0
We have an office network with Windows machines. We use Fortinet's VPN to access the network remotely, and open a remote desktop connection to our local computers. We have this one computer that won't accept Remote Desktop connections from the VPN.
From the VPN we can open a Remote Desktop connection to other computers. From our office LAN we can open a Remote Desktop connection to the problematic computer. We can ping from the VPN to the problematic computer, and yet we can't open a Remote Desktop connection.
Looking at the Windows Firewall settings didn't help - Remote Desktop has an inbound rule that allows access from all networks - public, private and domain.
zmbq
Posted 2020-02-06T14:07:06.133
Reputation: 343
There's not a machine in the local network with the same IP address as the remote/vpn network is there? (are the two networks on different ranges?) – Smock – 2020-02-06T14:33:20.237
Is that even possible without the machines notifying you about it? – zmbq – 2020-02-08T18:26:39.113
Yes because they exist in two seperate private networks. You only get notified (sometimes) when two machines connected to the same network are set to the same IP. If you have Network A, with machine A-20 as 192.168.1.20 and network B with B-20 as 192.168.1.20, there's no issue (they are seperate private networks) until machine A21 connects to network B through a vpn and tries to access 192.168.1.20 in network B. (There's no awareness between A-20 and B-20 to detect identical IP addresses) – Smock – 2020-02-10T13:29:20.317
The machine connected to the VPN is has a VPN address, which is a different network. Its original address is our Wifi network, which also has a different address range. – zmbq – 2020-02-10T20:01:16.633