“QaasWall” is an open-source Firewall (basic Network Security tool) for windows which uses IP security policy (IPSec) to block IP address automatically that means users does not need to make any efforts other than running the setup on the server. The word “Qaas” in Arabic means Tough which spells it as ToughWall. After installation all your previous rules (IPSec or Firewall rules) would get disabled and it works in layers which are mentioned below:
To secure Windows 2008 Server one of the steps which is normally performed is to disable the Administrator user and create a new user with administrator Privileges. But whenever you perform any action like opening server manager or open any MMC under that user, a popup asking for permission like below:
Proxy server is a computer system or application which is installed on computer system that works as a acts as an agent or channel for requests from clients looking for resources from other servers. You can check see this post for more information about installation and configuration of Squid Proxy.
What is DNS?
Before talking about the most discussed or talked DNSChanger Malware let me first tell you about DNS. DNS which stands for Domain Name System or Domain Name Server is a service which converts the user friendly names on your favorite websites to IP address. All the websites you know are running or hosted on some server but the server is identified only by the IP address and not by the domain name. Here DNS helps to convert the Name you have entered in browser to IP address. Without DNS you might have to remember the IP address of all your favorite websites (which is quite difficult as we browse and access hundreds of website), you wouldn’t able to access your emails or any other internet services.
What is DNSChanger Malware?
Software Security Researchers at matousec.com has developed a method which can bypass protections built in to many of the most popular anti-virus products like McAfee, Trend Micro, AVG, and BitDefender.
Milind Koyande is the Senior Research Engineer and his job is to work with new technologies, specially Cloud Computing / Virtualization Technology. His past projects include Government Sector initiatives, Backup and Disaster Recovery Solutions. Follow him on Twitter and Facebook.
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