How to block all websites (Deny All without type websites address) and allow only certain websites using my SEPM,
Running Version: 12.1.4013.4013
Thanks,
Qamrul
Here you go
Blocking a Website using Symantec Endpoint Protection
How to block all websites and allow only certain websites using Network Threat Protection Firewall rule.
How to Restrict Users to Specific Web Sites by Creating Firewall Rules for Managed Clients
https://www-secure.symantec.com/connect/forums/block-particular-website
Block certain websites
http://www.symantec.com/business/support/index?page=content&id=TECH95248
https://www-secure.symantec.com/connect/articles/how-block-internet-address-sep-manager-firewall-rule
http://www.symantec.com/docs/TECH92405
http://www.symantec.com/docs/TECH92097