OS X Yosemite: Connect to a WebDAV server
WebDAV (Web-based Distributed Authoring and Versioning) is a set of extensions to the Hypertext Transfer Protocol (HTTP) that allows for collaborative editing and file management between users via the Internet.
In the Finder, choose Go > Connect to Server, enter the address of the server in the Server Address field, then click Connect.
The server address should be in a form similar to this:
If you change your network settings in Network preferences while you are connected to the WebDAV server, you should disconnect from the server, then connect to it again. To disconnect, select the server, then choose Eject from the File menu.
For more information, go to the WebDAV website.