Hello everyone

i got this wonderful link while browsing the internet for security.
Im sure it'll help you.

ShieldsUp

A free service called ShieldsUP! will quickly test the Internet connection on your Windows-based computer, determining whether it is fully secure or open to penetration. The evaluation will alert you to any vulnerabilities within your computer or praise you for how well your firewall is performing, while also offering suggestions for improvement.

Another test, "Probe My Ports," attempts to establish standard TCP Internet connections with basic, and often susceptible, Internet service ports on your computer. Successful connections demonstrate which of your ports are open, closed, or in stealth mode from passing Internet port scanners. Testing is conducted on the ports that correspond to various services, such as FTP, Telnet, finger, HTTP, NetBIOS, and IMAP.

Comprehensive and technical explanations, along with solutions, are outlined with the test results. Have fun testing !