How internet Works? - Amazing Animation

How internet Works? - Amazing Animation:

May peace and blessings of the Almighty be upon you....

This video you are about to witness gives a basic level information about "How Internet Works?" You are introduced to several networking concepts and it is always a pleasure to have this vid in the blog.

Whats more??....This vid runs for just 12 mins (and few seconds more) and provides you a excellent viewing experience.

My sincere thanks to makers of the video (Gunilla Elam, Tomas Stephanson, Niklas Hanberger) and the engineering community is always thankful to them.

The entire commentary of the video was given below. This vid used here for educational purpose and does not contain any commercial motives.

Let's start and have fun...

==========

Manuscript - Tomas Stephanson, Monte Reid

For the first time in history people and machinery are working together, realizing a dream. A uniting force that knows no geographical boundaries. Without regard to race, creed or color. A new era where communication truly brings people together.

This is the Dawn of The Net.

Want to know how it works? Click here to begin your journey into the Net.

Now exactly what happened when you clicked on that link? You started a flow of information. This information travels down to your own personal mail-room where Mr. IP packages it, labels it and sends it on its way. Each packet is limited in its size. The mail-room must decide how to divide the information and how to package it.

The IP packet now needs a label, containing important information such as senders address, receivers address and the type of packet it is. Because this particular packet is going out onto the Internet, it also gets an address for the Proxy Server which has a special function as we'll see later.

The packet is now launched onto your Local Area Network or LAN. This network is used to connect all the local computers, routers, printers etc. for information exchange within the physical walls of the building. The LAN is a pretty uncontrolled place and unfortunately accidents can happen.

The highway of the LAN is packed with all types of information. There are IP packets, Novell packets, Apple Talk packets - Uh, they're going against traffic as usual. The local router reads the address and if necessary lifts the packet onto another network.

Ah the router. A symbol of control in a seemingly disorganized world. There he is..systematic, uncaring, methodical, conservative and sometimes not quite up to speed. But he is exact... for the most part.

As the packets leave the router, they make their way into the corporate intranet and head for the router switch. A bit more efficient than the router, the router switch plays fast and loose with IP packets deftly routing them along their way. A digital pin-ball wizard if you will.

< As packets arrive at their destination they are picked up by the network interface, ready to be sent to the next level. In this case, the proxy. The proxy is used by many companies as a sort of "middleman" in order to lessen the load on their Internet connection. And for security reasons as well. We can see that the packet are all of various sizes, depending on their content.

The proxy opens the packet and looks for the WEB address or URL. Depending upon whether the address is acceptable…the packet is sent on to the Internet. There are, however, some addresses which do not meet with the approval of the proxy (that is to say corporate or management guidelines). These are summarily dealt with. We'll have none of that. For those who make it, it's on the road again.

Next up - the Fire Wall. The corporate Fire Wall serves two purposes. It prevents some rather nasty things from the Internet from coming into the intranet. And it also can prevent sensitive corporate information from being sent out to the Internet.

Once through the fire wall, a router picks up the packet and places it on to a much narrower road or band-width, as we say. Obviously, the road is not broad enough to take them all.

Now you might wonder what happens to all those packets which don't make it along the way. Well, when Mr. IP doesn't receive an acknowledgment that a packet has been received in due time, he simply sends a replacement packet.

We are now ready to enter the world of the Internet. A spider web of inter-connected networks which spans our entire globe. Here, routers and switches establish links between networks.

Now, the Net is an entirely different environment than you'll find within the protected walls of your LAN. Out here, it's the Wild West. Plenty of space, plenty of opportunities, plenty of things to explore and places to go. Thanks to very little control and regulation new ideas find fertile soil to push the envelope of their possibilities. But because of this freedom, certain dangers also lurk. You'll never know when you'll meet the dreaded Ping Of Death. A special version of a normal request Ping which some idiot thought up to mess up unsuspecting hosts.

The paths our packets take maybe via satellite, telephone lines, wireless or even trans-oceanic cable. They don't always take the fastest or shortest routes possible, but they probably will get there - eventually. Maybe that's why it's sometimes known as the World Wide Wait. But when everything is working smoothly, you can circumvent the globe 5 times over, at the drop of a hat - literally. And all for the cost of a local call or less.

Near the end of our destination, we'll find another Fire Wall. Depending upon your perspective as a data packet, the fire wall can be a bastion of security or a dreaded adversary. It all depends on which side your on and what your intentions are.

The Fire Wall is designed to let in only those packets that meet its criteria. This wall is operating on ports 80 and 25. All attempts to enter through other ports are closed for business.

Port 25 is used for mail packets, while port 80 is the entrance for packets from the Internet to the Web server.

Inside the fire wall, packets are screened more thoroughly, some packets make easily through "customs" while others look just a bit dubious. The Fire Wall officer is not easily fooled, such as when this ping of death packet tried to disguise itself as a "normal" ping packet.

For those packets lucky enough to make this far, the journey is almost over. It's just to line up on the interface to be taken up into the web server.

Nowadays, a web server can run on many things. From a mainframe, to a web-cam to the computer on your desk. Or why not your refrigerator? With the proper set-up, you can find out if you the makings for Chicken Catchitory or if you have to go shopping. Remember this is the Dawn of the Net - almost anything's possible.

One by one, the packets are received, opened and unpacked. The information they contained, that is your request for information is sent onto the Web server application. The packet itself is recycled. Ready to be used again. And filled with your requested information. Addressed and sent out on its way back to you.

Back past the fire walls, routers, and on through the Internet. Back through your corporate fire wall and onto your interface.

< Ready to supply your web browser with the information you requested.

That is - this film.

Pleased with their efforts and trusting in a better world, our trusty data packets ride off blissfully into the sunset of another day, knowing fully they have served their masters well.

Now isn't that a happy ending?

==========

Allah Knows best.

My sincere thanks to:

1. Warriors of the net website. link

Your brother,

Aashiq Ahamed A

Source : http://info-vlsi.blogspot.com/

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Dangers of the Internet in the Home

أعوذ بالله من الشيطان الرجيم
بسم الله الرحمن الرحيم

The purpose of this article is to make us aware of the dangers that lurk behind the use of the Internet [especially for children] in the home. As opposed to sticking our heads in the ground like ostriches, it is time we had an honest assessment of the facts and figures associated with the use of the Internet and it being a tool for Shaytan.

DANGERS OF THE INTERNET; EASY OF ACCESS TO PORNOGRAPHY
With the help of a few clicks, pornographic content spreads rampantly across the Internet, carried over an innumerable number of web sites, through explicit images in spam, and through advertisements on search engines. Various statistics show children increasingly being exposed to pornographic content. The content can involve despicable and disgusting acts, sometimes even involving children. The annual revenue of the worldwide pornographic industry is over £60 billion – that’s more than even Hollywood. According to a study by the London School of Economics, 6 out of every 10 children in the UK [1] were regularly being exposed to pornography – that is the majority of children.
MAJORITY OF CHILDREN
Approximately 90 percent of children aged 8 to 16 have seen pornography on the Internet. There are many ways in which children are being exposed to this evil material. Anybody with an email account would know that they are constantly bombarded by emails explicitly advertising pornography or indirectly [by showing one thing and upon clicking re-directing to an explicit site].
There are many game sites on the internet which allow harmless games to be played but advertise sexually explicit websites. According to the TopTenReviews report, at least 26 names of cartoon characters were linked to porn sites, thus exposing children to adult content on the Web.
UNCOMFORTABLE STATISTICS [2]
[1] – 89 percent of youth in chat rooms receive sexual solicitations.
[2] – 73 percent of those exposures happened while searching or surfing the Internet and 27 percent while opening e-mail or clicking on links in e-mails or instant messages.
[3] – 67 percent happened while using the Internet at home; 15 percent at school; 3 percent in libraries; and the rest at other homes, such as friends’, and elsewhere.
[4] – most of the images were of nudity, 32 percent showed a sexual act,
[5] – web searches and search engines were the most common route to exposures (47 percent).
[6] – in 26 percent of the surfing incidents, the children surveyed were “mousetrapped” into another dirty site while trying to get out of the one they were in.
INTERNET – TOOL OF THE SHAYTAN
The Shaytan, who is our open and clear enemy, is using the Internet to corrupt the Believers and their children’s morals, Imaan [faith] and dignity. Allah [swt] says in the Qur’an,
‘Satan threatens you with poverty and orders you to commit Fahishah’
al-Baqarah 2:268
WHAT DOES ‘FAHISHAH’ MEAN?
Linguistically ‘Fahishah’ means, ‘an excess or enormity, a thing excessively and enormously foul, evil, immoral, lewd, obscene, a sin or a crime which is excessively foul; adultery or fornication.’
One finds that the Internet is the marketplace for people indulging in ‘Fahishah’ and all the steps that lead to it – accumulating major sins in the sight of their Creator, Allah [swt]. The Shaytan has openly declared war on the children of Adam [due to his jealousy] and his primary aim is to drag as many of them as possible to the Hell-Fire with him – May Allah [swt] protect us and our children [ameen]
PSYCHOLOGICAL EFFECTS
Repeated and long-term exposure of pornographic material is severely traumatic and damaging to children’s Imaan [faith] and leads to all sorts of psychological and behavioural problems. One must realise that you cannot delete from the memories of children what they have seen of these images or videos. These ‘evil seeds’ are planted into the hearts of the innocent resulting in producing adults who are sexually perverted, promiscuous, immoral, psychologically inept and corrupt Muslims who continue to battle with their sins.
OUR RECOMMENDATIONS
Parents must take active responsibility to ensure that their homes are safe from the influence of Fahishah – especially from the Internet. We recommend the following:
[1] – Do not have access to the internet anywhere in the house except in the main living/dining room with the computer monitor facing outwards – i.e., towards the rest of the room
[2] – Children do not need to have email addresses or accounts on Facebook, Twitter, MSN, Yahoo etc. Supervise access to YouTube.
[3] – do not allow them to use chatrooms
[4] – Only allow access to the internet while they are being supervised [or in groups of responsible children]
[5] – Setup bookmarks for your children and only allow them to visit these ‘approved’ sites – do not give them the opportunity to type in the address box
[6] – Putting a physical block on adult sites – this can be done by adjusting the settings in your internet explorer
[7] – Install internet protection software for children – available free online
[8] – Ensure that the history of the pages visited cannot be deleted.
WARNING
Please do not turn a blind eye to dangers that the Internet poses to our future – our children. Doing so would be tantamount to incompetence and irresponsibility on the part of the Parents. Is it logical that we would ever hand our children a 500 page encyclopaedia, that has 50 pages of explicit material and then expect our children never to stumble upon them? The astute parent would remove the 50 pages and then hand the book over or sit by their side and make sure nothing other than beneficial information is looked at.
We ask Allah [swt], the Lord of the Worlds, to protect us and our children from the fahishah [immorality] and fitnah [turmoil] that surrounds us and protects us all from the traps of the Shaytan [ameen]
———
[1] – http://news.bbc.co.uk/1/hi/magazine/6336509.stm
[2] – Mainly taken from the key findings of U.S. Study “The Exposure of Youth to Unwanted Sexual Material on the Internet”
Submitted by a Muslim
 http://theheartopener.wordpress.com

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The use of the Internet to propagate Islam - I

In the beginning of the year 1969 CE, in the state of California, people were able to transfer data between two personal computers which were few metres apart via a telephone line, and this was the first such connection to be established anywhere.

Before this incident, such a link was only a concept which was to be implemented in the computer laboratories of the United States Department of Defence as part of their Star Wars program. The aim was to have a network fit for military use.

The number of people who connected to this initial network increased rapidly and developed at a very rapid rate, such that the number has reached more than billion people today, who are connected through millions of personal computers globally, and this, in the opinion of many, was the most important invention of the twentieth century. Allaah Says (what means): “[Allaah] Taught man that which he knew not.” [Quran 68: 5]

Allaah has made mankind a successive authority upon the earth, wherein man lives and worships Allaah; He has granted man great ability of mind and has created for him upon the earth things which he can invest in and utilize in the obedience of Allaah; so glad tidings for the one who utilizes the earth's resources in the obedience of Allaah and woe to those who utilize them in His disobedience.

One cannot help but be surprised when he witnesses the development of the Internet in light of the Hadeeth of the Prophet which was narrated by Abu Hurayrah in the book of Imaam Ahmad and others ; he said: “The Hour will not come until trials appear in large numbers, lying becomes widespread, markets converge and time shortens.” In another narration, he said: “Until time shortens and Harj increases.” So a companion of his asked: “What is Harj?” and he replied: “Countless killing.”

In the past, the scholars such as Ibn Al-Khattaab, Al-Khattaabi, Ath-Thawri & Ibn Hajar have interpreted the shortness of time to mean that time will lose its value and people will feel that there is not enough of it to do anything. Contemporary scholars like Shaykh ibn Baaz said commenting on the book Fath Al-Baari of Imaam ibn Hajar : “This can be interpreted to be the contraction of distance and the time required to travel it due to aircraft and cars, as well as the closeness that people feel regarding events due to radio (which broadcasts these events).”

However, if we take a look at the invention of the Internet, we will see that it best fits as an interpretation for this narration, because the Internet has made everything seem closer and turned the entire world into a global village. As for the closeness of markets, Shaykh Mas’ood Ad-Dakheeli said: “It seems that this is referring to how the distance between places has shortened during our time due to the various means of transportation via air and land, and due to the electronic devices, like radios and televisions, which transmit sound and images and have made the markets in different parts of earth seem near to each other, so that traders know about any changes in price anywhere in the world, and consequently raise their prices in their own locations accordingly, or decrease them if they drop elsewhere.”

Therefore, the closeness of markets is in three ways: firstly, the speed of transfer of market data, secondly, the physical proximity due to modern transportation methods, and thirdly, the similarity in prices between markets.

Anyone who is well acquainted with the Internet will realise just how closely it fits the abovementioned prophetic narration.

There is one website, for example, that has three million items and runs an international auction on a number of these items. One can buy anything via such websites, and there are very many of these on the internet. Also, one can also display on such websites what items he himself has to sell, and this is an indication that we are living at the end of time, close to the Hour, as in the aforementioned narration, and that the minor preconditions of the Hour are taking place and that there are about three of them still left to occur. After these, the ten major preconditions will start occurring. It is worth mentioning that there is nothing to prevent a major sign from occurring concurrently with some of the minor signs of the Hour, as some of the scholars noted.

The point here is the closeness of markets and the shortness of time, which is fulfilled by the Internet, and is another proof of the prophethood of the Prophet who informed us fourteen hundred years ago about things that are taking place during our time.

Other narrations related to the preconditions of the Hour include the saying of the Prophet : “Before the Hour, dealing in trade will become widespread.” Electronic trade has overwhelmed the markets and is in the billions of dollars. He also informed us that of these signs will be: “…the spread of adultery and fornication” as in the narration in the book of Imaam Bukhaari . In the narration of Imaam Al-Haakim he said: “Immorality will spread…” - In excess of four hundred thousand pornographic websites are present on the Internet which spread immorality worldwide.

Another relationship between the Internet and the preconditions of the Hour is highlighted in the narration in the book of Imaam At-Tabaraani where the Prophet said: “Before the Hour, dealing in Ribaa (i.e., interest and usury) will become widespread.” It is well known that on the Internet, dealing in Ribaa is widespread and many banks have established websites and set the cost of a customer transaction via the Internet as only ten cents, whereas the cost of a live transaction inside a bank building costs one dollar and seven cents; this is an indication that as time passes, dealings inside bank buildings will become obsolete and all banking transactions will be done via the Internet by people who are at home or in their offices. These banks are institutions that have been established on Ribaa and their proliferation on the Internet has become evident. Additionally, the use of credit cards on the Internet is also widespread. The prohibited use of cards like Visa, MasterCard and American Express, all of which entail dealing in Ribaa, causes the wrath of Allaah to befall the one using them.

The use of the Internet to propagate Islam -II
The use of the Internet to propagate Islam -III

Source : http://www.islamweb.net/

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How internet Works? - Amazing Animation

May peace and blessings of the Almighty be upon you....

This video you are about to witness gives a basic level information about "How Internet Works?" You are introduced to several networking concepts and it is always a pleasure to have this vid in the blog. 

Whats more??....This vid runs for just 12 mins (and few seconds more) and provides you a excellent viewing experience.  

My sincere thanks to makers of the video (Gunilla Elam, Tomas Stephanson, Niklas Hanberger) and the engineering community is always thankful to them.  

The entire commentary of the video was given below. This vid used here for educational purpose and does not contain any commercial motives.


Let's start and have fun...

 
Please click to read more http://info-vlsi.blogspot.com/

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The Internet Yesterday & Today [infographic]

Think about what the Internet looked like 5 years ago. 10 years ago.
It's ridiculous to think about how far we've come along, not only with the speed, but how the design of pages look, how the Internet has economically helped us survive.

This infographic illustrates just that; Yesterday's struggle and today's advancements.

Created by: Online University
by mail from Tony S.

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The State of The Internet..

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Interaction between Men and Women on the Internet – Some Guidelines

There are many interactive forums on the Internet, including chat sites and online communities. We need to address the critical question of how Muslim men and women should conduct themselves when they come into contact with one another while participating in these forums.

The following guidelines should be observed by Muslim men and women when interacting with one another on the Internet: 

1. Never display photographs under any circumstances. 

To start with, photographs are simply not necessary. The written word is more than sufficient. We must also appreciate how photographs can become a great opportunity for Satan to tempt people and make their foul deeds seem fair to them.

Some people might consider such caution misplaced. However, those who understand how people are seduced and tempted and who have experience in dealing with these problems, know that nothing is far-fetched. Moreover, some people who have a sickness in their hearts manage to deceive themselves and others that something which is completely wrong is instead something that is good and that is motivated by the sincerest and noblest intentions.

2. Use typing and avoid audible means of communication.

If, for some reason, using audible media becomes necessary, then we must adhere to Allah's command: “Be not too complaisant of speech, lest one in whose heart is a disease should be moved with desire; but speak a speech that is just.” [ Sûrah al-Ahzâb : 32]

This verse was revealed concerning the wives of the Prophet (peace be upon him). If this was the case for them, we can appreciate how much more it must apply to us. Moreover, that was during the time of the Prophet (peace be upon him) while we are living in the age of permissiveness and promiscuity.

3. Maintain a serious tone and focus in conversation.

We must not get involved in talking at length about things that are unnecessary and unjustified. In truth, many people get a thrill out of merely speaking with the opposite sex, regardless of what the subject might be. Some men just like to hear a pretty voice. Likewise, since women are indeed the full sisters of men, they also find pleasure in speaking with men.

Our tone should be serious. We should avoid all that is superfluous and frivolous.

4. Remain vigilant at all times. 

Those who we meet on the Internet are, for the most part, apparitions. Men come online posturing as women and women often misrepresent themselves as men. Then, there are so many things we do not know about the other person. What is his ideology? What is his background? What country is he from? What is his line of work? What are his real intentions? All of these things are unknown.

I wish to call the attention of our honored sisters to the dangers that experience has shown us to be ever present in these situations. Many young women are quick to believe what others tell them and are very susceptible to sweet words. Such people are easy victims for the predator who lays out his trap. One moment, he is a sincere advisor, another the victim crying out for someone to save him, then he is the lonely man looking for someone with whom to share the rest of his life, the next moment he is the sick man looking for a cure…

5. Muslim women who work with the Internet should keep in close contact with one another. 

They need to develop strong channels of communication so they can lend a degree of support to each other in this important and possibly dangerous field of endeavor. They need to cooperate closely and share their experiences and expertise. A person standing alone is weak, but standing with others she is strong.

Allah says: “By time! Surely the human being is at loss. Except for those who have faith and do righteous deeds and exhort one another to truth and exhort one another to patience.” [ Sûrah al-`Asr ]

Abû Mulaykah al-Dârimî narrates: “It was the practice among the Prophet's Companions, that if two of them met, they would not depart from one another without one of them reading Sûrah al-`Asr to the other. Then one of them would greet the other with peace.” [ al-Mu`jam al-Awsat (5120) and Shu`ab al-خm ân (9057)]

I also advise our Muslim sisters to focus most of their attention and their efforts on calling other women to Islam and enjoining them to righteousness. They should use this valuable medium to assist and serve their sisters and to reform them. This should be done indirectly, subtly, and with wisdom. Too direct an approach, when giving advice, often causes the other party to become angry, confrontational, and obstinate. This is because the person giving advice comes off as seeming high-handed and arrogant, while the one being advised feels shamed and belittled. Therefore, be gentle in your choice of words, good-natured, attentive, and forbearing. This makes the receiving party more conductive to receiving your advice and less likely to spurn it

Source: Slaves of Allah


Xenia's Note: Alhamdulillah.The Internet is a powerful tool that if it is used correctly, much good can come out of it. But we must follow the above guidelines for our own good and that of our families. If you have children is very important to have the computer in a family room with the screen facing outwards so you can keep an eye on what the little ones are doing. I use the Internet a lot trying to find interesting posts, and of course trying to spread the beautiful message of Islam. But I keep myself remote and very distant from sites like f/b. In f/b all the Islamic pages are trying very hard to give knowledge and dawah. But I do know the limits of interaction. So, my dear sisters, please be alert. There are many wolves with sheep's clothing.  

Source : http://reflections4muslimahs.blogspot.com/

 

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