Portium operates by using the institution's registered IP addresses. When a user accesses a provider's content through Portium, the request appears to come from the institution's IP, allowing access to subscription-based resources.

This method is essential for institutions operating under vendor agreements that require access through specific IP ranges.

With IP-based authentication, users can connect from anywhere without the need for a VPN, simplifying off-campus access while maintaining security.

Providers recognize the proxy's IP address and allow access to resources as if the request came directly from the institution.

Portium integrates with the institution's authentication system to verify user credentials before granting access.

Supported authentication methods include login with username and password, as well as one-time codes, depending on the institution's settings.

After authentication, Portium determines the user's permissions based on the institution's policy and grants access accordingly.

This ensures that only authorized users can access subscription-based resources while implementing the institution's access control policy.

Portium dynamically rewrites URLs to ensure that users remain within the authenticated browsing session while navigating between pages on the provider's site.

This process updates links, embedded resources, and scripts to maintain continuous proxy-based access without breaking authentication.

By automatically managing URL rewriting, Portium eliminates the need for users to manually change URLs or re-authenticate on each new page.

This feature ensures seamless access to provider content, even when navigating between internal and external resources within the session.