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Showing posts with label Internet. Show all posts
Showing posts with label Internet. Show all posts

Thursday, April 28, 2011

A Free Internet, If We Can Keep It


“We stand for a single internet where all of humanity has equal access to knowledge and ideas. And we recognize that the world’s information infrastructure will become what we and others make of it. "
These two sentences, from Secretary of State Clinton's groundbreaking speech on Internet freedom, sum up beautifully the challenge facing our Internet policy. An open Internet can advance our values and support our interests; but we will only get there if we make some difficult choices now.
One of these choices relates to anonymity. Will it be easy to speak anonymously on the Internet, or not? This was the subject of the first question in the post-speech Q&A:
QUESTION: You talked about anonymity on line and how we have to prevent that. But you also talk about censorship by governments. And I’m struck by – having a veil of anonymity in certain situations is actually quite beneficial. So are you looking to strike a balance between that and this emphasis on censorship?
SECRETARY CLINTON: Absolutely. I mean, this is one of the challenges we face. On the one hand, anonymity protects the exploitation of children. And on the other hand, anonymity protects the free expression of opposition to repressive governments. Anonymity allows the theft of intellectual property, but anonymity also permits people to come together in settings that gives them some basis for free expression without identifying themselves.
None of this will be easy. I think that’s a fair statement. I think, as I said, we all have varying needs and rights and responsibilities. But I think these overriding principles should be our guiding light. We should err on the side of openness and do everything possible to create that, recognizing, as with any rule or any statement of principle, there are going to be exceptions.
So how we go after this, I think, is now what we’re requesting many of you who are experts in this area to lend your help to us in doing. We need the guidance of technology experts. In my experience, most of them are younger than 40, but not all are younger than 40. And we need the companies that do this, and we need the dissident voices who have actually lived on the front lines so that we can try to work through the best way to make that balance you referred to.
Secretary Clinton's answer is trying to balance competing interests, which is what good politicians do. If we want A, and we want B, and A is in tension with B, can we have some A and some B together? Is there some way to give up a little A in exchange for a lot of B? That's a useful way to start the discussion.
But sometimes you have to choose -- sometimes A and B are profoundly incompatible. That seems to be the case here. Consider the position of a repressive government that wants to spy on a citizen's political speech, as compared to the position of the U.S. government when it wants to eavesdrop on a suspect's conversations under a valid search warrant. The two positions are very differentmorally, but they are pretty much the same technologically. Which means that either both governments can eavesdrop, or neither can. We have to choose.
Secretary Clinton saw this tension, and, being a lawyer, she saw that law could not resolve it. So she expressed the hope that technology, the aspect she understood least, would offer a solution. This is a common pattern: Given a difficult technology policy problem, lawyers will tend to seek technology solutions and technologists will tend to seek legal solutions. (Paul Ohm calls this "Felten's Third Law".) It's easy to reject non-solutions in your own area because you have the knowledge to recognize why they will fail; but there must be a solution lurking somewhere in the unexplored wilderness of the other area.
If we're forced to choose -- and we will be -- what kind of Internet will we have? In Secretary Clinton's words, "the world’s information infrastructure will become what we and others make of it." We'll have a free Internet, if we can keep it.

Tuesday, October 26, 2010

Internet Modem

Internet ModemA modem is a modulating and demodulating device. It modulates an analog carrier signal and encodes the digital information sent in the signal, as well as it demodulates carrier signal in its bid to decode the information, which has been transmitted. I hope this has answered the question what does modem stand for. To repeat again, the word modem comes from two words, namely ‘modulator’ and ‘demodulator’. You may be faced with a question what is the function of a modem. The function of an Internet modem is to produce a signal, which can be sent over the Internet and reproduce the original date to be displayed on the monitors. One can make use of modems for airing analog signals from driven diodes to radio.


A Little About Internet Modem



The classification of modems is done according to the amount of data, which can be sent and received at any point of time. The unit of measurement used for conveying data transmission is bits per second, abbreviated as bps. There is another way of measuring the data transmitted, which is symbol rate measured in baud, which is the number of times the modem has switched its signal state per second. The signal state is when the data is been sent and received. The different types of Internet modems arecable, digital and dial up modems. Reading on what is a cable modem, will prove to be of help. Cable modems are required for broadband Internet, while for wireless Internet access using an appropriate modem is necessary.



Best Internet Modem



When you want to get Internet access at home, finding the best cable modem is the task at home. If you want wireless Internet access, then looking for the best wireless Internet modem is the task. We will now see Internet modem reviews, which will be of help in buying a wireless modem for Internet access.



Netgear DM111P DSL Modem
This is one of the best cable modems. It can be used for both home as well as office use. Installing and getting the modem working is not difficult, as it has easy installation process. It has about 24 Mbps downstream and 1.5 Mbps upstream. It is able to work with all the broadband Internet access provider.



Motorola SB5101 Series
This modem comes with high speed data service. Viewing any website is rather easy with this modem. Graphics also get downloaded faster with this modem. It can also be used for interactive PC gaming. Consumers can surf the net at a speed as high as 30 Mbps. It is powerful and easy to install.



Belkin N+ Wireless ADSL2+ Modem Router
This is one of the best modems, which can be used for Internet access. It also has a USB storage port. It is good for home use. Setting up this modem cum router is an easy task. The results of the speed of the Internet at long distance has come out positive.



iiNet BoB Modem Router
This is another very good modem cum router. If you want to use it for VoIP, then this modem router is not recommended. However, for regular home use it is among the best. Setting up this modem router is extremely easy. It can used to combine telephone, Internet and home networking without any other extra device.



The different Internet modem manufacturers also provider refurbished modems. If you do not want to shell out a lot of money on the modem, then you can opt for one of these models as well. These modems may come at less than half the original price. However, it is important to make sure that the modems have been refurbished from the parent company itself. Hence, it is best to visit the websites of the various modem manufacturers itself.

Website Hosting

Web hosts, in essence, are service providers that place your website on a computer which already is connected to the Internet. This in turn gives audiences or Internet surfers an opportunity to access your website. In fact, any website hosting service is just like a pc or a computer connected to the Internet. The only striking difference is that these web host services "serve up" numerous websites and hence as they're named as "server". 


With a very high speed Internet connection, web hosting services actually provide you space on the world wide web. Companies that host thousands of websites generally own a datacenter, which is a huge network of servers connected to the Internet. Owning a datacenter is very expensive and very few of them are owned by large web hosting services. Even some top web hosts rent space from datacenters and sell to service providers on their company's name. 



Choosing Website Hosting Services
Irrespective of innumerable and different plans, all website hosts provide various common features. You must check out these features while availing their services.



Diskspace
HTML webpages are very small ranging between 40 to 50 KB only and you can store lots of pages. Generally, images, videos take up more space but unless your website is not something very huge, a diskspace of 20MB is more than enough. These days, this is not a major issues as every service provider gives options of immense diskspace.



Bandwidth
It is generally defined as the monthly limits on the amount of data that is transferred to the person looking at your website from the web server that hosts your website on the Internet. Indirectly, bandwidth is the measure of your web traffic. Higher the web traffic on your website, more will be your bandwidth requirements.



Email Accounts
The number of email accounts you need to use for the services of the web host. Generally, you don't require many mails. 



Customer Support
This is a very important feature. Do you want email support or telephonic support? Unless you're not a huge website company, this feature is not required. Remember, every feature you avail, you have to pay for it.



Type of Server
This is a very technical aspect and depending on your needs and website usage, Linux or Windows 2000 will do the job. 



Other Features
There are many features offered by web hosting services. Unless you're not someone who owns a website with tremendous web traffic, it's not required to go into much details. If you desire for small business web hosting you don't require to know about very deep technical intricacies.



Top 10 Best Website Hosting Services
Here is a list of top 10 website hosting services with their pricing (approximate). Almost all of these services offer money back guarantee, although, their duration may vary. To know more about the plans of these services, visit their websites and get all the information in detail.

  • Yahoo Web Hosting: US$8
  • Green Geeks Hosting: US$7
  • SuperGreen: US$6
  • Bluehost: US$7
  • HostClear: US$4
  • FatCow Green Hosting: US$4
  • iPage: US$4
  • JustHost: US$4
  • InMotion: US$6
  • HostMonster: US$4

Free Website Hosting
With growth in the web world, free website hosting services have become a possibility. There are numerous free web hosting services in the market that offer their services although with some limitations. Two of the unique features of free hosting services are that they either offer asubdomain or a directory. By availing facilities of various service providers that offer free web hosting accounts, one can launch their small websites. Numerous free accounts allow you to use your domain name (technically called as free virtual hosting) while some others club your website address as a subdomain of their free hosting company (for example, www.nameofyoursite.freehosting.com). This is known as free subdomain hosting. Free website hosting is generally meant for very small websites that have the least potential to grow. In case, you don't care much about the growth of your small website, you don't expect customer support and you're fine with big banner advertisements appearing at the top of your website, then you can choose free hosting services. Professional websites or those that have a purpose of attracting tremendous web traffic never use free website hosting services. Following are some of the popular providers of free web hosting services.

  • Angelfire
  • Doteasy
  • FortuneCity
  • Google Sites
  • Host1Free
  • Jimdo
  • Tripod
  • uCoz
  • Webs
  • Weebly
  • Yola

You can visit these websites and know all relevant information about their plans and storage capacity. For low cost web hosting you can avail facilities of various inexpensive web hosting. Hosting a website has become an altogether different sector on the world web. With thousands of web hosting services offering various plans, choosing an ideal one is always confusing. Free web hosting, shared hosting, dedicated hosting and co-located hosting are some of the types of website hosting services and you can avail any of these services as per your requirement.

How to Become an Internet Celebrity

"In the future, everyone will be world-famous for 15 minutes" 

Maybe Andy Warhol had a Nostradamus like moment when he predicted this phenomenon because the sheer number of celebrities in the world today is mind-boggling. There is no criterion to what makes a person a celebrity but if you have some talent (or even none at all) you can be famous. You just need to tap the right medium. Who needs the radio or the television, when you have the whole world at your fingertips? Therefore, the question posed by many, how to become an Internet celebrity. In this article we try to tell you how you can get those not-so-elusive fifteen minutes of fame and add your name to the list of famous people.

How to Become Famous on the Internet 

First and foremost decide on what kind of fame you are looking for. And more importantly what is the talent that you possess that is unique and will instantly help you in becoming a celeb on the Internet. This is extremely important if you are seriously trying to figure out how to become an Internet celebrity. Most of the fame on Internet is about creating a personality that has a cult following. You need to have something that is both entertaining and informative. Becoming an Internet celebrity is not about being attention seeking but about being entertaining as well. Decide on what you are good at; connecting with people, gauging the style trends before they become trends, staying ahead of the curve. You need to understand how you can create a niche with the talent you possess. Once you know what is going to make you famous, you will also reach a logical conclusion about how you want to be famous. As a socialite, a techie, an activist, a gossip blogger, every and any of these things could give you the fame you are looking for. This is the first step in learning how to become an Internet celebrity.

Next you need to figure how to become an Internet celebrity whom people look up to. This is where case studies come into play. Study famous Internet celebs and see how they became famous on the Internet. Choose from the lives of Julia Allison, Perez Hilton, and Kyle MacDonald to learn how to become famous. And these are just some of the examples of people who have used the Internet well enough to become celebrities in their own right. Once you know what paths your favorite Internet celebrity used to gather his or her following, your task becomes much simpler.

So what's next in your road to world fame? The actual process of doing something for which you will become famous. Post entertaining videos on YouTube, blog about things that actually will have people flocking your blog. The best picks for a blog - fashion, gossip, movies, food, money. You will need to come up with a hook that makes your blog different from the rest of the information out there in the world. If you really want to learn how to become an Internet celebrity, then remember that the fame will be either instantaneous like Chris Crocker who got four million views on his Leave Britney Alone video in just two days. Alternatively the fame will come after months of perseverance and self-promotion.

One of the crucial steps to become an Internet celebrity is to promote yourself as much as you can. Publicity is key and without proper promotion your fame is going to flounder. Post about yourself everywhere, every social networking and micro-blogging site that exists likeFacebook and Twitter and every video sharing site there is. Remember that the brand is you and you need to sell it as well as you can. Look for free web pages which will allow you to upload the work that is going to make you famous. You need to network well and try and get mentions on other blogs and profiles. This will only increase the traffic to your page and increase your popularity. 

These steps should help you to master the process of how to become an Internet celebrity but remember that in order to get that fame you need to provide your audience some form of entertainment. Or the fame is going to be of a fleeting nature and will never go beyond that first fifteen minutes.

Monday, October 25, 2010

How to Setup a VPN (PPTP) Server on Debian Linux

VPN-ing into your server will allow you to connect to every possible service running on it, as if you were sitting next to it on the same network, without individually forwarding every port combination for every service you would like to access remotely.
Using a VPN connection also has the upshot of, if desired, granting access to other computers on the network as if you where in it locally from anywhere across the internet.
While not the most secure of the VPN solutions out there, PPTP is by far the simplest to install, configure and connect to from any modern system and from windows specifically as the client is a part of the OS since the XP days and you don’t need to mess with certificates (like with L2TP+IPsec or SSL VPNs) on both sides of the connection.
Did i get you interested? then let’s go :)

Preface

  • You will need to forward port 1723 from the internet to the server to enable the connection (not covered here).
  • You will see me use VIM as the editor program, this is just because I’m used to it… you may use any other editor that you’d like.

Server Setup

Install the pptp server package:
sudo aptitude install pptpd
Edit the “/etc/pptpd.conf” configuration file:
sudo vim /etc/pptpd.conf
Add to it:
localip 192.168.1.5
remoteip 192.168.1.234-238,192.168.1.245
Where the “localip” is the address of the server, and the remoteip are the addresses that will be handed out to the clients, it is up to you to adjust these for your network’s requirements.
Edit the “/etc/ppp/pptpd-options” configuration file:
sudo vim /etc/ppp/pptpd-options
Append to the end of the file, the following directives:
ms-dns 192.168.1.1
nobsdcomp
noipx
mtu 1490
mru 1490
Where the IP used for the ms-dns directive is the DNS server for the local network your client will be connecting to and, again, it is your responsibility to adjust this to your network’s configuration.
Edit the chap secrets file:
sudo vim /etc/ppp/chap-secrets
Add to it the authentication credentials for a user’s connection, in the following syntax:
username * users-password *
Restart the connection’s daemon for the settings to take affect:
sudo /etc/init.d/pptpd restart
If you don’t want to grant yourself access to anything beyond the server, then you’re done on the server side.

Enable Forwarding (optional)

While this step is optional and could be viewed as a security risk for the extremely paranoid, it is my opinion that not doing it defeats the purpose of even having a VPN connection into your network.
By enabling forwarding we make the entire network available to us when we connect and not just the VPN server itself. Doing so allows the connecting client to “jump” through the VPN server, to all other devices on the network.
To achieve this we will be flipping the switch on the “forwarding” parameter of the system.
Edit the “sysctl” file:
sudo vim /etc/sysctl.conf
Find the “net.ipv4.ip_forward” line and change the parameter from 0 (disabled) to 1 (enabled):
net.ipv4.ip_forward=1
You can either restart the system or issue this command for the setting to take affect:
sudo sysctl -p
With forwarding enabled, all the server side settings are prepared.
We recommend using a “Split Tunnel” connection mode for the VPN client.
A more in depth explanation about the recommended “Split Tunnel” mode, as well as instructions for Ubuntu Linux users can be found in the “Setting up a “Split Tunnel” VPN (PPTP) Client on Ubuntu 10.04” guide.
For windows users, follow the guides below to create the VPN client on your system.
PPTP VPN Dialer Setup on XP (split tunnel)
We will create a regular VPN dialer with one note worthy exception, that we will set the system to NOT use it as the “Default Gateway” when connected.
Skipping this step will limit the connecting computer’s surfing speed to the VPN server’s upload speed (usually slow) because all of it’s traffic would be routed through the VPN connection and that’s not what we want.
We need to start the connection wizard, so we will go to control panel.
Go to “Start” and then “Control Panel”.
xp-vpn01
*If your system is setup with the “Classic Start Menu” you need to just point on the “Control Panel” icon and then select “Network Connections”.
In “Control Panel” double click “Network Connections”.
xp-vpn02
Double click “New Connection wizard”.
xp-vpn03
In the “New Connection wizard” welcome screen click “Next”.
xp-vpn04
Select the “Connect to the network at my workspace” option and then “Next”.
xp-vpn05
Select the “Virtual Private Network connection” option and then “Next”.
xp-vpn06
Give a name to the VPN connection.
xp-vpn07
Type in the name of your VPN servers DNS-name or IP address as seen from the Internet.
xp-vpn08
Optionally You may choose to “Add a shortcut to the desktop” and “Finish”.
xp-vpn09
Now comes the tricky part, it is vitally important you do NOT try to connect now and go into the dialer’s “Properties”.
xp-vpn10
Go to the networking tab and change the “Type of VPN” to “PPTP VPN” as shown in the picture below (this is optional but will shorten the time it takes to connect) then go into “Properties”.
xp-vpn11
On the next window go into “Advance” without changing anything else.
xp-vpn12
On the next window, uncheck the “Use default gateway on remote network” option.
xp-vpn13
Now enter the connection’s credentials as you set them on the server and connect.
xp-vpn14
That’s it, you should now be able to access all the computers on your network from the XP client… Enjoy.

PPTP VPN Dialer Setup on Win7 (split tunnel)

We will create a regular VPN dialer with one note worthy exception, that we will set the system to NOT use it as the “Default Gateway” when connected.
Skipping this step will limit the connecting computer’s surfing speed to the VPN server’s upload speed (usually slow) because all of it’s traffic would be routed through the VPN connection and that’s not what we want.
We need to start the connection wizard, so we will go to the “Network and Sharing Center”.
Click the network icon in the system tray and then “Open Network and Sharing Center”
win7-vpn1
In the Network center click on “Set up a new connection or network”.
win7-vpn2
Select “Connect to a workplace” and then “Next”.
win7-vpn3
Click on the first option of “Use my Internet connection (VPN)”.

win7-vpn4
Set the address of your VPN server as seen from the internet either by DNS-name or IP.

win7-vpn5
Even though it won’t connect now because we stil need to go into the dialer’s properties, Set the username and password and hit connect.

win7-vpn6
After the connection will fails to connect (that’s normal), click on “Set up the connection anyway”.

win7-vpn7
Back in the “Network Center”, click on “Change adapter settings”.

win7-vpn8
Find the dialer we have just created, right click it and select “Properties”.

win7-vpn9
While its optional, for a faster connecting dialer, set the “type” of VPN to PPTP under “the “Security” tab.

Go to the “Networking” tab, select the IPv4 protocol and go into it’s properties.
win7-vpn10a
In the next window, click “Advance” without changing anything else.
win7-vpn11
On the next window, uncheck the “Use default gateway on remote network” option.
win7-vpn12
Now enter the connection’s credentials as you set them on the server and connect.
win7-vpn13
That’s it, you should now be able to access all the computers on your network from the win7 client.

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