We have a SharePoint 2013 intranet portal, with need to publish ONLY a subsite to accessible through internethttp://intranetportal.net/English/Departments/Dept1/pages/default.aspx . We don't have ISA or TMG, we're using a layer 4 firewall.
I am thinking about publishing SharePoint using Web Application Proxy http://blogs.msdn.com/b/sambetts/archive/2014/12/10/publishing-sharepoint-with-windows-server-2012-r2-web-application-proxy.aspx but does this support publishing only the subsite, not the whole portal? If yes then how? What are the requirements?