The following command will disable the firewall on a Windows Server 2008 Core install using the "PowerShell"
netsh firewall set opmode disable
The below will re-enable the firewall
netsh firewall set opmode enable
The following command will disable the firewall on a Windows Server 2008 Core install using the "PowerShell"
netsh firewall set opmode disable
The below will re-enable the firewall
netsh firewall set opmode enable