Hi Jerry! Thanks for your link! I'm thinking I don't need to change any thing and the default settings is all I need. Can any one confirm that.
By default, the NETGEAR Firewall rules will block and prevent any unauthorized access to your Local Area Network (LAN). Remote access to the LAN devices or applications will only be possible after an inbound or outbound firewall rule is added to the router/gateway. Inbound firewall rules are set of rules that would allow or permit access to the LAN services from the Internet -- the default rule blocks all incoming service requests. On the other hand, Outbound firewall rules would prevent or deny access to the Internet from the LAN devices -- the default rule allows all outgoing traffic.