I agree @mike318 it has been on my wishlist for a while to have a shared blocklist/whitelist for an entire org. I still like being able to individually set a blocked or whitelisted item but would be nice to have one master one as well rather than having to go through and manually add it to my 20 different networks.
Edit: We now mostly use OpenDNS Umbrella to do centralized blocking through our org.
Adam R MS | CISSP, CISM, VCP, MCITP, CCNP, ITILv3, CMNO
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