Is there a feature for authenticating users via REST API?
Secure Proxy Server
12.52
12.7
12.8
The REST API for Authenticating and Authorizing users is part of the SPS (Access Gateway) Server called the Authentication and Authorization Web Services.
The documentation can be found
https://techdocs.broadcom.com/us/en/symantec-security-software/identity-security/siteminder/12-8/configuring/access-gateway-configuration/configuring-the-authentication-and-authorization-web-services.html
The Section about the REST API
https://techdocs.broadcom.com/us/en/symantec-security-software/identity-security/siteminder/12-8/configuring/access-gateway-configuration/configuring-the-authentication-and-authorization-web-services.html#concept.dita_83589c7cb4c6518eba67ea69ba998c95c546b285_AuthenticationRESTInterface