open-vault/website/source/docs/vault-enterprise/mfa/index.html.md
2017-08-08 23:48:31 -04:00

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---
layout: "docs"
page_title: "Vault Enterprise MFA Support"
sidebar_current: "docs-vault-enterprise-mfa"
description: |-
Vault Enterprise has support for Multi-factor Authentication (MFA), using different authentication types.
---
# Vault Enterprise MFA Support
Vault Enterprise has support for Multi-factor Authentication (MFA), using
different authentication types. MFA is built on top of the Identity system of
Vault.
## MFA Types
MFA in Vault can be of the following types.
- `Time-based One-time Password (TOTP)` - If configured and enabled on a path,
this would require a TOTP passcode along with Vault token, to be presented
while invoking the API request. The passcode will be validated against the
TOTP key present in the identity of the caller in Vault.
- `Okta` - If Okta push is configured and enabled on a path, then the enrolled
device of the user will get a push notification to approve or deny the access
to the API. The Okta username will be derived from the caller identity's
persona.
- `Duo` - If Duo push is configured and enabled on a path, then the enrolled
device of the user will get a push notification to approve or deny the access
to the API. The Duo username will be derived from the caller identity's
persona.
## Configuring MFA Methods
MFA methods are globally managed within the `System Backend` using the HTTP API.
Please see [MFA API](/api/system/mfa.html) for details on how to configure an MFA
method.
## MFA Methods In Policies
MFA requirements on paths are specified as `mfa_methods` along with other ACL
parameters.
### Sample Policy
```
path "secret/foo" {
capabilities = ["read"]
mfa_methods = ["dev_team_duo", "sales_team_totp"]
}
```
The above policy grants `read` access to `secret/foo` only after *both* the MFA
methods `dev_team_duo` and `sales_team_totp` are validated.
## Supplying MFA Credentials
MFA credentials are retrieved from the `X-Vault-MFA` HTTP header. The format of
the header is `mfa_method_name[:key[=value]]`. The items in the `[]` are
optional.
### Sample Request
```
$ curl \
--header "X-Vault-Token: ..." \
--header "X-Vault-MFA:my_totp:695452" \
https://vault.rocks/v1/secret/foo
```