If you're not using OpenDNS to secure your network and protect against phishing attacks, malware, botnets and DNS vulnerabilities, take it from me - you should. It also does a great job with internet filtering.
OpenDNS, chosen by Fortune 100 companies and more than 25,000 schools, provides comprehensive security services, including award-winning Anti-Phishing from PhishTank. In addition, OpenDNS is one of the only DNS services that was never susceptible to the largest and most threatening vulnerability ever discovered. Dan Kaminsky, the researcher credited with finding the flaw, personally recommends using OpenDNS.
In addition to Web and DNS security, OpenDNS provides comprehensive Web
content filtering and detailed network stats that let you see what's
happening on your network.