secathomeOpenDNS Managed/Filtered DNS Service
This is a free service that helps filter DNS lookups to known malicious sites. You can configure it to filter additional content – i.e. pornography, violence, gambling, etc. – for more family-safe environment. Essentially you substitute the IP addresses of OpenDNS.org servers for those of your Internet Service Provider (ISP) and so web URL lookups occur using their servers. Additional advantage of using OpenDNS’s servers is fewer internet service outages. Often a home service outage is related to the ISP’s DNS servers being overloaded or malfunctioning. By ‘hard coding’ in the DNS servers for OpenDNS, you bypass your ISP’s DNS.

Security at Home
Computer security information for your home computer provided by Microsoft.

Home Computer Security from CERT
Your home computer is a popular target for intruders. Why? Because intruders want what you’ve stored there. They look for credit card numbers, bank account information, and anything else they can find. By stealing that information, intruders can use your money to buy themselves goods and services. This document explains how some parts of the Internet work and then describes tasks you can do to improve the security of your home computer system.

Blocking Unwanted Parasites with a Hosts File
The Hosts file contains the mappings of IP addresses to host names. This file is loaded into memory (cache) at startup, then Windows checks the Hosts file before it queries any DNS servers, which enables it to override addresses in the DNS. This prevents access to the listed sites by redirecting any connection attempts back to the local (your) machine. Another feature of the HOSTS file is its ability to block other applications from connecting to the Internet, providing the entry exists. You can use a HOSTS file to block ads, banners, 3rd party Cookies, 3rd party page counters, web bugs, and even most hijackers.