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Showing posts from March, 2014

Windows Can't Communicate With The Device Or Resource (Primary DNS Server)

Today I faced a strange network issue on my laptop while trying to access the Internet. My laptop failed to go online and while checking the Network and Sharing Center there is a red cross symbol displayed between my computer and Internet icons. It means there is no connection between my computer adapter and the Internet. While running Network Diagnostics, Windows showed an error message Windows can't communicate with the device or resource (Primary DNS Server) with two options to click either Explore additional options or Close the troubleshooter. Screenshot of the error message is shown below.


I opted to click Explore additional options to find if there any Windows remedy to the issue. The result was not much help.


So I decided to troubleshoot the issue by myself because the automatic Windows diagnostic tool failed to fix it.


Windows Can't Communicate With The Device Or Resource(Primary DNS Server)
By analyzing the error message, it is clear that my laptop is not online beca…

Make a Computer As DMZ Host On BSNL Modem

If your computer is barred from accessing certain web applications due to NAT or Firewall restrictions, you can overcome it either by port forwarding or by converting your computer as DMZ host. DMZ stands for De-Militarized Zone and the PC assigned as DMZ host is out of modem/router firewall protection. BSNL modem has the feature to assign a device connected to it as DMZ host. For that, we must enter the IP address of the computer on BSNL modem to assign as De-Militarized Zone. Since BSNL modem treats the IP address as DMZ host, you must assign the same IP address as the static IP address of the device which you want to use as De-Militarized Zone. Procedure to place a PC in De-Militarized Zone for BSNL broadband modem is provided below.

Facing Slower Internet Speed?

DMZ Host Configuration In BSNL Modem Login to Modem

By default, the login IP address is 192.168.1.1 and admin is the default username and password.

Click on the Security tab


Click on Virtual Server link

Enter the static IP a…

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Alex George
Alex George has Engineering graduation in Computer Science and an MBA in Finance. He had been working as a senior Network Engineer for ten years. His specialization is in Cisco products. Traveling is one of his hobbies and visited various places as part of his onsite work. He visited different places as part of his onsite work like New York, Dubai, London, etc. Right now Alex is a director of one of the leading career development firms in India, which trains students for UPSC, SSC, and PSC examinations. He guides a lot of students to get selection for various prestigious institutions like CBI, Income Tax Department, etc. Alex George is a stock market investor and a very active intraday trader. Engineering Background: He has a B.Tech in Computer Science and Engineering and passed different network and security courses like CCNA, CCNP (Security), CEH, and various Microsoft certifications. Finance Background: Alex has an MBA in Finance. He is an active intraday trader and a Share Market Investor. Webmaster Skills: Alex is a blogger since 2004. He has a working knowledge of HTML, CSS, PHP, and JavaScrip.