Tag: dns

Google Public DNS

Google made a big splash last week when it announced Google Public DNS. By changing your DNS settings on your Mac, PC or router you can take advantage of Google’s DNS service and speed up your internet experience. That’s the theory but does it work? First off, what is DNS?

DNS takes the meaningful domain names that you type in your browser and turns that into a numerical identifier that computers understand. An analogy that is often made is DNS is the phone book for the internet. Wikipedia has more if you want to delve deeper. With that out the way onto some testing. My current ISP is O2 but I actually use OpenDNS for DNS lookups. They’ve proven to be faster than my previous two ISP’s but I was interested in comparing O2, OpenDNS and Google Public DNS. To do that I followed the advice on TechSutra and ran the following code:


for i in "rememberthemilk.com" "digitaloutbox.com" "apple.com" "google.com" "flickr.com" "bbc.co.uk" "iand.net" "twitter.com" "digitalspy.co.uk"
do
for j in "87.194.0.51" "8.8.8.8" "208.67.222.222"
do
echo $j $i `dig @$j $i | grep Query | awk -F ":" '{print $2}'`
done
done

This basically compared the lookup time for the three DNS providers for a variety of sites that I used daily. The results of the test can be seen in the table below:

Domain O2 Google OpenDNS
rememberthemilk.com 111ms 69ms 29ms
digitaloutbox.com 179ms 36ms 27ms
apple.com 28ms 36ms 27ms
google.com 28ms 55ms 29ms
flickr.com 28ms 34ms 27ms
bbc.co.uk 28ms 35ms 27ms
iand.net 160ms 38ms 28ms
twitter.com 28ms 35ms 30ms
digitalspy.co.uk 29ms 35ms 28ms

As can be seen OpenDNS provided by far the best speeds out of the three I tested. I ran the test a few times and took average times to rule out any issues but the results were fairly consistent. Another method of testing is to try Namebench. This is a Google 20% app for Mac, PC and Linux. It compares a list of known DNS providers against your current DNS provider and provides a set of graphs and charts allowing you to benchmark any potential gains. It’s very slick.

My findings which seem to be backed up by others is that OpenDNS, for UK users, is a better option for speed than Google Public DNS. Do remember though that OpenDNS does redirect certain sites to protect from malware and domain misspellings, serving up adverts at the same time. In comparison Google offers no redirects at all which many people prefer.

The speed differences you do see may look small but remember that every little bit helps to improve your browsing experience and switching to a fast and reliable DNS provider can make a noticeable difference in your day to day usage.

So did you change your DNS after testing? We’d love to hear who you switched to and your findings – leave a comment below.

DigitalOutbox Episode 27

DigitalOutbox Episode 27
In this episode the team discuss Apple Lala, Google gaga.

Playback
Listen via iTunes
Listen via M4A
Listen via MP3

Shownotes
2:29 – Johnston Press Charge for Online Content
– The Johnston Press websites will either ask users to pay £5 for a three-month subscription to read the full articles, or direct them to buy the newspapers for 6 regional newspapers
– Sites in the pilot scheme include the Worksop Guardian, the Ripley & Heanor News and the Whitby Gazette. The Northumberland Gazette is also included in the trial. In Scotland, the Carrick Gazette and Southern Reporter are taking part. They own The Scotsman that does similar. FT also charges
– Johnston, which owns more than 300 papers across Britain and has suffered from a drop in advertising revenues, says the introduction of “paywalls” is an experiment to assess the impact of charging for content.
– Once you start restricting access on the websites, if you have content that can broadly be found somewhere else, then you really restrict the number of people coming to websites,” the Guardian’s director of digital content Emily Bell told the BBC. “I think it’s great that people are experimenting with lots of different models because undoubtedly we need to find more money in the market,” she added.
5:40 – Google Changes News Service
– Google limits access to free news
– Newspaper publishers will now be able to set a limit on the number of free news articles people can read through Google
– Under the First Click Free programme, publishers can now prevent unrestricted access to subscription websites.
– Users who click on more than five articles in a day may be routed to payment or registration pages.
– Change to spiders and robot – can index only preview pages – first couple of para’s only, subscribed content locked away
– If a publisher chooses to have spiders crawl their articles in this manner, they will be labeled with “subscription” within Google News
– Google blinked
8:46 – Google Public DNS
– Google launches DNS resolver
– http://code.google.com/speed/public-dns/
– Easy to change
– According to Google’s FAQ, the company will only keep temporary logs and erase all the information it collects through the public DNS service within 24 to 45 hours. The company promises not to keep any information that is linked to IP addresses in its permanent logs.
– I’ve switched – it’s fast but any faster than opendns?
– test via this site – http://www.manu-j.com/blog/opendns-alternative-google-dns-rocks/403/
– test shows opendns still faster, for me in the UK at least
16:05 – Google Dictionary
16:37 – Google UK Property Dimension
18:10 – Bing Maps Beta
– Needs Silverlight
– Street View (Street Side in Bing), Photosynth, Apps
– Nice animations, slick but hate the need for plugin
– Many of the features are US only at the moment
– Google search event this Monday – isn’t competition great
24:13 – Apple buys Lala
– Lala, unlike Apple’s iTunes, lets users play the music they own from the Web — or in tech industry parlance, from the cloud.
– Is it buying the company or the engineering talent?
– Lala’s engineers have built a service that music enthusiasts say is very easy to use. Lala scans the hard drives of its users and creates an online music library that matches the user’s collection, making it painless (and free) for people to get their music in the cloud.
– is this what the massive data centre that Apple is building is for?
– 2010 – the year of streaming wars
27:36 – iTunes 12 Days of Christmas
– 26 Dec – 6 Jan
– Free song or music video, app, TV episode or film
– Offer runs for 24 hours each day
28:55 – Square
– Let people quickly and easily accept physical credit card payments from their mobile phone
– small device attaches to the phone via the headset/microphone jack
– Device is free, works on iPhone and Droid
– Receipts via e-mail, sms
– Sign with your finger on iPhone screen
– Associate photo with account so vendor can check it is actually you
– Looks awesome – quick and a great way to pay
32:39 – End of the Crunchpad
– It’s no more – another mythical tablet bites the dust
– Breakup of the team, grubby takeover attempt by hardware partner – they got screwed basically.
– Looks like it was days/weeks from demo/launch
– Now to be settled in court – this will run and run
– Only one side of the story at the moment
– Could someone not step in and save it? Something smells fishy.
– Media event planned for Monday – Chandrasekar “Chandra” Rathakrishnan, founder and CEO of Fusion Garage, (who arrington blamed for killing the crunchpad) will speak to reporters (give his side of the story) and demonstrate “the device” both in a video call and in private briefings scheduled for later Monday at the St. Regis Hotel in San Francisco
37:12 – GT5 Time Trial Demo
– Dec 17th, Time Trial Competition
– participants will be able to race a Nissan 370Z around a new Gran Turismo 5 circuit. The fastest times recorded in each of the 20 participating countries will be advanced to a national final. An elite group of 20 drivers will then secure a place at the GT Academy.
– Still on track for March 2010 release
39:20 – World Cup shot in 3D
– Up to 25 games shot in 3D
– Using Sony tech
– No announcements on broadcasting – in the coming months more will be announced
– selected games will be broadcast live at “Fan Fest” locations in seven cities around the world: London, Berlin, Mexico City, Paris, Rio De Janeiro, Rome, and Sydney
– World Cup in 2006 saw many jump on the HD bandwagon – will 3D see same take up?

Picks
Ian
Click 2 Flash
– safari
– Block evil Adobe Flash
– Displays nice grey background allowing you to click if you want to use it
– Improve cpu, better battery life
– Higher quality YouTube, Play videos in QuickTime (H.264), not Flash

Chris
TrueCrypt
– The mother of all encryption
– Creates an encrypted drive that, once mounted works on the fly.
– Can encrypt a whole drive. Can encrypt a whole system. Can create mini encrypted areas (mount them as drives.)
– Can even create a “false bottom” drive if you want.
– PC, MAC & Linux

OpenDNS

One site that I always recommend to friends and family is OpenDNS. With a few simple changes to your router or computer you can move from using your ISP’s DNS server to the service provided by OpenDNS which I’ve found to be fast and reliable, certainly more so than the ISP’s I’ve used recently. So what is DNS and what does OpenDNS do?

DNS requests are made every day from your home connection. E-mails, web surfing, online gaming etc all make use of DNS. DNS turns real addresses (http://www.apple.com) into an IP address for the physical computer you want to connect to. It makes it easier to surf and also means an address can stay fixed while the computer changes in the background (to a different IP address). Usually you make use of your own ISP’s DNS server which in general works OK but from time to time can have issues. Speed, lack of redundancy and update issues are ones I’ve seen over the years.

OpenDNS provides a free DNS service that promises to resolve addresses quickly and also a few unique services that I certainly don’t get from my current ISP. Firstly there are anti-phishing features in place so that you will be warned and the phishing site intercepted should you be lead to one. There’s also spelling correction where OpenDNS will look at the URL you’ve typed and if it detects a typo it will redirect you to the correct site. Finally if you look up a site that cannot be resolved OpenDNS will display a page with alternatives.

ghhoogleopendns

What’s great about OpenDNS is that it’s simple to set-up and has helpful configuration page’s for a wide range of routers and computers. These take you through each step of logging in to the router, making the changes required and then checking that OpenDNS is set-up for your internet connection. There’s also other features like shortcut’s which you can take advantage off. Enter a shortcut name and the page that should be looked up if typed. For example, type blog to visit your blog without typing in the address, news to visit BBC News – the possibilities are endless. The nice thing about shortcuts is they apply across all your network so aren’t set up on a per machine basis.

The OpenNDS website also provides some stats about the number of requests, top domains and gives you the ability to block domains if you want finer control of the content that can be accessed on your network.

Although better performance can’t be guaranteed and in some cases will be very small I’ve always made a point of checking every few months to make sure that OpenDNS is a better option than my current ISP. With both O2 and Virgin Media, swapping to OpenDNS made quite a difference and in the case of my neighbours just over a week ago the difference to their OneTel connection was remarkable. Give it a try – nothing to lose and possibly a nice speed bump with enhanced security to gain.