We have a balance 310 as router/gateway on one of our networks. 14 Days ago we moved premises to our new office and received a new /29 IP address from our provider. I changed the IP addresses on the WAN side and the rest has remained unchanged. Everything works except RDP to internal machines. We do have an SBS 2011 server running as a domain controller and although that might be the cause I still want to see if the Balance might be at fault. My SBS server has RDP configured from any address (port 3389) to an internal address (port 3389). Other machines have a different port on the WAN (port 5000x) and the forwarding’'s all point to port 3389 on the respective local machines.
I can reach the SBS server via remote desktop but I cannot reach any of the other machines. I have tried to access them via host name as well as via Public IP address. I have also tried a ‘clean’ machine that is not a member of our SBS domain. I have also unplugged the SBS server from the network to see if that was the cause of the problem but that made no difference.
So I am totally at a loss here. This was working until shortly before our move.
Just to reiterate:
I have added each internal machine as a server
I have added a service: any address :5000x -> local IP:3389
I have created a firewall rule for each incoming connection on the respective port.
Again, this all worked before we moved location. Only the external IP addresses have changed, our internal network remained unchanged.
Thanks in advance