How are you blocking youtube now? With nbar? Can you post the config that allows you to block it?
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Class-map match-any sites
match protocol http host "*youtube.com*"
Policy may blocksites
then input servicepolicy on the interface.. I am able to http like this but https only for youtube as it is going via google domain.
Make sure you has been checked youtube ip from nslookup.
here i found some ip that you can try to block :
U can try this :
Please rate if it helps.
Please note i am using 881 cisco router. I have tried what you said but unfortunately google domain is also blocking.Can you post exact config to guide me better.