Home Network Security

An excellent and elaborate article from CERT.
According to CERT.org, “This document gives home users an overview of the security risks and countermeasures associated with Internet connectivity, especially in the context of “always-on” or broadband access services (such as cable modems and DSL). However, much of the content is also relevant to traditional dial-up users (users [...]

Online Security Test Sites

Here’s a list of online security scanner put together by DoSHelp for your usage.

HackerWhacker
AuditMyPC
DSL Reports
Security Metrics

If you want the whole list go to DoSHelp link

Trojan Ports List

DoSHelp have listed all the known ports used by trojans to access your PC.
See the list of trojan-ports on DoSHelp 

Online Scanners

If you think your anti virus you’ve installed is unreliable or not working properly, you can try using online scanners.
Try using Kaspersky Online Virusscanner or OneCare

BHODemon

Don’t let the demon in the filename scare you. It’s actually a Browser Helper Object. To borrow the description from CastleCops “Think of BHODemon as a guardian for your Internet browser: it protects you from unknown Browser Helper Objects (BHOs), by letting you enable/disable them individually. BHODemon is free, runs in the “tray” area, and [...]