Publish CRM on the web

Hi,

We have CRM 2013 on Premise installed at our servers, nowadays it is used internally. 

what i have been asked for is to publish the CRM 2013 on the web and enable our clients to log in and add some data. 

what is the best solution for this ? 

and how can i enable the clients to log in to crm when our users are configured through the Active directory ? 

please advise 

Thank you