How to configure OpenVPN for AWS VPC Peering with single private in 1st and single subnet in 2nd VPC?

Question

I've just installed OpenVPN from AMI Marketplace in my account and connected via LDAP to AWS Simple AD. To start with, here are the details below:

Bastion Host VPC Name: Bastion-VPC ---> Has single public subnet VPC ID: vpc-01000000000000000 CIDR: 10.236.76.192/26

Private Host VPC Name: Private-Environment-VPC ---> Has single private subnet VPC ID: vpc-02000000000000000 CIDR: 192.168.96.0/20

I've established VPC Peering between both subnets. Whenever I logon to any machine in Bastion-VPC, I can RDP to any machine in Private-Environment-VPC machines.

I've installed OpenVPN in Bastion-VPC and can normally RDP to any machines inside Bastion-VPC, but can't RDP / connect to any machines in Private-Environment-VPC.

I'd like to resolve above problem - establish VPC connection to Bastion-VPC and RDP to machines in Private-Environment-VPC using OpenVPN.

Did tried to follow steps noted at: https://forums.aws.amazon.com/thread.jspa?messageID=570840 and https://openvpn.net/index.php/open-source/documentation/howto.html#redirect, but of no help.

Thanks in advance.

Answer 1

After trying N number of solutions available, here is the problem:

1 - My OpenVPN was joined to AWS Simple AD

2 - There was no known way to allow access to all authenticated users to be connected to the private subnet hosted in other VPC

Solution

Add permissions for each user in "Allow To" Section for User Profile to allow access to private subnet hosted in other VPC.