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Firewall Throughput

Free Firewall Throughput calculator with clear step-by-step results.

About Firewall Throughput

Rule-heavy policies slow packet inspection and cut throughput.

Formula

Formula

Throughput = pps × packet size × 8 ÷ 1e6

Worked example

With the default values below, Firewall Throughput returns Estimated Throughput of 389.1. Change any input above and every figure here is recalculated in your browser.

Inputs used

Policy rulesminimum 1
1,000
Average packet size (bytes)accepts 64–9,000
512
Rules evaluated per packetminimum 1
500

Results

Estimated Throughput
389.1 Mbps
Packets per Second
95,000.00
Rule Penalty
0.1%

Step by step

  1. 1Values used
  2. 2Formula
  3. 3Estimated Throughput= 389.1 Mbps
  4. 4Packets per Second= 95,000
  5. 5Rule Penalty= 0.1

Assumptions and limits

  • The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 1 decimal place, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

How does this calculator work?

Rule-heavy policies slow packet inspection and cut throughput.

Why does this matter?

Stateful inspection and logging reduce it further.

Firewall Throughput – Calculate Estimated Throughput