Yubico Forum

Can someone explain how synch works on Yubiradius?

If I have users on system A that have already authenticated once and have a yubikey assigned to them. Then I add Server B and import the users from ldap and then configure yubiradius to synch with A. Will it ever synchronize and update the users on Server B with the correct Yubikey information?

It seems to have synchronized a new user, but not existing users, which is why I ask how it works?

The other question I have is that the documentation seems to indicate port 80 is used for synch, but I'm not seeing anything hitting port 80 on my firewall, but it appears to be synchronizing, at least new key mapping information for users.

Any input would be appreciated.

Hello,

The YubiRADIUS has the basic synchronization for OTP and user-YubiKey mapping between the synchronized instances. The newly added users on AD can be added to all instances by setting automated periodical user imports to all instances. This can be done by configuring "Schedule" (Hourly, Daily, Weekly) under "Users Import" tab of all synchronized instances. You have to run the Users Import manually to each synchronized instance.

YubiKey mapping will get synchronized automatically, no need to assign YubiKey to users on synchronized instances.

FYI,
YubiRADIUS has limited synchronization capabilities as of the current version (i.e. only the states required for user authentication are synchronized between instances but not the configuration). When Synchronization is enabled (after starting from a steady state), the state changes to the YK-Map and YK-VAL are synchronized between the configured instances. That means User-YubiKeys mapping and OTP validation part is getting synchronized amoung the synchronized instances. There is no synchronization for AD/LDAP Users Import, User-Password authentication, YubiKey Import etc. However, if new YubiKeys are provisioned the corresponding AES secrets must be manually imported (using "Import YubiKeys" tab in the UI) into each YubiRADIUS instance in the deployment (even if synchronization is enabled).

Ideally, if synchronization is correctly configured on all instances a successfully assigned YubiKey to a user on one instance should be reflected on all other synchronized instances. Please note, to verify this on other instances you may need to refresh the webmin UI screen on the other instances as the UI is not automatically refreshed.

The synchronization uses HTTP GET method for synchronization between synchronized instances.

Please note, the synchronization of YRVA will work only with identical YRVA instances.

Hope this helps!

Thanks and best regards,
Samir.