How can I block all websites and allow only some of the selected websites with the help of Network Threat Protection (NTP)?
You do not want the users to visit to any website except for certain sites, no matter what browser they use.
The above configuration can be done by creating only 2 firewall rules. Please follow the below steps to configure the rules.
Note: That Firewall Rule will not work if the proxy settings are configured in the browser.
The above rule is to block all the websites. To create a rule to allow only selected websites, please follow the steps below.
Note: Place the "Allow" rule on top of "Block" rule.
Assign the policy to the required group. This will allow only the selected websites and block all other websites.
Caution: If the above rule is applied to the SEPM itself, we need to allow Symantec domains in order to run LiveUpdate. This should be applicable to all machines where LiveUpdate will run.
Website blocking will only function if the computers have SEP's optional Network Threat Protection (NTP) component installed. If the NTP component is not deployed, the Symantec Endpoint Protection client will not have the ability to block access to websites.