2.1.1 Server Security Settings
The WDS Control Protocol uses Security Service Provider (SSP) security provided by RPC as specified in [MS-RPCE] for sessions. The server SHOULD register the following SSPs, as supported security providers:
RPC_C_AUTHN_GSS_NEGOTIATE
RPC_C_AUTHN_GSS_KERBEROS
RPC_C_AUTHN_WINNT
The WDS Server MUST allow authenticated and unauthenticated access to RPC clients. The WDS Server SHOULD support the maximum number of concurrent calls supported by RPC, as specified in [MS-RPCE] section 3.3.1.5.8.