ℹ️ Preview calculator: calculation logic is still being verified. Output may not reflect realistic engineering values. Details

IDS/IPS Sizing Calculator

Size intrusion detection/prevention systems for your network

Total network bandwidth the IDS/IPS must inspect.
Number of active detection signatures/rules. More signatures require more memory and CPU.
rules
Smaller packets = more packets per second = higher processing load.
bytes
What percentage of each packet payload is inspected. 100% = full deep packet inspection.
%

Results

Packets per Secondpps
Required Processing CapacityGbps
Memory for Signature DBMB
Recommended Sensor RatingGbps
Sensors Needed
Estimated RAM RequirementGB
How it works: IDS/IPS sizing depends on bandwidth, packet rate, signature count, and inspection depth. Processing capacity scales with signature count (pattern matching complexity) and inversely with packet size (more small packets = more lookups). Memory: ~1.2 KB per signature + session state tables.