Thanks for the excellent and thorough reply. Unfortunately, we purchased Meraki/Umbrella through AT&T so I don't have full admin access to stuff. Additionally, they have be absolutely abysmal with help getting things set up. It's been almost a year, and still things are not functioning correctly and it's quite expensive. I just wish expensive enough to get a lawyer to see if we could get out of the contract. This is why I'm trying to learn/do this stuff myself (the whole point was to offload this kind of work so that I could focus on other things and be assured that things are configured correctly). @GreenMan wrote: I would certainly be pushing your SaaS providers as to why they still insist on this though, TBH. This isn't due to SaaS providers, we work in Financial Services which requires us to log in to many financial accounts on behalf of our clients. We get initial permissions and things set up and then try our hardest to keep things running without having to keep bothering our clients. If we are constantly losing our MFA tokens etc. we would be having to bother them constantly or at least every time we tried to log in and the user appeared to be coming from a new/different WAN IP address. We are a service business so keeping our clients happy is key hence we try to consolidate all of our traffic (and have been for years) partly for this reason. The other as you mentioned is it makes it easier to consolidate monitoring and security management. I wish I understood enough what the differences are in what we are using vs what you mentioned. I do have Intelligent Proxy and SSL decryption enabled on our policies and we are using Cisco Secure Connect and Umbrella is active and enabled on all of the clients. I don't understand, though, how this fits in with the firewall configuration. It looks like you may be referring to where a tunnel is set up and traffic is tunneled offsite to SIG as explained here: https://documentation.meraki.com/MX/Site-to-site_VPN/MX_and_Umbrella_SIG_IPSec_Tunnel This seems to confirm that it does indeed change the WAN IP address so not sure how/if this could work for us. Again, still curious as to if the built-in firewall could at least offer us some protection in the interim, but for whatever reason it still appears to be only affecting users who are connecting via VPN and/or the SD-Wan users.
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