This solution applies to all Barracuda SSL VPN units.
Answer:When logging into standalone network connector and if you have multiple user databases, you must insert the user database as a prefix;
When logging in , in the authorization user box:
If you have a user named user, and databases named database1, and database2, the usernames would be:
So 'database1/user' would be the entire username. The password for each of these, being the same user, would also be the same.
Link to this page:https://campus.barracuda.com/solution/50160000000IbzAAAS