Confluence and SSL
Confluence can be configured to use SSL both as a client (i. e. when communicating with other services) and as a server (i.e. when communicating with a user's web browser or RSS client).
The process of configuring Confluence to serve content over SSL is described on this page: Running Confluence Over SSL or HTTPS.
The process of configuring Confluence to connect to other services (such as JIRA or LDAP) is described on this page: Connect to LDAP, JIRA or Other Services Via SSL.
SSL Configuration Troubleshooting
SSL Certificate Troubleshooting
SSL Browser Related Troubleshooting
SSL How-to Articles