I am using a Windows 10 Pro computer with Norton Security installed and have two VPN connections that I use alternately. One is to a Windows 2003 Small Business Server and the other to a Windows 2012 R2 Server.
With the Norton firewall disabled I am able, via the VPN, to connect to either of the machines using the Windows Remote Desktop application (RDP). I can do this using the hostname (e.g. Server) or the IP address of the server. I am also able to access the shared folders on each machine either by using the IP address (e.g. \\192.168.0.1) or by using the hostname (e.g. \\Server).
With the Norton firewall enabled the connection to the Windows SBS 2003 works normally but the connection to the Windows 2012 server fails unless the IP address is used - for some reason with the firewall enabled the machine is unable to resolve the hostname of the 2012 server.
RDP - gives the following error “Remote desktop can’t find the computer “Server”
Attempts to access shared folder on server result in “Network error - Windows cannot access \\server”
Something in the firewall settings appears to be blocking the name resolution with the 2012 Server but not the 2003 Server.
As I have tried every setting I can think of I would be grateful for any advice on what changes I need to make to the Firewall settings in order to be able to access both servers using their hostnames.