I am suddenly facing problem to browse google from my office network and when users trying google it says connection time out and check proxy and firewall setting.
I checked some blocked traffic from logs which indicated content filtering policy (Proxy avoidance and Anonymize) blocking those traffic to resolve dns.google so I removed Proxy avoidance and Anonymize it for short time to check google services and found www.google.com page is not working but gmail and some other google service is working.
So I bring back Proxy avoidance and Anonymize as it was and tried bellow white listing which does not work. Any one please advice how I can move forward to find quick but secure solution?