Which firewall technology is used to map multiple private addresses to a single public address?

Which firewall technology is used to map multiple private addresses to a single public address?

• A. DMZ
• B. NAT
• C. VPN
• D. Honeypot

Answer: (B)

NAT, or Network Address Translation, is used to map many private addresses to a single public address. It lets multiple devices on a private network share one public IP by translating each internal IP to that public IP and using unique port numbers to keep the connections distinct. This also keeps internal addresses hidden from the outside world and ensures responses are directed back to the correct internal host. Other options don’t perform this address mapping: a DMZ is a separate exposed network zone for services, a VPN provides secure remote access, and a honeypot is a decoy system for attackers.

NAT, or Network Address Translation, is used to map many private addresses to a single public address. It lets multiple devices on a private network share one public IP by translating each internal IP to that public IP and using unique port numbers to keep the connections distinct. This also keeps internal addresses hidden from the outside world and ensures responses are directed back to the correct internal host.

Other options don’t perform this address mapping: a DMZ is a separate exposed network zone for services, a VPN provides secure remote access, and a honeypot is a decoy system for attackers.