On a Windows 2008 R2 server running RDS, suddenly the server cannot be accessed via RDP expect by a machine on the same subnet. It also cannot be pinged. Subnets cannot be accessed from that server at all (no pinging or mapping to anything in any other subnet). It cannot get to the Internet , though the Networking connection shows Internet as connected OK. i have checked the DHCP reservation, the DNS settings, flushed and registered, checked the adapter binding order, i have rebooted. I suspect a change in the firewall, some changes were made, am not managing the routing, but would like to know where to look on the Sonic Wall. Any suggestions would be appreciated.