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More All Systems Operational. All Systems Operational. Information Title. URL Name. Users are sometimes unable to download Duo Mobile from their native app stores. We recommend the use of the native app stores whenever possible to ensure automatic updates and full functionality. It is possible to sideload the application on some devices and operating systems: Android Users of non-standard Android devices are often unable to download Duo Mobile from their native app store.

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Keep calls private with end-to-end encryption Whether it's one-to-one calls, group calls or video messages, your conversations on Duo will always stay private with end-to-end encryption. Thus, while sending an Access-Reject response with the appropriate enrollment link would generally be more logical, using an Access-Challenge will provide broader compatibility.

If this option is set to true , then when an unenrolled user logs in, the proxy will send back an enrollment message in a RADIUS Access-Challenge response, but deny any subsequent responses to the challenge.

If set to false , then the proxy will send back the enrollment message in an Access-Reject response. Users will append a Duo passcode to their existing passwords. Note that this section never requires a client parameter. Use this for an LDAP integration in which the factor is automatically detected for each login. In the event that Duo's service cannot be contacted, all users' authentication attempts will be rejected.

By default, the proxy will listen on all interfaces. The key should not be encrypted or require a password. If set to "true" the default then multi-factor authentication will not be performed for the first successful LDAP authentication in each connection.

Use this if the device using the Authentication Proxy first connects as a service user and then authenticates the user who is logging in. Specify either the DN of a single user or an OU. Multi-factor authentication will not be required for these users. Set this option if the device using the Authentication Proxy first connects as a service user, disconnects, and then authenticates the user who is logging in with a separate LDAP connection.

Starting with v3. Additional OU or DN to exempt from multi-factor authentication. If "false", the incoming LDAP connection is disconnected immediately after a successful bind.

Defaults to "true"; keep LDAP connection open after a successful bind to allow additional queries. The session is closed upon receiving a subsequent bind request. Requires Authentication Proxy version 2. If "true", the proxy maintains open connections and permits reuse of these connections for multiple LDAP bind requests after completing 2FA.

The session is closed upon receiving a disconnect. One of: "ssl3", "tls1. If not specified, defaults to TLS 1. Configurable in version 2. If configured, this limits the SSL cipher suites used by the Authentication Proxy when acting as a server to the specific ciphers listed.

Include an individual cipher name or group of ciphers using the OpenSSL cipher list format. If not specified, any valid cipher suite is allowed. As of Authentication Proxy version 5. In versions 5. We recommend creating a service account that has read-only access.

This parameter requires Authentication Proxy v2. If service account credentials are specified in Authentication Proxy v3. The values for the [cloud] section are provided on the directory's properties page in the Duo Admin Panel as a downloadable text file. Copy the information from that file and append it to your existing authproxy.

The Duo proxy is a Windows server joined to the authenticating domain:. Note that the integration key differs but the API host is the same in both [cloud] sections; this reflects the requirement that the multiple syncs must be for a single Duo customer account:.

Only one [sso] section may be present in authproxy. Please refer to the complete Duo Single Sign-On instructions. This is useful in environments where client systems do not have direct Internet access to Duo.

See that specific Duo application's documentation for proxy instructions. Note that if you configure the Authentication Proxy to act as an HTTP proxy for Duo applications installed on other systems then the Authentication Proxy must be able to contact Duo's service directly. By default, the proxy will listen on all interfaces or inherit any interface specified in the [main] section. Multiple HTTP proxy configurations can be used by appending a number onto the end of the section name e.

Install Duo Authentication Proxy 2. You'll see a line similar to this:. Ensure that you are using TLS 1. For end-to-end TLS 1. Windows users should encrypt all passwords and secrets in the authproxy. There is no password encryption tool available for Linux authentication proxy installs, but you can protect access to the authproxy. Alternatively, open the Windows Services console services. If the service starts successfully, Authentication Proxy service output is written to the authproxy.

If you see an error saying that the "service could not be started", open the Application Event Viewer and look for an Error from the source "DuoAuthProxy". The traceback may include a "ConfigError" that can help you find the source of the issue. Stop and restart the Authentication Proxy service by either clicking the Restart Service button in the Windows Services console or issuing these commands from an Administrator command prompt:.

To stop and restart the Authentication Proxy using authproxyctl , from an administrator command prompt run:. Authentication Proxy service output is written to the authproxy. If you modify your authproxy. Open the Programs and Features Control Panel applet.

Locate the "Duo Security Authentication Proxy" item in the program list. Both the program name and the version column show the installed version e.

If you have Authentication Proxy version 5. If you are unable to start the Duo Authentication Proxy service, there may be an issue with your configuration file. Use the connectivity tool included with Duo Authentication Proxy 2.

Enable debug mode if you're experiencing issues with authentication or directory sync processes. This writes additional information to the authproxy. Additionally, if you contact Duo Support about any application that uses the Authentication Proxy, the support engineer will request this debug output as part of the troubleshooting process.

Save the authproxy. Starting with Authentication Proxy version 2. This tool is not backward-compatible with prior Authentication Proxy releases. As of version 2. Note that this is not a configuration utility. It won't walk you through setting up the Duo proxy services, but can point out basic misconfigurations and help you figure out issues such as an inability to listen on a port, inability to contact remote servers, inability to communicate with the Duo cloud service, and similar problems.

To always run the connectivity tool when the Duo Authentication Proxy starts, edit your authproxy. When run interactively it also echoes all test results to the screen, with passing tests in green and failing tests in red.

When run, the tool performs a series of tests against each configured section e. Configuration checks are run before connectivity tests, and if any configuration issues are found then the connectivity tests are not run. If all tests on a configuration section pass, then the output indicates that specific client or server section has no connectivity problems and does not print the results of each individual test.

If any tests on a configuration section fail or are skipped due to missing information or a failed prerequisite test, then all individual test results are reported for that section, including any tests that succeeded.

As of Authentication Proxy 5. The following table shows which tests are performed for the various section types permitted in authproxy. In addition to the sections listed above, the configuration as a whole is checked for the following:. All required keys are present All key values are valid for their expected data No unexpected keys are provided No invalid combinations of keys are specified Listen on configured port The tool will ensure that is is able to listen on the specified or default port and interface, for the appropriate protocol TCP, UDP, or SSL.

Checks for: - SSL key and certificate files exist, are readable, and are well-formatted PEM files - Certificate is not expired - Key and certificate match each other - Specified cipher list is parseable checking if it's actually usable happens above in the SSL connection check - If certificate was signed off by a CA, the entire cert chain eg.

As of version 5. In this example, the Duo proxy did not start and no connectivity checks were run due to the invalid configuration. Some tests were skipped due to missing information, and other tests were skipped because a prerequisite test failed or was skipped. If you open a case with Duo Support for an issue involving the Duo Authentication Proxy, your support engineer will need you to submit your configuration file, recent debug log output showing the issue, and connectivity tool output.

We've made collecting troubleshooting information easy with a script that gathers all the necessary files, scrubs them for passwords and other sensitive information, and creates a zip package ready for you to send to your Duo support engineer.

The script is included in version 2. Copies the current authproxy. Saves the zip file in the Duo Authentication Proxy base installation directory as duoauthproxy-support-datestring-timestring. On rare occasions you may wish to bypass Duo authentication for all users and devices that authenticate through your Duo Authentication Proxy. You can do this by running the proxy server in "primary only" mode. At then end of this time, the proxy automatically restarts in normal operating mode.

Primary only mode respects the failmode setting in any given section. Define the primary only mode duration by appending -t nn , where nn is the desired duration in minutes to a maximum of