Runtime Configuration with the SOA Manager 
You can configure security settings for the service provider and service consumer for the runtime of Web services.
Settings
You perform pre-settings for this purpose during Web service design in the AS ABAP development environment. You will find pre-settings for Web Services in the SOA Manager (Transaction SOAMANAGER) under 
Application and Scenario Administration
Administration of Individual Services 
for services and consumer proxies in the tab page called Details.
Security Settings
In the runtime configuration, you can configure service providers individually or together using profiles. Not all security settings are available when using profiles.
Transport Guarantee
HTTPS
HTTP communication that is secured with SSL (Secure Sockets Layer).
For more information, see Using the Secure Sockets Layer Protocol with the AS ABAP.
Signature and Encryption
Messages are secured with an XML signature and XML encryption with asymmetrical keys.
More information: WS Security XML Signature/Encryption
Secure Conversation
Messages are secured with a pre-defined symmetrical key. The key is re-used in further calls.
More information: WS SecureConversation
HTTP Authentication
The authentication information is found in the HTTP header.
User Name/Password (Basic)
X.509 Certificate
Authentication with an X.509 certificate.
Logon Ticket
Authentication with an SAP Assertion Ticket.
More information: HTTP Transport Level Authentication
Message Authentication
The authentication information is found in the SOAP header.
More information: Using Message Level Authentication
User Name/Password (Basic)
Authentication with WS Security UsernameToken
More information: WS Security UsernameToken
X.509 Certificate
Authentication with a signed SOAP message, user authentication by certificate
More information: WS Security XML Signature/Encryption
SAML 1.1
Authentication with a signed SAML 1.1 Assertion
More information: SAML Token Profile
You choose one of the predefined security settings during the runtime configuration for the service consumer.
Recommended WS Security Scenarios
SAP has put together recommendations for you on combining authentication and transport guarantee mechanisms. You can also get information on what prerequisites you have to fulfill to implement the scenario in your systems.
More information: Recommended WS Security Scenarios