Internet is a global system of interconnected computer networks.

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253
votes
4answers
22k views

Who provides the Internet service to Internet Service Providers (ISPs)?

I've been wondering recently about how the infrastructure of the Internet really works. I know that I have an Internet Service Provider (ISP) that supplies my connection to the Internet. But what ...
167
votes
24answers
8k views

What are some options for transfering large files without using the Internet? [closed]

My employer's Internet connection is extremely slow. It's a $6,000 a month, 9 Mb, bonded T1, shared by over 150 users. It's not untypical to see regular file transfer speeds of 20-100 KBps. And ...
131
votes
7answers
8k views

Why did dialup modems make noise?

I know that the signal was just tone pulses but why was it when (back in the 90s) when you first connected to the internet you heard a bunch of funny noises. After that if you were to use the ...
101
votes
5answers
11k views

How should I choose my DNS?

When I have to choose my DNS I think that I should consider: Speed Reliability Privacy Control (reports and stats) The main options that come to my mind, and how I weigh them according to the ...
88
votes
3answers
7k views

Why are websites suddenly asking me about cookies?

I have for a long time known that websites give me cookies so that small pieces of information can be remembered about my habits, passwords etc. I accept this, but all of a sudden they are asking for ...
68
votes
9answers
10k views

Can you grab any IP address on the Internet?

On a personal network (LAN) one can simply grab an IP address. If you choose the same IP address as an existing client, you get problems. There are companies like IANA and ICANN that are in charge of ...
55
votes
4answers
32k views

What does wwws mean?

I've seen a couple of sites that use wwws in their domain, for example: wwws.mint.com and wwws.whitehouse.gov. I'm sure it has something to do with an extra layer of security. What does it mean and ...
43
votes
9answers
12k views

What exactly happens when you browse a website in your browser?

What happens behind the scenes when we type www.cnn.com in a browser and how does information gets displayed on the screen? A technical explanation would be highly appreciated.
39
votes
2answers
5k views

How do I diagnose not being able to reach a specific website as an end user?

If I can generally reach web pages on the Internet but can't reach a specific one, how do I troubleshoot what the cause is as an end user? This question was a Super User Question of the Week. ...
30
votes
9answers
4k views

Why is the Internet said to be an untrusted network?

From Wikipedia In computer security, a DMZ (sometimes referred to as a perimeter networking) is a physical or logical subnetwork that contains and exposes an organization's external services ...
25
votes
8answers
19k views

Can my ISP monitor me?

I'm an atheist visiting a islamic republic where the punishmnent for apostacy may be high. Is it possible for an ISP to see the websites I might browse or what kind of blasphemous conversations I ...
22
votes
10answers
8k views

Application for monitoring all applications that are using the internet in Mac OS X

Can anyone introduce me a Mac OS X application that monitors all network activity such as what applications are now connected to the internet and how much bandwidth they use (I mean show bandwidth ...
22
votes
2answers
697 views

Computer and Internet use on a boat?

Let's assume that I seriously would like to be able to use my computer as easily and as carefreely while on a boat as I do while at home. In short, if I were on a boat for extended periods, such as ...
21
votes
12answers
83k views

Windows 7 intermittently drops wired Internet/LAN connection

In a nutshell, my Windows 7 Ultimate PC intermittently drops its Internet connection. Why? Background: My PC is wired to my ADSL modem/router which is directly connected to the phone line. I also ...
20
votes
4answers
23k views

How does a hacker in a public WIFI actually view your computer?

I've read that they can see what sites your viewing or even access your computer if you're connected on the same WIFI connection but how exactly?
20
votes
8answers
18k views

How can I get my public IP address from the command line, if I am behind a router?

Is there a way for me to get my public (WAN) IP address on the command line? I am behind a router (LAN network), with a dynamic IP address assigned by my ISP. I have seen solutions using an external ...
18
votes
15answers
2k views

Surfing the web anonymously

What is the best, fastest, safest way to surf the web anonymously, and how much anonymity can you really achieve?
18
votes
3answers
9k views

How do CDN (Content Distribution Networks) work?

Taking Akamai as CDN. From what I understand, when a client requests a page, the request goes to Akamai central server, which then depending on the location of client, picks up an Akamai edge server ...
18
votes
2answers
872 views

How does http://to./ work?

So I noticed this on Jeff's twitter. They don't have a tld, it seems? How've they done this? Magic, bribery, or did a no-tld tld open up recently?
17
votes
21answers
30k views

How can I send super large files directly to another computer in the Internet for free?

I regulary need to transfer very large files (30 GB) to my friend - financial statistics. I don't have any problem with bandwidth: it is very broad here. I did some research in the area, so: 1. I ...
17
votes
7answers
5k views

Is it possible for a router to “go bad” with time?

I've been having problems with my internet connection over the past weeks (intermittent disconnections, slow transfers, etc), and my provider keeps telling me that the problem is not on their end. I ...
17
votes
13answers
2k views

Help me get past China's Great Firewall and reach blocked sites [closed]

I wonder if there are any other users who are annoyed like me by the Great Firewall set by the Chinese Government. If so would you please present me an effective way to get on YouTube? Since it's ...
17
votes
2answers
3k views

How to obtain a OpenId Identifier from Google

I'm trying to create an account at commandlinefu using OpenId. It's asking for an "OpenId Identifier". I read this article, but it doesn't really show how to actually get the identifier. I looked ...
16
votes
6answers
1k views

Will the ethernet pull bandwidth if unplugged?

I'm fairly certain that this isn't a problem, but like a phone charger it will still pull electricity even though you aren't charging anything if you leave it plugged into the wall. Though minimal it ...
16
votes
9answers
661 views

What is cloud computing?

I hear about "cloud computing" all the time, but don't know what it is. What is it's purpose? Why do I need it? What problems does it solve? What problems does it create?
16
votes
1answer
252 views

Getting internet to a protest

I'm not sure if this is the right place to ask this question, but it's been in the back of my head for a while. I am in Turkey, where there are thousands of protestors gathering in the street against ...
15
votes
5answers
4k views

Are Domain Name Server and Name Server the same thing?

I am slightly confused between DNS and Name server. Are they the same thing or is there a difference between two?
15
votes
9answers
51k views

Generating usage logs that prove my Internet connection is flaky

I need a way to generate reports or logs that prove that my Internet connection is flaky. My Comcast connection is very flaky but if I ask their support to send someone over it will probably work fine ...
14
votes
7answers
9k views

What interesting uses for IPv6 are out there? [closed]

IPv6 is reasonably easy to setup these days via 6to4 tunneling, but once done, what does one do with it? What interesting services are out there already using IPv6 or providing exclusive features over ...
14
votes
3answers
28k views

What's www8 or www6 mean?

I see some site urls such as www8.example.com or www6.example.com .. but i didn't know what www8 or www6 mean .. Can any know what's this mean and is it differ from www only ?
14
votes
2answers
71k views

How do I measure how much bandwidth Internet Radio hogs?

I was thinking about logging into Pandora at work like I do at home, but I'm concerned about sucking up all of the available bandwidth on the network with something that's not strictly work-related. I ...
13
votes
6answers
3k views

Can I make a video not downloadable? [closed]

I'm a user who has Internet Download Manager and I haven't met any video content that couldn't be downloaded by IDM. Now I would place some videos on my website and make them not downloadable, or at ...
13
votes
8answers
47k views

What's the difference between intranet, extranet and internet?

What's the difference between intranet, extranet and internet?
13
votes
5answers
14k views

How to disable internet access at night on the router?

I have an internet connection that I'd like to be enabled only during the day. With multiple household internet devices, this would need to be something disabled at the level of the router. I don't ...
13
votes
17answers
621 views

How can I make it as difficult as possible to connect to the Internet from my “work computer”?

I can't work. I need to work. But I'm here and on dozens of other sites. I read Paul Graham's essay about "Disconnecting Distractions" and this is actually something I tried before - using my other ...
13
votes
13answers
1k views

How to analyze a link to figure out the actual link

Sometimes when downloading something, I find the links are not the direct ones to the files. For example, this is a link to download a PDF file: ...
13
votes
3answers
3k views

How to know if your computer is hit by a dnschanger virus?

The Federal Bureau of Investigation (FBI) is on the final stage of its Operation Ghost Click, which strikes against the menace of the DNSChanger virus and trojan. Infected PCs running the ...
13
votes
6answers
1k views

Software to report internet traffic for home user [closed]

I need a freeware to monitor my internet activity, especially upload and download amounts over time. For instance, I like to see a graph or table that shows the downloaded and uploaded amounts per ...
13
votes
6answers
18k views

Why is my DSL connection so slow, when my neighbor's is much faster?

I've just moved into a new house (new for me; the house was built in 2006). I've purchased DSL service through AT&T, paying for speeds "up to" 768 Kbps downstream / 384 Kbps upstream. My issue ...
13
votes
1answer
499 views

How come sites like Google/Facebook/etc. don't get DDOS'd even though they receive so many requests?

Something I don't understand: (Tens/hundreds of?) thousands of people simultaneously try to connect to a site like facebook.com or google.com. From what I understand, they must all necessarily ...
12
votes
7answers
5k views

Is it possible for many domain names to share one IP address?

Is it possible for many domain names to share one IP address? For example, www.xjtl.com, www.fmie.com, sdmfl.com, etc. Hundreds of domain names share just one IP – when you do a DNS query for each of ...
11
votes
9answers
5k views

If the only browser in Windows is dead, how to connect to the Internet?

Lets say you are running Windows and there is only one browser installed. What if one day this browser dies, would it be still possible to connect to the Internet somehow (to search for the solution ...
11
votes
4answers
13k views

On Mac OS X how can I monitor what is using my internet connection?

I've got a relatively limited broadband connection (I live miles from the nearest exchange) and from time to time net access (but nothing else) slows to a near crawl. I know from a bit of monitoring ...
11
votes
6answers
3k views

Why upload rates are lower than download rates in normal internet connections?

I have used dial-up and/or broadband services from many service providers (in India) and one thing I noted is that the upload bandwidth is lower than the download bandwidth. Is there any reason for ...
11
votes
2answers
12k views

How to Tell if Internet Connection is being Throttled by Provider?

I am trying to figure out how to scientifically check and prove if my connection is being throttled by my Internet provider. Last time I asked them about this issue, they denied throttling and blamed ...
10
votes
18answers
7k views

Can the Internet work without DNS?

If we have an IP-based system of identifying nodes on the Internet why is there a need for DNS?
10
votes
6answers
2k views

Why do I have to wait before download? [closed]

Why is there a dialog "Your download will start in 5 seconds" on many sites? And they even always provide direct link. Why not just point browser directly to file (which always works perfectly for ...
10
votes
7answers
276 views

How to browse safely?

Just curious. What are the best practices and tools you use for safe Internet browsing? How to stay away from spywares, adwares etc? Update: For my work, I use Internet Explorer on Windows and ...
10
votes
4answers
2k views

What is the name of this cable that goes into a modem?

I have bought cable internet from teksavvy and the modem arrived however the cable that comes out of the wall and goes into the modem where it's labelled "Cable", is very short. What's the name of ...
10
votes
4answers
127k views

How can I block a program from accessing the Internet? [duplicate]

I really want to know how can I prevent a program to connect to Internet with Windows 7 firewall? I have smart security nod32 business edition installed on my computer. should i do this job with ...