AN UNBIASED VIEW OF WINBOX COPYRIGHT

If I enabled the default firewall in the Quick Config display screen And that i then went to IP->Cloud and setup a CNAME on my area what rule to I need to include for the firewall to allow myself to entry the router with WinBox remotely from (xxx.xxx.xx.xxx - my Office environment IP)I've a dozen or so RB3011 routers in service and have GRE tunnels