![]() ![]() ![]() Now what happens if Bob didn't warn Christine? Aside from him going hungry, the point is the Firewall would block the packet and it would be refused access to the building. Christine knows where the packet, err- food should go because she was told 'Hey if someone comes in with chinese delivery (service/port number) from Chef Chu's (source) then send them to me at my office(destination).' that statement is our NAT policy. The delivery driver comes to the location and runs into (the firewall) Christine. The driver walks into the building by the address location only to find that it's a huge office building, an office number wasn't given and the receptionist is under strict orders not to let anyone pass without special permission.īob tells Christine, the receptionist that the delivery driver is on the way and to send the food up. ![]() Lets follow that abstract with a practical demo.īob calls a Chinese place and places an order for delivery. NAT stands for Network Address Translation and essentially allows you to re-direct traffic originally for Point A to Point B, it cannot however tell traffic where to go (what path to take) in order to find it's destination. In order to do that however we must know what we're actually doing -clicking on random buttons, filling out random info does little to help you for long term efficiency or diagnostics if something doesn't work. The first step to configuring an edge firewall/router is to first determine WHAT you want to do, and HOW you're going to do it. ![]()
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