To connect your OpenVPN Client to an on-premises server behind a Site-to-Site VPN on AWS Cloud, you may need to configure routing and NAT settings on your OpenVPN server. Here are some steps to help you:
Check Routing Table: Ensure that your AWS VPC routing table contains a static route directing traffic from the VPN client subnet to the OpenVPN server instance.
NAT Mode: If using NAT mode, traffic from VPN clients will appear as if it's coming from the OpenVPN server itself. This usually requires no special configuration Patient Portal Summit Health
Routing Mode: If using routing mode, where the source IP of VPN client packets remains unchanged, ensure AWS security features are not blocking this traffic. You may need to implement a static route that directs replies to VPN client traffic back through the OpenVPN server instance.
Disable Source/Destination Check: Ensure that the EC2 instance security setting "Source/Destination Check" is disabled to allow traffic through.
If you continue to experience issues, reviewing the OpenVPN server logs and client logs can provide more insight into the problem. You can also refer to the OpenVPN documentation for more detailed troubleshooting steps.
Check Routing Table: Ensure that your AWS VPC routing table contains a static route directing traffic from the VPN client subnet to the OpenVPN server instance.
NAT Mode: If using NAT mode, traffic from VPN clients will appear as if it's coming from the OpenVPN server itself. This usually requires no special configuration Patient Portal Summit Health
Routing Mode: If using routing mode, where the source IP of VPN client packets remains unchanged, ensure AWS security features are not blocking this traffic. You may need to implement a static route that directs replies to VPN client traffic back through the OpenVPN server instance.
Disable Source/Destination Check: Ensure that the EC2 instance security setting "Source/Destination Check" is disabled to allow traffic through.
If you continue to experience issues, reviewing the OpenVPN server logs and client logs can provide more insight into the problem. You can also refer to the OpenVPN documentation for more detailed troubleshooting steps.
Statistics: Posted by dora87booth — Sat Jan 25, 2025 11:42 am