You are asked to enforce user authentication using a captive portal before users access the...

 Captive Portal Functionality:

Captive portals are used to enforce user authentication by redirecting web browser requests to a login page until authentication is successful.

 Operation:

When a user connects to the network, their HTTP requests are intercepted and redirected to the captive portal login page. This process continues until the user provides valid credentials.

 Implementation:

Juniper Configuration:

shell

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set security authentication-web redirect-url "http:// "

set security zones security-zone interfaces host-inbound-traffic system-services http

set security zones security-zone interfaces host-inbound-traffic system-services https

set access profile captive-portal

This configuration ensures that all HTTP/HTTPS traffic is redirected to the specified captive portal for authentication.

 References:

Detailed configuration and operation are documented in "Tech Ops Managed Router Juniper Install Guide" and related documents​​​​.