The owner of a web application asks the 8IG-IP Administrator to change the port that the BIG-IP device sends traffic to. This change must be made for each member in the server pool named app_pool for

The Local Traffic > Pools section is where pool members are defined, allowing the administrator to specify or modify the destination IP address and listening port for each backend server within the pool.

The Local Traffic > Nodes section primarily defines the IP addresses of backend servers, but not the specific service ports they listen on for traffic originating from the pool.

The Network > Interfaces section is used for configuring the BIG-IP device's own network interfaces, not the destination ports for backend servers.

The Local Traffic > Virtual Servers section configures the IP address and port that the BIG-IP listens on for client connections, not the ports to which it forwards traffic to backend servers.