An Appliance to replace FREEBSD/Squid and OpenDNS

Hi, looking for an Hardware appliance that will serve as a DNS server, handle Internet restrictions (white/black lists), maybe Proxy.  We currently are using FREEBSD with Squid, OpenDNS. to do what we need to do, but too many issues and support issues.  Looking for something more enterprise level.
Any suggestion?
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Well, even though my recommendation is built upon FreeBSD it is still an excellent solution I believe. Download and try PFsense firewall. Version 2.2 will run on either VMware or Hyper-V, as well as nearly any x86 system. It has loads of features and add-ins available, has been around for years, and is well vetted and well regarded. Worth a shot!

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