>Statistical spam filtering</b><br />
<br />
There exists various implementations of statistical spam filters out there for use on various email servers.<br />
<br />
<a href="http://en.wikipedia.org/wiki/Bayesian_spam_filtering" target="_blank">Wikipedia on statistical spam filtering</a> :<br />
<br />
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				Bayesian filtering was proposed by Sahami et al. (1998)[1] and gained attention in 2002 when it was described in a paper by Paul Graham.[2] Since then it has become a popular mechanism to distinguish illegitimate spam email from legitimate email (sometimes called ham). Many modern mail programs implement Bayesian spam filtering. Users can also install separate email filtering programs. Server-side email filters, such as SpamAssassin, SpamBayes, Bogofilter and ASSP, make use of Bayesian spam filtering techniques, and the functionality is sometimes embedded within mail server software itself.
			
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	</div>
</div>However, it also have its Achilles heel :<br />
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				Bayesian poisoning is a technique used by spammers in an attempt to degrade the effectiveness of spam filters that rely on Bayesian filtering. A spammer practicing Bayesian poisoning will send out emails with large amounts of legitimate text (gathered from legitimate news or literary sources).
			
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	</div>
</div>This explains the block of gobbledygook which is inserted in some spam mails.<br />
<br />
<b>Harassing Spambots</b><br />
<br />
Those with uncapped ADSL accounts, or unlimited accounts might want to strike back at the spammers where it hurts most - their spambots.<br />
<br />
This <a href="http://www.turnstep.com/Spambot/" target="_blank">site</a> contains information on what a spambot is, a few ideas and practical suggestions on how to feed spambots false email addresses.<br />
<br />
Of course, everything is not static, but will continue to evolve, with the spammers finding new ways and means of delivering their spam, and the others finding new ways of stopping the spam.<br />
<br />
<a href="http://en.wikipedia.org/wiki/Can_Spam_Act_of_2003" target="_blank">Laws</a> can be passed prohibiting spammers from sending their spam, but it won't scare them off that easily.<br />
<br />
<br />
<br />
<b>Resources</b> :<br />
<br />
1. <a href="http://www.wikipedia.org" target="_blank">Wikipedia</a><br />
2. <a href="http://www.spamhaus.org" target="_blank">Spamhaus</a><br />
3. <a href="http://www.turnstep.com/Spambot/" target="_blank">Spambot beware</a></blockquote>

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			<dc:creator>The_Librarian</dc:creator>
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