An enterprise firewall is configured to handle traffic between an internal network () and the Internet. The administrator configures Port Address Translation (PAT / NAT Overload) using the firewall's public interface IP address () for internal host outbound access. Simultaneously, a Static NAT rule is configured to map an internal web server () to a dedicated public IP address (). Which of the following statements accurately describe how address translation operates in this environment? (Select TWO.)
- Outbound packets from internal workstations undergoing PAT have their source IP address translated to and their source Layer 4 port numbers dynamically mapped to track individual sessions.Cevap
- Inbound connections destined for undergo a 1-to-1 destination IP translation to without requiring Layer 4 port modification.Cevap
- CMultiple internal hosts sharing via PAT maintain their original internal source port numbers across all outbound connections without port translation.
- DStatic NAT modifies Layer 4 TCP header sequence numbers and port fields to distinguish between internal hosts accessing the web server.
Cevap
Port Address Translation (PAT) dynamically translates both the private source IP address and Layer 4 source port numbers to track sessions for multiple hosts using a single public IP address. Static NAT performs a fixed 1-to-1 Layer 3 translation between a private IP address and a public IP address without altering transport-layer ports.
Port Address Translation (PAT) handles many-to-one outbound traffic by translating private source IP addresses to a single public IP address () while dynamically allocating unique Layer 4 source ports to track connections. Static NAT provides a bi-directional 1-to-1 mapping between a private IP address () and a public IP address () strictly at Layer 3 without changing port numbers.
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NAT and PAT Implementation Differences