Connect through a firewall using CData ADO.NET Provider for SharePoint
Connection string
This CData ADO.NET Provider for SharePoint connection string can be used for connections to SharePoint.
URL=http://sharepointServerName/;User=myUsername;Password=myPassword;
Firewall Server=fireWallIPorDNSname;Firewall User=fwUserName;
Firewall Password=fwPassword;