Hello, If you don't have any other MXs that are HUBs, you can make everything go through that HUB and allow it in the Site-to-site outbound firewall rules. If it's a new installation, you can make them all HUBs and they will form a mesh between the three. You also have the option of making one MX the hub and the others spokes, but if you only have three, I would make them all hubs. Please correct me if you think I'm wrong. Best regards
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