Siebel Portal Framework Guide > Integrating External Content > Understanding Portal Agents >
Portal Agents and Authentication Strategies
Portal Agents can be configured to support different authentication strategies:
- Simple Portal Agents. External application does not require any authentication parameters.
- Single Sign-On Portal Agents. External application requires authentication parameters.
- NCSA-basic Portal Agents send a username and password as part of the URL in plain text. NCSA is no longer widely used as an authentication mechanism.
- Form-based Portal Agents send authentication parameters as part of the body portion of the HTTP request.
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