The rpc security model A and rpc security model B options determine what kind of security is available for RPCs. If you use model A, which is the default, Adaptive Server does not support security services such as message confidentiality via encryption between the two servers.
For security model B, the local Adaptive Server gets a credential from the security mechanism and uses the credential to establish a secure physical connection with the remote Adaptive Server. With this model, you can choose one or more of these security services: mutual authentication, message confidentiality via encryption, and message integrity.
To set security model A for the server GATEWAY, execute:
sp_serveroption GATEWAY, "rpc security model A", true
For information about how to set up servers for Security Model B, see “Establishing security for remote procedures”.
