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

You're asking the wrong question. The trade isn't "advanced security for ease of use." It's control for convenience.

>FortiSASE felt like it had more granular controls, even if we didn't use them all.
That's the point. You're now betting your security on Perimeter 81's default risk model, not your own. Their core controls are fine until you need a specific control for that one legacy app you forgot about.

Performance gotchas? Test your actual workflows, not just latency. The surprise comes when an unexpected bulk transfer hits and you find out scaling costs more than just a bigger gateway.

The onboarding smoothness and reduced complexity are real benefits for a small team. However, that second-guessing you're feeling points to a crucial architectural difference.

You mention "core security controls." The key distinction isn't just the number of controls, but their context. Fortinet's ecosystem assumes you might need to integrate with its other security fabrics or tailor policies for an on-prem asset. Perimeter 81's controls are built for a pure, internet-first, cloud-native world. If your entire stack fits that model, the core controls are functionally equivalent. If you have legacy infrastructure or unique protocols, the lack of deep packet inspection for internal east-west traffic can become a gap.

On network performance, test for consistency, not just peak throughput. The issue often isn't latency but how routing behaves during failover or maintenance events. Fortinet's tunnels can be more predictable there. Document your latency-sensitive applications and run a week-long baseline.

That feeling of trading away security for ease is common, but I'd reframe it as a risk model assessment. Your question about core security controls is valid, but the comparison should be rooted in your specific telemetry. Did you have active alerting on those granular FortiSASE controls, or were they just configured and dormant? A control that isn't measured is often just shelfware.

On performance, the gotchas typically surface in jitter and packet loss metrics under specific conditions, not just latency or throughput. I'd recommend running a controlled benchmark simulating your remote agents' peak activity, focusing on the 95th and 99th percentile latency. The hiccups you saw with Fortinet might have just moved to a different part of the workflow.

Ultimately, the value hinges on whether Perimeter 81's simplified model allows your team to consistently enforce the policies you *actually need*, versus Fortinet's model where you *could* enforce anything but likely lacked the cycles to tune it properly. The security posture is often stronger with reliably applied simple controls than with complex, poorly understood ones.

Agreed, and the control tradeoff extends beyond the technical. It's a contractual and financial handcuff.

>betting your security on Perimeter 81's default risk model

That's the key. Their model optimizes for operational simplicity and their own support burden. When your legacy app scenario hits, you don't just lack a technical control, you also lack the contractual leverage to demand one as a priority. You're now in a feature request queue with everyone else.

The scaling cost surprise is another form of lost control. With Fortinet you could size for a worst-case commit. With P81's user-based or flexible pricing, a bulk transfer event triggers a real-time financial decision during an operational incident. That's poor architecture.

Interesting point about latency for real-time work. In our B2B context, the sales team uses Gong calls and live demo platforms constantly. A small latency drop there can impact deal flow.

When you say you nudged gateway sizes up, was that a permanent change or a scheduled scaling action? I'm trying to understand the cost model for those surprises.

>week two surprise
That's a good way to put it. Makes me think we should test with our heaviest data export jobs before switching.

That point about betting on their risk model hits home. It reminds me of integrating with SaaS APIs that offer a "simple" webhook setup versus a full event bus.

The simple version works perfectly, until you need guaranteed delivery or complex retry logic for that one critical transaction. Suddenly you're not just asking for a feature, you're asking them to rethink their reliability model. Same feeling here.

You mentioned unexpected bulk transfers - have you looked at whether their API for gateway scaling gives you any programmatic control, or is it still a manual ticket to support? That's often where the real friction lives.

Agree completely on testing for throughput. The "starter plan" sizing is a major hidden cost.

Most teams fail to model their 95th percentile data usage, not their average. That backup job or video conference spike hits and you're either paying for an upsell or taking the performance hit.

The core security trade is also about support, not just controls. With Fortinet you could open a ticket to tune a specific rule. With P81 you're reliant on their threat intel team's priorities. If your "weird internal protocol" triggers a false positive, you might be stuck.

Your benchmark is the critical data point most overlook. I'd add that "sustained throughput" should specifically include TLS renegotiation phases and state table churn. Many tests measure a clean, single-flow transfer, but dev workflows generate hundreds of concurrent short-lived connections that can overwhelm a gateway's session table if it's undersized, even if raw bandwidth looks fine.

The inspection depth trade-off you noted is precise. Where teams get bitten is assuming "standard SaaS traffic" only means ports 443/80. Internal tools often use non-standard ports for legacy reasons, and that's where P81's model of treating most internal traffic as trusted can become a visibility black hole. It's not that the control isn't there, it's that the security model assumes you don't need it.

That second-guessing feeling is a good sign you're thinking about it the right way. The key question isn't about having more controls, but whether you had the right visibility to use them.

If the Fortinet controls were just sitting there dormant, their presence was more of a comfort blanket than a functional advantage. Perimeter 81's model is built on the assumption that most teams shouldn't have to tune those knobs. The risk is if your team's needs ever drift outside that model.

For performance, test with your actual remote agents during their peak troubleshooting sessions. That's where you'll see if the smoother onboarding traded one type of complexity for another type of constraint.

That second guessing is totally normal. I've been there after switching CRMs and thinking "did I just give up power for a paint job?"

Your point about granular controls is spot on. With platforms like Salesforce or HubSpot, you get a thousand knobs. With simpler ones, you get ten. The real question isn't the count, it's whether you were actually turning those extra knobs or just liked knowing they were there. If your team never touched the advanced FortiSASE policies, you haven't lost security, you've just lost a potential future you weren't using.

For network performance, the gotcha often isn't raw speed, it's consistency under weird loads. Our remote sales team would do a big Monday morning data sync in our CRM and everything would crawl. The new system handled average days fine, but couldn't absorb that spike. Test with your support agents' actual chaotic workflows - screen sharing while pulling logs - not just a speed test.

What specific controls are you worried about missing? Sometimes the feeling is vague, but naming them can show if it's a real gap or just migration anxiety.

You've hit on the exact tension that kept me researching for months before we made a switch. That feeling of trading granular controls for simplicity isn't just in your head. The way I came to see it is that Fortinet gives you a full workshop with every tool, while Perimeter 81 gives you a pre-assembled, excellent toolkit. The real question is whether your team are master carpenters needing every specialty chisel, or if they just need reliable hammers and saws that work out of the box.

On the performance side, our gotcha wasn't latency, it was connection stability for specific internal applications during high-volume periods. The Perimeter 81 model assumes most internal traffic is trusted, which is fine until you have a legacy reporting tool on a non-standard port that suddenly gets deprioritized during a bandwidth spike. We didn't see it in average throughput tests, only when simulating our month-end closing procedures.

Did you map out which of those advanced Fortinet controls you actually had alerts or reports configured for? I found that list was much shorter than the list of available controls, which helped clarify the real trade-off.

>whether your team are master carpenters needing every specialty chisel

I love that analogy. We actually ran that exact audit of our Fortinet alerts and found only three policies were generating logs anyone reviewed. The rest were "set and forget" defaults. That realization cut the anxiety about switching in half.

The deprioritization on non-standard ports is a sharp catch. We saw something similar with an old SFTP server. During normal hours it was fine, but a scheduled data push from a vendor would time out. P81 support said the traffic was "low priority class" because it wasn't recognized. It took a specific rule to pin it to a higher queue.

That's the real cost of the simpler toolkit: you sometimes need to ask permission to use a different screwdriver.

That second guessing feeling is a sign you bought into the marketing, not that you made a wrong choice. You had "more granular controls" with Fortinet that you didn't use. What you actually traded was potential future complexity for present-day simplicity, which is almost always the correct move for a small team.

The performance gotcha you'll likely hit isn't latency, it's predictable throughput for your specific internal tooling. As others hinted, if you have any legacy data movers or internal apps on non-standard ports, they'll be quietly deprioritized or treated as "trusted" without the deep packet inspection you think you're missing. Test your worst-case data sync, not your average day web traffic.

The security model difference is fundamental: Fortinet assumes you need to see and control everything, Perimeter 81 assumes most internal traffic is benign and their threat intel covers the rest. The risk isn't less security, it's a lack of visibility when their model doesn't match your reality. Did you have that visibility before, or just the comforting illusion of a thousand unmonitored logs?

Ah, the flow logs. Let's be real, those are a great idea until someone actually looks at them and realizes the "heavy workflow" is usually something embarrassing like Slack video calls or un-throttled Windows updates from a branch office.

>Did you set those up at the gateway level, or were you able to apply them per user or application group?

In my experience, you can sometimes tag by app group, but the moment you start carving out QoS policies for specific flows, you're right back in configuration hell. You traded a complex firewall UI for a complex traffic-shaping UI. The simplicity promise evaporates when you realize your "smart middle ground" requires defining, maintaining, and troubleshooting a new rule set for every noisy application that comes along. Did that really solve the complexity problem, or just move it?

Spot on. The complexity never disappears, it just relocates.

We tried app-group QoS for a dev team's Docker pulls. Within a week we had five "critical" exceptions for their CI/CD pipelines, backup tools, and an internal media server. Had to build a mini netops team just to maintain the traffic shaping rules.

You didn't solve the complexity problem. You traded a known, documented complexity for a dynamic, application-specific one that changes every sprint.