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back in the good old days when you were watching Techquickie with nothing but a

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television antenna I mean not really that never happened but you know what I

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mean your TV was able to pick up a signal that just kind of emanated from a

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station somewhere that broadcasted the signal in a big kind of like bubble that

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anyone in range with a TV and bunny ears could watch but of course videos on

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YouTube and other sites don't work this way instead internet traffic actually

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has to be routed to the correct Place directly and unlike an old school TV or

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radio signal online data has to know

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where it's going so how then does it do

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this well this is where something called tcpip comes in which stands for

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transmission control protocol and Internet Protocol now you may have seen

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some vague references to tcpip in your

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network card or browser settings but what exactly is is that you can actually

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think of tcpip as a cake or a club

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sandwich since the way it works is often conceptualized in layers it's just that

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those layers are made up of computer code instead of icing or delicious

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corned beef the topmost layer is called

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the application layer which is what programs like your web browser directly

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interact with this layer has protocols like HTTP if you're visiting websites or

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SMTP if you're checking your email the next layer down is called the

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transport layer where TCP lives along with another schema called UDP which is

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a bit faster and useful for low latency applications like online games after the

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application layer gets the data from whatever program you're using it talks

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to the transport layer through something called a port now each Port can be

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assigned to a different protocol in the application layer so that TCP knows

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where the data is coming from for example most activity in your web

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browser will go through Port 80 which is what HTTP always uses once TCP gets the

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data it chops it up into small chunks called packets so that they can be

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disposed of in a nearby lake so no one will ever find no sorry what were we

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talking about uh where they can be where they can individually take the quickest

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route over the internet to get wherever it is they're going to make sure that

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the receiving computer can put the packets back together properly dental

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records are included so sorry to put it

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back together properly into driving directions a Techquickie episode or an

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advice animal meme TCP slaps a header

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onto each packet that contains instructions on what order to reassemble

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the packets into as well as error checking information so that the

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receiving computer knows whether the packets data arrived without any

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mishaps after this is done the packets are pushed onto the creatively named

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internet layer which uses the Internet Protocol or IP to attach both the origin

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and destination IP addresses so the

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packet knows where it came from and where it's going the data is then sent

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through the final Network layer that handles things like mac addressing so

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the packets go to the right physical machine as well as converting the data

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into electrical impulses that will actually pass through the ver verbial

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series of tubes and although every single packet of data has to go through

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all of these layers packet switching actually makes the internet faster than

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it would otherwise be since it allows each packet to individually avoid

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congestion and bottlenecks that would occur if all the data had to travel

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along the same route during each session tcpip also streamlines things further

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because it can deal with packets from all your computer's applications so that

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browser or game doesn't have to do that

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by itself so all this stuff going on behind the scenes means that you're

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usually not kept waiting for too long at least not anymore since tcpip didn't

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exactly save us from blocky videos back when we were all using phone modems that

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sounded like a couple of droids trying to have a conversation wouldn't that be funny like

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a sci-fi movie set 30 years from the future where instead of the droids being

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like they actually sound like modems that's what modems are doing I know

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that's what they're doing that's damn it Taran speaking of what

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modems are doing they are telling the sites that you visit where you're

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visiting them from and TunnelBear VPN

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lets you hide that data so it allows you

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to Tunnel through up to 20 different countries allowing you to browse the

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internet and use online services as though you are in a different country

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effectively making it so the websites and servic

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that you visit don't know what your destination IP was it instead gets

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replaced as soon as you turn on that tunnel bear switch with an IP somewhere

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else in the world wherever you select in fact they've got easy to ous apps for

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iOS Android PC and Mac as well as a Chrome extension and all you've got to

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do is just pick a country and hit the switch your connection will get

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encrypted and your public IP will be switched and you don't have to deal with

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any of that nonsense like configuring ports or DNS or blah blah blah blah it's

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simple enough that my mom could do it they also have a top rated privacy

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over to our link tunnel bear.com Linus speaking of teren complaining guys

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like the video if you liked it dislike it if you disliked it check out our other channels like Channel Super Fun

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over here comment with a video suggestion below and don't forget to

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subscribe and follow and all of that good stuff see you next time