KAV 6.0.2.678 push intall from KAV admin Kit with policy applied disable windows built-in firewall, is that mean firewall will control by Anti-Hacker or no firewall has been on ?. by default firewall is not enable under Anti-Hacker on the Policy, should i enable it or enable the Windows firewall ?

if you do push installation with antihacker component selected, it will disable the windows firewall. If in the policy you have disabled antihacker , then its safe to on the windows firewall. If you decided to enable the antihacker , then the windows firewall should be disabled.