After deploying the web service on the live server, you need to add following lines into your application’s web.config file under tag:
The above modification will be applied to single application only where the web.config resides.
But if you want to enable this for entire server/computer than edit the machine level web.config so it will be applicable to all web services you run on that system.
Note: Please keep in mind to select folder of .NET framework for which you want to modify this setting for entire server/computer.
I hope you can reduce your search from here.