Become superuser or assume an equivalent role on the system where the console is running.
Roles contain authorizations and privileged commands. For more information about roles, see Configuring RBAC (Task Map) in System Administration Guide: Security Services.
Set a property to prevent the console server from responding to network requests, and restart the console server.
# svccfg -s svc:/system/webconsole setprop options/tcp_listen = false # smcwebserver restart
After the restart the console now only responds to a browser on the same system as the console server process. You cannot use a proxy in the browser, only a direct connection. You can also use the https://localhost:6789/ URL to access the console.