How can I configure the custom zone for Sharepoint 2013? I need to update the Host header, port ,authentication provider and SSL?
For custom zone you need to extend the webapplication eq:-
Extending your Web Application
Go to Central Administration- Application Management-Manage Web Application -Select the Web Application -Go to Ribbon - Extend.
In the Create a new IIS website section, give the Web Application a name. Give the required port.
If you have https enabled, select Yes in Use Secure Socket Layer section.
In the next section, choose your type of authentication, which you want to use for this zone.
Now, click on save.