Sara, the security administrator, must configure the corporate firewall to allow all public IP
addresses on the internal interface of the firewall to be translated to one public IP address
on the external interface of the same firewall. Which of the following should Sara configure?
A.
PAT
B.
NAP
C.
DNAT
D.
NAC
PAT – Port address translation – internal IP addresses (or rather IP+port) are translated to external ports.
NAT – Network address translation – internal IPs are translated to external IPs.
Typically, both are used. NAT for static servers (eg a web server), PAT for clients.
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