Authentication Mechanisms Supported by WCF

1. Windows Authentication: WCF supports Windows authentication, which authenticates clients using their Windows credentials.

2. Username Authentication: WCF allows clients to authenticate using a username and password combination.

3. Certificate Authentication: WCF supports certificate-based authentication, where clients and services use digital certificates to verify identities.

4. Custom Authentication: WCF offers the flexibility to implement custom authentication mechanisms as per specific requirements.

These are some of the authentication mechanisms supported by WCF, providing secure communication between clients and services.