Just got off a demo call with Cato Networks. Their platform is impressive—especially the single-pass architecture for security and networking. The live dashboard showing all global PoP latency and the built-in ZTNA workflows were slick. But as someone who's been burned by assuming the demo covers all the real-world gotchas, I wanted to share what they *show* versus what you really need to *ask*.
**What they typically showcase:**
* The management console with global network map.
* Policy creation for a "sales app" with ZTNA rules.
* Instant tunnel establishment from a simulated remote site.
* The built-in CASB and IPS features blocking a demo threat.
**Crucial questions to ask (based on my cloud infra background):**
1. **API and Terraform maturity:** Can I fully manage sockets, policies, and routing via API/Terraform? Ask for the provider documentation. I've seen platforms where the GUI is primary and automation is an afterthought.
2. **Kubernetes integration:** For containerized apps, how does traffic from a Kubernetes cluster (EKS, AKS) get routed and secured? Is there a native connector, or do I need to route everything through a VPC socket? What's the latency impact?
3. **Cost predictability:** The pricing per socket and data processing is clear. But ask for examples of "bill shock" scenarios. E.g., a sudden spike in east-west traffic between your own data centers triggered by a backup job—does that count? Get them to spell out what *isn't* counted.
4. **Observability depth:** Beyond the pretty dashboard, what logs can I export to my own SIEM (e.g., Splunk, Datadog)? Can I get raw flow logs? What custom metrics are exposed?
5. **Failover and scaling:** If my primary PoP has an issue, how is traffic rerouted? What's the actual RTO/RPO for a socket? Request the detailed network architecture whitepaper.
The goal is to move from "this looks cool" to "this can handle my specific hybrid architecture and ops model." Would love to hear from others who have gone through a POC—what questions revealed the most important gaps or strengths?
-- Amy
Cloud cost nerd. No, I don't use Reserved Instances.
DevOps lead at a mid-size SaaS shop, we run a multi-cloud setup with EKS clusters and have used Cato in production for about 18 months.
I'd focus your questions on these practical points:
1. **API and IaC readiness:** Their Terraform provider exists but lags. You can manage sockets and some policies, but complex routing and ZTNA rule ordering often requires the console. Expect to split your automation.
2. **K8s integration reality:** There's no native K8s sidecar or daemonset. You deploy a VPC socket in your cloud VNet and route all pod traffic through it. This adds 3-5ms of latency per packet in our tests, and you'll need to manage the routing tables yourself.
3. **True cost drivers:** The per-user/month pricing is clear, but data processing fees for east-west traffic between your own data centers or clouds can spike. We saw a 30% overage in the first quarter before we tuned internal app flows.
4. **Support for edge cases:** For legacy apps that can't use ZTNA, their split tunneling config is fiddly. Support is responsive but escalates complex routing issues slowly; get a named engineer if your setup is atypical.
Given your cloud infra focus, Cato is a strong pick if your main goal is simple SASE for remote users and basic cloud interconnect. I'd choose something else for a heavy, automated Kubernetes-first environment. Tell us the ratio of remote users to cloud app traffic, and if you need full IaC.
Automate everything.
Great points on the K8s latency. We kicked the tires on a trial and that 3-5ms per packet matches what we saw with our dev clusters. For us it was a dealbreaker because we run real-time analytics where every ms counts. Did you find any workaround?
Also on the cost side - I'm in marketing ops so I look at this from a budget angle. They never mention the east-west data processing fees in the demo. That's a nasty surprise. We had a similar overage with a different vendor and it took two quarters to untangle the routing.
One thing I'd add: their ZTNA policies for third-party contractors are a pain. No easy way to give temporary access for a specific app without messing with the whole rulebase. If you've got a lot of external partners, ask about that.
Trial first, ask later.
Your point about the API and Terraform maturity is spot on. In my experience, you need to press for specifics on the provider's resource coverage. Even if they claim full management, ask for the exact CRUD operations supported for a complex routing policy object versus a simple socket. The delta between what's documented and what's truly idempotent in production can be significant.
Regarding Kubernetes, the latency question is critical. Beyond just asking for the impact, you need the methodology. Is that 3-5ms figure for a packet round-trip within a single region, or does it include traversal to a distant PoP? You should also ask for the performance profile under sustained throughput, not just a single ping test, as the encryption overhead can become a cost multiplier on larger data flows.
Spreadsheets or it didn't happen.