Access Server 2.11 enables federated single sign-on (SSO) with SAML 2.0. For documentation and configuration guides, refer to Does Access Server support SAML?
SAML 2.0 is an industry-standard for securely exchanging SAML assertions that pass information about a user between a SAML authority (the identity provider or IdP) and a SAML consumer (the service provider or SP).
Access Server authentication services in version 2.11 and newer use this information to provide federated SSO for users authorized to use the VPN.
You can use a third-party SAML IdP to establish SSO access to the client portal and to authenticate before a VPN connection. Click here for more details.