PCNSA · Question #390
Which three types of Source NAT are available to users inside a NGFW? (Choose three.)
The correct answer is B. Dynamic IP and Port (DIPP) C. Dynamic IP E. Static IP. Next-Generation Firewalls offer various Source NAT types to translate internal private IP addresses to external public IP addresses for internet access. These types support different mapping scenarios, from one-to-one to many-to-one address translation.
Question
Which three types of Source NAT are available to users inside a NGFW? (Choose three.)
Options
- AStatic Port
- BDynamic IP and Port (DIPP)
- CDynamic IP
- DStatic IP and Port (SIPP)
- EStatic IP
How the community answered
(30 responses)- A3% (1)
- B93% (28)
- D3% (1)
Why each option
Next-Generation Firewalls offer various Source NAT types to translate internal private IP addresses to external public IP addresses for internet access. These types support different mapping scenarios, from one-to-one to many-to-one address translation.
'Static Port' is not a standalone Source NAT type; port translation is inherent in Dynamic IP and Port (DIPP) or part of specific static mappings, but not a distinct primary NAT type.
Dynamic IP and Port (DIPP) allows multiple internal hosts to share a single public IP address by translating both their IP addresses and port numbers, conserving public IP addresses (often called PAT or overload NAT).
Dynamic IP enables internal hosts to acquire a public IP address from a defined pool of available public IP addresses, providing a many-to-many mapping without necessarily performing port translation for each connection.
'Static IP and Port (SIPP)' is typically used for Destination NAT when exposing internal services, mapping a public IP and port to an internal IP and port, rather than being a primary Source NAT type.
Static IP provides a consistent one-to-one translation, where a specific private IP address is always mapped to a dedicated public IP address, useful for hosts requiring a constant external identity.
Concept tested: Source NAT types and their characteristics
Source: https://docs.paloaltonetworks.com/pan-os/10-2/pan-os-admin/nat/nat-overview/source-nat
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