Web Filter @ Word basis

Hi friends,

I am new to this group. I am using Fortinet 100D firewall. I want to apply the filter based on specific work. If any user want to open any information related to the same, Firewall should block that search/Website.

I tried to applied the same through Security Profiles >> Web Filter >> Enable Web Content Filter and then set following parameters --

Pattern Type = Wild Card, Pattern = Crypto, Language = Western, Action = Block, Status = Enable.

But this is not working. Can you please suggest me the correct way for the same.

Regards