DNS Error and Network Connectivity Solution via Google Public DNS
September 23rd, 2011
My ISP, Digitel tried to fix my slow connection by doing the usual port reset and port relocation, while I am glad they didn’t change my IP or put me on their cache server (which they did before), this posed a new problem at my end. I wasn’t able to visit our SEO forum – and who knows what other websites which I probably thought to be down.
As it turned out I had a problem with my DNS not resolving. If you want to verify that you have a DNS not resolving problem, you can simply try to ping the website you want to visit in the CMD prompt. Simply type ping website.com, if the site loads and is alive and you have a DNS problem, the site will not return any byte, instead it will just send you this message: Ping request could not find host website.com
If you want to find out How to Resolve DNS to IP address you can follow these steps:
- Click Control Panel
- Double click Network Connection
- Right click on Wireless or Local Area Network (the network connection windows will open. You will the see : This connection uses the following items: scroll down until you see the Internet Protocol (TCP/IP) item and left click this once)
- Click Properties
- Click Advanced
- Click on the Option tab on top->you should see TCP/IP filtering in the Optional settings
- Click on Properties on this tab->Permit all should only be the one with radio button (green) on all three that you should see, the box on the Enable TCP/IP Filtering (All Adapters) should be left blank.
This will resolve the DNS name to the IP address of the site or blog you wish to connect to. Sometimes you will have to restart your PC in order for the changes to take place.
That didn’t solve my problem, so I tried another approach – that is fixing DNS Error and Network Connectivity Solution by changing my DNS. Your connection is usually set to find DNS automatically by default. This tutorial will let you change that to a preferred DNS (Google Public DNS).
There are a few way on how you can do perform a DNS Error & Network Connectivity troubleshoot. I’m going to mention here what I found to be the fastest and easiest method – that is using Google Public DNS.
Here’s a long tutorial straight from Google’s page.
I am using Windows so the excerpt of the tutorial found below is for that OS.
DNS settings are specified in the TCP/IP Properties window for the selected network connection.
Example: Changing DNS server settings on Microsoft Windows 7
- Go the Control Panel.
- Click Network and Internet, then Network and Sharing Center, and click Change adapter settings.
- Select the connection for which you want to configure Google Public DNS. For example:
- To change the settings for an Ethernet connection, right-click Local Area Connection, and click Properties.
- To change the settings for a wireless connection, right-click Wireless Network Connection, and click Properties.
- If you are prompted for an administrator password or confirmation, type the password or provide confirmation.
- Select the Networking tab. Under This connection uses the following items, select Internet Protocol Version 4 (TCP/IPv4) or Internet Protocol Version 6 (TCP/IPv6) and then click Properties.
- Click Advanced and select the DNS tab. If there are any DNS server IP addresses listed there, write them down for future reference, and remove them from this window.
- Click OK.
- Select Use the following DNS server addresses. If there are any IP addresses listed in the Preferred DNS server or Alternate DNS server, write them down for future reference.
- Replace those addresses with the IP addresses of the Google DNS servers:
- For IPv4: 22.214.171.124 and/or 126.96.36.199.
- For IPv6: 2001:4860:4860::8888 and/or 2001:4860:4860::8844
- Restart the connection you selected in step 3.
That’s it. I hope that solves your connectivity problem.