OpenDNS, which THREAT LEVEL highly recommends, is a free replacement to domain name service usually provided by ISPs. DNS is essentially a constantly changing phone book for the internet. When you want to surf to wired.com, your computer asks a DNS server to translate the name of the site into the numeric IP address where the site currently lives. OpenDNS is attempting to add intelligence to this service by removing confirmed phishing sites from the database, letting users choose to have craigslist.cm automatically changed to craigslist.com to prevent domain squatting, and providing a keyword browsing service that works on multiple computers.
Now users can also choose to block adult content, from tasteless sites to hardcore pornography, by signing onto a new service. It’s easiest to use for large networks or individuals with a static IP address. Those who have a dynamic IP address (most common with dial-up or lower tier broadband connections) need to jump through an extra hoop by installing a program that reports your computer’s current address to OpenDNS. It’s relatively straightforward, though OpenDNS could do a better job of providing instructions.
Even if you aren’t interested in a free internet filter, you may well find that OpenDNS can keep you online when everyone else is timing out.
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