Challenge 7 : AUSF

AUSF stands for “Authentication Server Function,” It is a core network element responsible for handling authentication and security-related functions for the 5G network.

The main tasks performed by the AUSF include:

• Authentication: The AUSF authenticates and verifies the identity of users (devices and subscribers) trying to access the 5G network. This process involves validating the user’s credentials and ensuring that they are authorized to access the services provided by the network.
• Security Key Management: AUSF is responsible for generating and distributing security keys used for secure communication between the user equipment (UE) and the network. These security keys are essential for establishing secure connections and ensuring data privacy and integrity during data transmission.
• Subscription Information Management: AUSF stores and manages subscriber-related information, such as subscriber profiles, authentication credentials, and security policies. It plays a crucial role in managing subscriptions and handling authentication requests from the network.

AUSF : Configuration

To configure the AUSF, you must provide the necessary information in the file located at “~/free5gc/config/ausfcfg.yaml”

• registerIPv4: 127.0.0.9
• bindingIPv4: 127.0.0.9
• port: 8000
•  nrfUri: http://127.0.0.10:8000
• mcc: 208
• mnc: 93

Navigate to the AUSF configuration file and modify the mentioned attributes with their respective values.

vim ~/free5gc/config/ausfcfg.yaml