We are accessing our Identity Manager environment through http. Is there a way to disable http and use https?
Release : 14.4
For vApp HTTP over SSL is enabled by default:
For a standalone application, you will need to enable it using your application server of choice.
Example Jboss 7.2: https://docs.jboss.org/author/display/AS72/SSL%20setup%20guide.html
https://access.redhat.com/documentation/en-us/red_hat_jboss_enterprise_application_platform/7.2/html/how_to_configure_server_security/index
Same for disabling http - you need to remove https listeners in the application server.
As for Connector Server Certificates:
https://techdocs.broadcom.com/us/en/symantec-security-software/identity-security/identity-manager/14-4/configuring/Replace-OOTB-Provisioning-Certificates-with-Custom-Certificates/Java-Connector-Server.html