login methods allowed/not allowed based on group membership

[Jakob KN]

Hi folks! 

I'm trying to add Google SSO to our Jira (and Confluence for that matter) instance. 
Adding SSO as an available authentication method isn't an issue in itself, but we want only a specific group of users to be able to log in with basic authentication. 

To describe the use case, the majority of our users (group: jira-users) are employees of our company and have a company Gmail account, and we then have some externals such as freelancers (group: externals) who does not have a company Gmail account.

The users in "jira-users" should be required to use SSO, and not be able to use the basic authentication option. 

The users in "externals" won't be able to use SSO, but should instead be able to log in with basic authentication. 

I'm aware that both login options will be shown on the login screen, since the person viewing it isn't authenticated yet. But i guess there's not much to be done about that, apart from adding a info-banner instructing who should use SSO/basic auth.

How is this achievable in Jira (and confluence, if you know this as well).

Thanks in advance

Confluence DC version: 7.19.10
Jira DC version: 9.4.6

[Jakob KN · Accepted solution]

For anyone who might stumble on this post, I'll provide some follow-up info.

We ended up implementing the SSO add-on from MiniOrange.
With this add-on, you can specify that specific groups should use SSO login, and other groups should use basic authentication.
And, if you have several IDPs, the group-based settings can also be used to determine which SSO IDP the members of a group will be using.  

Atlassian's own SSO options (including crowd) was lacking quite a few needed configuration options, which were present in the MiniOrange plugin. 
 Additionally, when using Atlassian's SSO option and Crowd we had lots of issues with using Google as IDP and having 2FA enabled.
Which was also easily resolved with the mentioned add-on.

[itop]

I wish there is a way for this we need to do the same thing