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Firewall is an important part of computer security. And, you often get people selling you a new one. Windows always come with its solid firewall. This tutorial contains the answers of some important questions related to firewall security.

How a Computer Network Works: Packages, TCP/IP, Routers, Switches Proxy servers, Firewalls, the Internet, Browser

Despite updated operating system, browser, browser add-ons, installed firewall, and acute computer security settings, clever viruses, spyware or Trojans may find loop-holes to slip into your system. Not only in terms of performance, but in terms of stability and security too, these malicious software push you on back-foot. What to do next?

Just because most wireless routers have a firewall to protect you from the internet doesn't mean you're protected from others connected to the same network.

Test any website and see real-time if it's censored in China.

Threats related to Java programming language are increasing day by day. It also reminds about the old whack-a-mole arcade game. With the vulnerable version of Java, your computer becomes prone to malware or other threats.

Spamming is generally unsolicited communication targeted to deceive users with tricky messages from remote locations. However, most of you live in a misconception that spamming is confined only to email service. Such communication may leave you in puzzled state even with the Web-based services like Facebook, Twitter or LinkedIn.