OpenDNS Protection is a safer, faster, smarter way to resolve all your
domain names while you surf the internet. How it works is that you
replace your current router DNS IP addresses with either OpenDNS Home or
Family. After this change, they will filter all your website queries,
protect, and filter out malicious and harmful domains. Think of DNS as
your address book to the internet and using OpenDNS will ensure that you
do not call malicious contacts by mistake.
The next thing you’ll want to do is add your home network to your OpenDNS account. Your IP address will be automatically detected, if not check your IP here whatismyip.com
If you have a dynamic IP address, you'll need to download the OpenDNS Updater. This is a lightweight service that runs on one of your computers and keeps your IP updated on your OpenDNS account.