NAT operations and router configuration have already been described in Chapter 8. NAT is a mechanism that allows address conservation and at the same time increases the environment’s security level, as inside devices are not directly reachable from outside the network.
There are multiple ways to configure NAT on your router, depending on your particular requirements. To configure NAT, you need to tell the router which interfaces are on the inside and outside of your NAT network. You could actually swap internal addresses for a pool of NAT addresses, or, at the very least, a single . . .
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