Hi Friends,

In this blog i have added some Articles which can help to guide about firewall policy.

Symantec Endpoint Protection Manager - Firewall - Policies explained

How a firewall works

About Windows Firewall and Symantec Endpoint Protection's NTP

Symantec Endpoint Protection 11.0 Network Threat Protection (Firewall) Overview and Best Practices White Paper

http://service1.symantec.com/SUPPORT/ent-security.nsf/docid/2007121714495348

Best Practices for using Windows Firewall with Symantec Endpoint Protection 12.1

Default Symantec Endpoint Protection 12.1 RU1 Firewall Policy explanation

About firewall server rules and client rules

About firewalls and communication ports

Blocking a Website using Symantec Endpoint Protection

How to Restrict Users to Specific Web Sites by Creating Firewall Rules for Managed Clients

How to block all websites and allow only certain websites using Network Threat Protection Firewall rule.

How to block/allow website access using the Symantec Endpoint Protection Manager custom Intrusion Prevention Signature policy

http://service1.symantec.com/SUPPORT/ent-security.nsf/2326c6a13572aeb788257363002b62aa/9c561a4628b3c9a44925747f007b19cd?OpenDocument

How to block Web access to client with the help of firewall in a Proxy Environment

How To Block Internet address via Sep Manager Firewall Rule

https://www-secure.symantec.com/connect/articles/how-block-internet-address-sep-manager-firewall-rule

Video

Allow and Block websites using Symantec Endpoint Protection Firewall

https://www-secure.symantec.com/connect/videos/allow-and-block-websites-using-symantec-endpoint-protection-firewall

Hope it help all.

Thanks

Sumit G.