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Networks and the Internet
Transcript of Networks and the Internet
Leading Learning in ICT Lecture 6
5 November 2012 A little history Protocols IP
DNS A few windows commands
tracert http://internet-map.net http://tools.ietf.org/html/rfc1149 Hardware Issues Hi folks
EE 4G rolled out to Edinburgh and 16 other cities last week. I won't even bet on lasting until Christmas before we have 4G devices in school.
It's fantastic of course, but wherefore the school policy on web filtering? Any blocks we put in place to protect our network or deliver on duty of care will be bypassed every time. The pupils will always go for the easiest and cheapest route out - first up will be the school network, if that fails they'll use their own connection.
I suspect duty of care will always demand that we have a filtered connection in place, but the issue has now firmly moved beyond the reach of technical solutions.
Anybody else have thoughts on whether the numbers up for web filtering in school?
James. Net neutrality
John Naughton, 2010
To appreciate the issue, we need to remember that the internet was designed to perform a single task – it takes in data packets at one end and does its best to deliver them to their destinations. Net neutrality means that the network should be agnostic about the content of the packets. It shouldn't care whether they contain fragments of emails, web pages, instant messages, music tracks, porn videos – whatever. As far as the network is concerned, they're just data packets and should receive equal treatment. According to this doctrine, any departure from this digital egalitarianism should be regarded with great suspicion. So, for example, if your ISP gave preferential treatment to data packets from the BBC iPlayer as against those from 4oD, it would be violating the doctrine, as it would if it took payments from Microsoft to prioritise Bing search results over those from Google. Digital Economy Act (2010)
The Digital Economy Act is a law passed in 2010 that is designed to tackle copyright infringement. It proposes to do this through letters and sanctions against alleged individual infringers and the blocking of access to websites. But it is so badly conceived that it threatens to lead to people who are innocent being accused of infringement, could lead to their internet account being disconnected, and could undermine the availability of public WiFi...
A significant technical difficulty is that the identification of internet users is shaky: rightsholders rely on the numbered identifier known as an "IP address" (for Internet Protocol) that is assigned to each device that accesses the internet. Often that device is a computer, but in many cases the device is a router behind which dozens of machines may operate. Any network can be broken into, and open wireless networks can be used by anyone. In either case, a network owner can be wrongly made liable. The classroom Pupils should be taught to...
Describe computer networks including the Internet and be aware that networks can provide multiple services, such as access to the Web.
(KS2 in initial draft PoS BCS/RAEng 2012) http://www.ictvideohelp.co.uk/internet/internetpackages/internetpackages.html