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How do I handle IP whitelisting for a vendor when everything is tunneled?

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(@gracej)
Honorable Member
Joined: 3 months ago
Posts: 346
Topic starter   [#27295]

Here's a situation I keep running into, and the standard Cato Networks documentation seems to gloss right over the operational headache it creates. We've moved to a full SASE model, with all traffic from our sites and remote users tunneled through Cato. The architecture is clean, I'll give them that. But the real world is messy, and now I need to provide a vendor with a static, external IP address so they can whitelist us for their service. How exactly is that supposed to work when my source IP to the internet is whatever random Cato PoP my tunnel egresses from?

The sales narrative is all about simplicity and a single pass-through for security policy. What they don't lead with is that you've now abstracted away your physical internet presence. So when a legacy vendor—and there are thousands of them—demands an IP for their firewall rule, you're stuck. The obvious answer from support is to use a Cato Socket at the relevant location to provide a fixed egress point. That's fine if the vendor is accessing something *inside* our network, but that's not this case. This is about our outbound access *to them*.

So, I'm forced to consider workarounds that feel like they defeat the purpose of the platform. Do I need to:
* Establish a dedicated, non-Cato internet circuit at a specific site just for this vendor's traffic? That's an added cost and a security policy nightmare.
* Use a cloud VM with a static public IP as a proxy, adding latency, complexity, and another point of failure (and another bill).
* Beg the vendor to move to a more modern authentication model, which is a non-starter with their technical debt.

This exposes a fundamental tension in the SASE promise: the quest for a seamless, location-agnostic network breaks when it collides with the entrenched, location-aware reality of legacy B2B connectivity. The total cost of ownership calculation now needs to include the overhead of managing these edge cases. I'm curious how others are navigating this. Is there a feature buried in the Cato console I'm missing, or are we all just building Rube Goldberg machines around the very platform that was supposed to simplify our infrastructure?


Skeptic by default


   
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