A network engineer is tasking a Cisco IOS router with Port Address Translation (PAT) to enable Internet access for internal endpoints on the network using the public IPv4 address assigned to interface GigabitEthernet0/0/1. Which two configuration steps are required on the router to accomplish this requirement? (Select two.)
- Define an IPv4 Access Control List (ACL) that permits traffic originating from the internal subnet.Cevap
- Execute the global configuration command `ip nat inside source list <ACL> interface GigabitEthernet0/0/1 overload`.Cevap
- CExecute the global configuration command `ip nat inside source list <ACL> interface GigabitEthernet0/0/1` without the `overload` keyword.
- DDefine an Access Control List (ACL) matching destination range to classify private local endpoints.
Cevap
To configure interface-based PAT (overload) on Cisco IOS, an administrator must define an ACL identifying the inside local host network and bind that ACL to the outside WAN interface using `ip nat inside source list <ACL> interface <interface-id> overload`.
Configuring interface-based Port Address Translation (PAT) requires creating an ACL that permits internal host addresses () and linking that ACL to the egress interface with `ip nat inside source list <ACL> interface GigabitEthernet0/0/1 overload`. The `overload` keyword is mandatory to enable layer 4 port tracking so multiple hosts can share one IP.
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Port Address Translation (PAT) interface overload configuration