In addition to custom authentication methods configured with secure plugins,
Vault supports many standardized authentication methods by default. 

| AuthN method                                                            | Unique ID                                    | Configured with
| ----------------------------------------------------------------------- | -------------------------------------------- | ----------------
| [AliCloud](/vault/docs/auth/alicloud)                                   | Principal ID                                 | Not configurable
| [AppRole](/vault/api-docs/auth/approle#create-update-approle)           | Role ID                                      | Not configurable
| [AWS IAM](/vault/docs/auth/aws#iam-auth-method)                         | Role ID (default), IAM unique ID, Full ARN   | `iam_alias`
| [AWS EC2](/vault/docs/auth/aws#ec2-auth-method)                         | Role ID (default), EC2 instance ID, AMI ID   | `ec2_alias`
| [Azure](/vault/api-docs/auth/azure#create-role)                         | Subject (from JWT claim)                     | Not configurable
| [Cloud Foundry](/vault/docs/auth/cf)                                    | App ID                                       | Not configurable
| [GitHub](/vault/docs/auth/github)                                       | User login name associated with token        | Not configurable
| [Google Cloud](/vault/api-docs/auth/gcp#create-role)                    | Role ID (default), Service account unique ID | `iam_alias`
| [JWT/OIDC](/vault/api-docs/auth/jwt#create-role)                        | The presented claims (no default value)      | `user_claim`
| [Kerberos](/vault/docs/auth/kerberos)                                   | Username                                     | Not configurable
| [Kubernetes](/vault/api-docs/auth/kubernetes#create-role)               | Service account UID                          | Not configurable
| [LDAP](/vault/docs/auth/ldap)                                           | Username                                     | Not configurable
| [OCI](/vault/api-docs/auth/oci#create-role)                             | Rolename                                     | Not configurable
| [Okta](/vault/api-docs/auth/okta#register-user)                         | Username                                     | Not configurable
| [RADIUS](/vault/docs/auth/radius)                                       | Username                                     | Not configurable
| [TLS Certificate](/vault/api-docs/auth/cert#create-ca-certificate-role) | Subject CommonName                           | Not configurable
| [Token](/vault/docs/auth/token)                                         | `entity_alias`                               | Not configurable
| [Username/Password](/vault/api-docs/auth/userpass#create-update-user)   | Username                                     | Not configurable
