There are a range of add-ons in the Marketplace that allow you to set up SSO for Confluence and Jira.
What type of SSO are you interested in? SAML, Kerberos, NTLM?
Disclosure: I work for TechTime, a Marketplace Vendor that sells EasySSO. Please do not hesitate to contact us via our Support Portal if you require help.
At the most simple level, if you're using Crowd, just tick the SSO check mark for each application.
I suspect that your question is a bit more complex than that. Could you explain what your user directories are, how you've drawn them in to Crowd and why SSO isn't working with it?
There are several ways of achieving SSO for Confluence and JIRA.
Atlassian Access is the natural choice for SSO and user provisioning if you are using the cloud version of the applications.
SSO is typically achieved through marketplace add-ons if you use server or datacenter versions.
As @Kat mentions, there are several protocols for achieving SSO, including Integrated Windows Authentication (Kerberos), NTLM, SAML and OIDC. The first protocol is used on trusted networks to give users access to Jira and Confluence through their Windows session. The strength of Integrated Windows Authentication is the user experience as users logged in automatically without typing usernames or passwords at all. In difference, SAML and OIDC let users login through an identity provider such as AzureAD / Office365 or Google Gsuite. The strengths of SAML and OIDC is that it works well across remote networks.
@Seema Abrol : What kind of SSO would you like to setup in your environment?
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