Multiple WAN OpenVPN with Cisco security appliance
Configuration - Site A
Site A has 2 WAN providers connected to Cisco MX100 security appliance on port 1 and 2 respectively.
MX100 and PFsense connected to Switch.
Server OpenVPN configuration
1. ISP1 & ISP2 – Cisco MX100 security appliance -- MS350 Switch -- PFsense ----- Site to Site Open VPN ---- Remote Pfsense --- Remote network
Question - Is this a valid configuration - Client OpenVPN request from remote pfsense can enter Site A ISP1 and response can go out on ISP2. This causes the client to terminate the tunnel as the response is not coming from ISP1. I think this configuration is causing our tunnel instability.
How to fix this?