Delete the external network and only use the internal IP, and cannot RDP the server

[Huan1]

When the virtual machine is created, there are internal and external IPs. When deleting the external network, only the internal IP is used, and the RDP server cannot be used.

[janusz_szpilews]

You might provide some more context to make clear what problem you are referring to.

Anyway, if a VM has only an internal IP address (and open RDP firewall port), you can connect to it from other machines on the same VPC network. If one of those machines has an external IP address, you may connect to it with RDP from your computer and set up another RDP connection to the target machine with the internal address only. This scenario follows the principle of the bastion host.

[Huan1]

Thanks for the reply. When installing the VM, I selected two networks: internal and external. However, after deleting the external network due to business needs, I only used the internal network IP address and could not access it using RDP. Is there any solution?

[MikaCloud]

Hi, Huan1

Also please check that you have permissive firewall rules for the internal network so that VMs can exchange with each other. As far as I know networks are established with one rule set for all - ban everything. So you need to change  this.

Best,

MC

[janusz_szpilews]

As I mentioned in my last post, you need just one VM with an external address connected to your private network to connect to it from outside. Next, you can use it as a jump/bastion host to set an RDP connection to any other machine on the private network. However, your business rules should allow at least one external IP address.