Meraki MX can't do everything that a full-blown Cisco ASA can do and that's because the user can't program every feature that they have. For some very advanced firewall features you might have to open a ticket with Meraki support and have them add a configuration setting for you using the command line, which users do not have full access to. Even then, we have found that there are some advanced settings that they simply can't do. Steer clear if you have a very large, complex environment that needs and advanced firewall. For that you'll need a Palo Alto or a large FortiGate
, something like that.