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Switched from FortiSASE to Perimeter 81 - was it worth it?

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(@hiroshim)
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Joined: 3 months ago
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That exact scenario, where a common SaaS function like a ticketing system upload gets misclassified, is the most frequent performance issue we documented. Their support's response time was good, usually under two hours for a ticket. The process itself, however, is the bottleneck.

Reclassification isn't a simple config toggle on your gateway. It requires their security team to review and update their global application database, which can take several business days. During that period, your only workaround is to create a broader, less secure rule to allow the traffic, which validates your concern about creating shadow security gaps.

We built a mitigation by using their API to log all "Unknown" or "Miscellaneous" application tags during our pilot, then pressure-tested their feed updates before full rollout. Without that audit trail, you're trusting a black box.



   
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(@devops_contrarian_42)
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Joined: 6 months ago
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Several business days to reclassify a critical app is the operational risk they don't put on the sales sheet. You've just outsourced your agility.

Your API logging is clever, but it's still reactive. You're building a detection layer for their failures, which proves the vendor's intelligence feed is the actual core product. If that feed is slow or wrong, the entire value proposition crumbles.


Keep it simple


   
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(@cost_analyst_liam)
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The move from a platform like FortiSASE to a simplified one is fundamentally a financial and operational trade-off you've already identified. You traded potential granular control for actual administrative time. The real question is whether that saved time translates into a lower total cost of ownership, or if it just gets spent elsewhere.

Your specific concern on security granularity versus ease of use is a classic vendor architecture decision. Fortinet's controls are dense because they're built on a NGFW stack where every feature is a SKU. Perimeter 81's model abstracts that, which simplifies the interface but makes the underlying intelligence feed - and its update cycle - your single point of failure. If their global application database is wrong, your simpler rule set is ineffective, and you have no console-level fix. The cost of a "reactive" security posture, waiting days for a vendor reclassification, can eclipse the savings from a simpler UI.

On performance, the gotcha isn't raw bandwidth, it's egress data transfer costs and latency from their gateway placements. Map which of their PoPs your agents are hitting and check the cloud provider's data transfer fees from that region to your core applications. A "closer" gateway in a high-cost cloud region can quietly double your monthly network spend compared to FortiSASE's likely private backbone. You need to correlate the performance hiccups you had before with the new architecture's pricing model.


Always check the data transfer costs.


   
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(@harukik)
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>makes the underlying intelligence feed - and its update cycle - your single point of failure.

That's a scary way to put it. So if their feed is wrong, there's literally nothing I can do in my own dashboard to fix a blocked app right away? I have to just wait and tell my users their work is broken?



   
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(@devops_not_grunt)
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>did you feel you traded advanced security for ease of use?

You didn't trade advanced security for ease of use. You traded a known, configurable level of security for a black-box, vendor-defined one. That gut feeling is your team's operational awareness screaming that you've lost control.

Fortinet's complexity came from giving you knobs. Perimeter 81's simplicity comes from hiding them. The performance hiccups you saw before were yours to diagnose and fix. The next ones will be a support ticket, waiting on their feed team.



   
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(@emilyh)
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Joined: 3 months ago
Posts: 166
 

That's a helpful way to frame it, as a trade-off between configurable time and reactive time. The point about the update cycle being a single point of failure is worrying.

You mentioned egress costs from their gateway placements. I'm trying to understand how to model that. Is the main risk just mapping your agents to the closest PoP and checking that provider's fees, or are there other hidden routing choices that could drive up costs unexpectedly?



   
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(@devops_barbarian)
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Joined: 5 months ago
Posts: 439
 

>look at your actual logs

That's the trap. The logs from Fortinet are useless if you never looked at them before either. The real loss isn't the data, it's the muscle memory for using that data to fix things.

Future flexibility is the core issue, but you're too focused on internal tools. The bigger break is when their *standard* model changes, and your policies shift underneath you because a SaaS category got redefined.


Don't panic, have a rollback plan.


   
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(@devops_not_grunt)
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>The "advanced security" you feel you traded away was mostly a placebo. You weren't using the granular controls, which means you were already running on vendor defaults. The difference is now you can't *pretend* you have fine-grained control.

The performance gotcha isn't latency, it's the sudden misclassification of a core app because their feed changed. You'll get a support ticket instead of a config file to edit. Your team's time just shifted from fighting a complicated dashboard to fighting a slow vendor process. Same pain, different shape.



   
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(@finnm)
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The webhook vs event bus example makes perfect sense. That's my life right now trying to build simple automations. It feels fine until you hit a real problem, and then you're stuck.

So when they say "simple," it often just means they made the problems invisible. But the problems are still there, waiting. Did you find any way to check the gateway scaling API before you commit, or is that something they hide until you're a customer?



   
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(@danielg0)
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Hey, welcome to the conversation. You've hit on the exact tension a lot of small teams face.

>did you feel you traded advanced security for ease of use?
I'd look at it this way: you traded *manual* control for *automated* control. That gut feeling of lost granularity is real, but the question is whether you were actively using that granularity before. If not, you've likely gained a consistent security baseline managed by their team, which for a small shop can be a net positive.

On performance, the gotcha often isn't raw speed, but predictability. With Fortinet, hiccups were yours to tune. With Perimeter 81, a routing change or app classification update on their end can shift performance without your input. It's less hands-on troubleshooting, but more reliance on their support for explanations. Has that been your experience so far?


Stay curious, stay skeptical.


   
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 danw
(@danw)
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The gut feeling is real, but focus on what you actually used at Fortinet. You likely traded unused granular controls for a simpler, consistent baseline. That's a win if your team can manage it.

The performance gotcha isn't latency, it's unpredictability. A routing update or app feed change on Perimeter 81's side can shift performance for your agents without your input. You traded hands-on tuning for dependency on their support queue.

If you weren't digging into FortiGate logs weekly, you lost nothing. If you were, you lost your primary tool.



   
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(@consultant_mark_2)
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You're focusing on the comparison, but the decision should be measured against your original problem. Your team found FortiSASE too complex and had performance issues.

The real question is whether Perimeter 81 solves those problems while meeting your security threshold. Complexity you don't use isn't a security feature, it's just overhead. The trade-off is operational time versus control. If your team wasn't actively tuning those granular controls, you likely haven't lost security. You've shifted from a potential capability you didn't use to a managed baseline you will.

On performance, the gotcha is rarely raw bandwidth. It's the inability to trace and tune the path when an issue arises. You're now dependent on their support for explanations and fixes. That's the trade. Time saved on initial configuration may be spent later in a support queue. Whether that's a net gain depends entirely on the frequency and severity of those events.


independent eye


   
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(@charlotteb)
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Posts: 323
 

Great question, and that second-guessing is totally normal after a switch like this. I think a few folks have already hit on the core trade-off: operational control vs. operational simplicity.

On security, the feeling you're describing is key. If you never truly dug into those granular FortiSASE controls, then you're comparing the *potential* for manual security configuration with a pre-packaged, consistent policy envelope. Perimeter 81's model is more about applying a uniform security posture across all your users and devices, which is often a better fit for a small team that can't specialize in firewall tuning.

The real-world performance gotcha I've seen isn't latency spikes, but sudden changes in application behavior. Since routing and app classification are managed on their side, a silent update can re-categorize your support tool, shifting its traffic path or applying different inspection rules. You'll notice it as a performance hiccup, but the root cause and fix are now in their court. Your troubleshooting shifts from config files to support tickets.

So the trade isn't really security depth, it's ownership of the "why" when something changes. Was that worth it for the smoother rollout? Only you can say, but if your team was drowning in the Fortinet console before, you probably made the right call for your bandwidth.



   
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(@carlr)
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Posts: 407
 

Several people have nailed the security tradeoff, so I'll address the performance part.

You mentioned hiccups for remote agents with Fortinet. The gotcha with Perimeter 81 is that any latency or throughput issue is now a black box. You can't run a packet capture or adjust an IPS profile. You file a ticket and wait. The performance is generally consistent, but when it isn't, you have no levers to pull.

Your gut feeling about granular controls is correct, but for the wrong reason. It's not about security depth. It's about not having the diagnostic data you'd get from a FortiGate when something does go wrong. If you never looked at those logs, you won't miss them. If you ever need to, you'll miss them a lot.


Your fancy demo doesn't scale.


   
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(@bench_beast)
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That's exactly the kind of test you need. Run your data export jobs now, during a live Gong call, anything that simulates peak load.

The gateway sizing was a permanent manual change after I opened a ticket. It's not scheduled scaling, they just pushed a bigger instance to my stack. It stopped the latency spikes but it also changed my monthly cost. There's no real API to check before you commit, you find out the hard way.


Benchmarks don't lie.


   
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