A network administrator is configuring an edge router for a branch office. The office contains 100 internal workstations using private IP addresses on the network that require simultaneous outbound internet connectivity. In addition, an internal web server at must accept inbound connections from external clients via a dedicated public IP address (). Which of the following implementation steps correctly satisfy these network requirements? (Select TWO.)
- Configure Static NAT for the internal web server to create a persistent one-to-one mapping between and .Cevap
- BConfigure Static NAT for the 100 internal workstations to assign each device a permanent unique public IP address from a single shared address pool.
- Configure Port Address Translation (PAT / NAT Overload) for the internal workstations to allow multiple private IP addresses to share a single public IP address using unique source port numbers.Cevap
- DConfigure Port Address Translation (PAT) to operate purely at Layer 3 by modifying source IPv4 addresses while preserving original Layer 3 protocol headers without examining TCP or UDP ports.
Cevap
Static NAT must be configured for the internal web server to provide a permanent one-to-one public-to-private mapping, while Port Address Translation (PAT / NAT Overload) must be configured for the internal workstations to multiplex outbound traffic over a shared public IP using unique Layer 4 source ports.
Static NAT provides a static 1:1 mapping between an internal private IP address and an external public IP address, which allows external devices to initiate connections to internal resources such as web servers. PAT (NAT Overload) allows multiple internal devices with private IP addresses to share a single public IP address by assigning a unique Layer 4 source port number to each connection session.
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Selecting and combining Static NAT (for persistent inbound server access) and PAT/Overload (for many-to-one outbound client access).