Many services based on the entertainment industry, viz. the music and
movies, are geographically restricted because of licensing issues. The
video streaming service Hulu, movies on demand service NetFlix and
Internet radio service Pandora, for example, are available only within
the United States. Similarly, BBC iPlayer and Channel 4 are only for the
U.K. audience. But the global Internet population couldn’t be easily
kept away from such treasures. Many Internet users are getting around
the geo-location block using proxy, and VPN services in particular.
A
large number of VPN providers have sprung up in a short period of time
to meet demands. Unfortunately, they are all paid services and for
students and for those without a regular paycheck, even $5 a month is
expensive. Besides, they're are already paying for Internet
connectivity. Free VPN services
are available but they are always subject to abuse because of which
they either become slow, restrictive or shut down entirely.
Recently, a new free service called
Tunlr
has emerged that allows users to access services blocked outside the
United States. But Tunlr does not provide VPN service. It is a DNS
unblocking service that uses a combination of a DNS server and a
collection of proxies in various countries to go around the geographical
block. The user simply change their DNS servers to those provided by
Tunlr. After doing this, they are able to bypass the block and access
Hulu, Netflix, Pandora and any of the supported services.
Unlike
VPN, where the content is routed through the VPN servers, with Tunlr
users are able to stream directly from the blocked service with no
intermediary servers in between. Besides, Tunlr is free.
Tunlr can unblock the following services:
- US video streaming services: Netflix, Hulu, CBS, ABC, MTV, theWB, CW TV, Crackle, NBC, Fox, TV.com, PBS, Vevo, History, Lifetime TV,
- US audio streaming services: Pandora, Last.fm, Turntable.fm, Mog.com, iHeartRadio,
- Non-US services: BBC iPlayer (UK), Channel4 4oD (UK), iTV Player (UK), and Zattoo (Germany).
How Does Tunlr Work?
Tunlr
uses two main components - a DNS server and a collection of proxies
located in different countries. When your computer sends a DNS query for
a blocked website, for example, hulu.com, instead Hulu’s real IP
address, the Tunlr DNS server returns the IP addresses of a proxy server
operated by Tunlr in the US.
When your connection is received
by Tunlr’s proxy in the correct country, it is forwarded to the service
provider e.g. Hulu. For Hulu, you appear to be in the correct country
because it sees the IP address of the proxy server located in the US.
Once
the IP address check is passed, and your connection established, Tunlr
re-introduces your true IP address into the data stream so that the
video content is streamed directly to your computer and not through
Tunlr’s proxy server.
In order not to overwhelm their DNS servers with request, Tunlr
strongly recommends
that you switch to their DNS servers only when required to access the
blocked services. You can do this easily using tools such as Public DNS Server Tool or DNS Changer. If you are using an alternative router firmware such as DD-WRT and Tomato, it is also possible to use Tunlr DNS for only the supported sites and use ISP’s for all other sites.
Unfortunately,
many people are using their DNS servers in a permanent fashion, which
forced Tunlr to introduce restrictive measures. Tunlr wrote
in their blog.
Since
too many users are using our DNS servers in a permanent fashion, we
have to introduce some form of traffic shaping in order to make the
permanent use of our DNS servers less attractive with the ultimate goal
to keep Tunlr a free service. We’re going to implement artificial
response delays and tighten the existing request rate-limiters on our
DNS servers. This is going to slow down internet surfing a lot (!) for
anyone who’s permanently using Tunlr’s DNS servers.
And from their FAQ:
We’re not aiming to provide a professional 24/7 service. Tunlr is up when it’s up, and is down when it’s down.
If you want to use Tunlr, please pay heed to their request otherwise you are going to kill an amazing free service.