1. What is the Mode of vMX? I was curious because the default vMX mode has recently changed. vMX Setup Guide for Amazon Web Services (AWS) - Cisco Meraki https://documentation.meraki.com/MX/MX_Installation_Guides/vMX_Setup_Guide_for_Amazon_Web_Services_(AWS) > Change in default behaviour > > All new vMXens deployed post October, 31, 2022 will be deployed in Routed/NAT Mode Concentrator by default, existing vMX deployments will not be effected. If you wish to use the vMX in passthrough mode, please change the deployment settings to Passthrough or VPN Concentrator mode from the Security& SD-WAN > Configure > Addressing & VLANs page. 2. Have you set up a Route Table for return traffic on your AWS VPC? When configured in Limited NAT mode, only communication from the corporate LAN to the Windows Server on AWS is possible without setting a return route. Conversely, the AWS side will not be able to communicate with the corporate LAN. The reason is that in Limited NAT mode, addresses on the corporate LAN side are hidden by the source NAT.
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