Suricata
Suricata: A capable free network IDS and IPS for teams prepared to manage self-hosted deployment. Ranked #1 of 37 in Intrusion Detection and Prevention Software by our editors (9.3/10); pricing: Free plan; best for free open-source network IDS and IPS.
At a glance
- Editor score9.3 / 10
- PricingFree plan
- Best forFree open-source network IDS and IPS
- Free planYes
- Paid fromFree
- Inline blockingYes
- Founded2009 · Lafayette, Indiana, USA
- Facts checked21 Sep 2026
Where it wins
- Combines signature and anomaly detection with inline prevention
- Supports protocol logging, PCAP analysis, Lua, and Eve JSON output
- Integrates with SIEM, Elastic, Splunk, Logstash, Redis, and Netfilter
Where it doesn't
- Requires self-hosted network deployment and operational management
- Does not decrypt encrypted traffic for TLS inspection
- Custom detection and rule management may require specialist expertise
Our verdict on Suricata
Suricata is a free, open-source network threat detection engine for home users, corporate organizations, government users, researchers, and developers. It covers network intrusion detection, inline network intrusion prevention, network security monitoring, and offline PCAP processing. The software runs on Windows, macOS, Linux, and self-hosted environments, making it a fit for teams that want direct control over network monitoring rather than a managed service. Its scope is focused on network traffic, with support for real-time detection and recorded traffic analysis.
Its feature depth is the main reason to consider it. Suricata combines signature-based and anomaly detection with protocol parsing and logging for HTTP, DNS, TLS, and files. Lua scripting allows custom detection logic, while live rule reloads support rule changes without stopping the engine. Eve JSON alerts and event output provide structured data for downstream analysis. JA3, JA3S, and HASSH matching add fingerprinting options, and the engine supports limited TLS inspection and protocol-anomaly analysis. It can also integrate with Splunk, Logstash, Elasticsearch, Kibana, SIEM systems, Linux Netfilter, and Redis.
Suricata is strongest for security teams that can operate network software, manage rules, and connect event output to an existing monitoring stack. Its open-source model avoids a product license cost and supports broad customization, but self-hosted deployment places installation, tuning, and ongoing operations with the user. It does not decrypt encrypted traffic, so it is not a complete substitute for tools that require decrypted-content inspection. Choose Suricata when free NIDS and NIPS capabilities, protocol visibility, and ecosystem integration matter most; choose an alternative when managed deployment or full encrypted-traffic decryption is essential.
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Suricata pricing
Suricata fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Deployment model | Software |
| Network scope | Network |
| Inline blocking | Yes |
| Encrypted traffic inspection | Yes |
| Cloud workload support | Not verified |
| Threat intelligence | Yes |
| Supported platforms | Network |
| Deployment | Self-hosted |
| Platforms | Windows, macOS, Linux |
| Support | Community, Docs |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 7 integrations: Splunk, Logstash, Elasticsearch, Kibana, SIEM systems, Linux Netfilter … |
| Pricing | Free plan |
| Website | suricata.io |
| Facts checked | 21 Sep 2026 |
Suricata integrations
Suricata lists 7 integrations on its own site.
- Splunk
- Logstash
- Elasticsearch
- Kibana
- SIEM systems
- Linux Netfilter
- Redis
Alternatives to Suricata
- Palo Alto Networks Advanced Threat PreventionA strong fit for Palo Alto environments needing inline zero-day and exploit prevention.9.1
- Check Point Intrusion Prevention System (IPS)Enterprise IPS combining signature, behavioral, and virtual patching defenses.8.9
- Trellix Intrusion Prevention SystemA broad hybrid IPS for organizations needing inline blocking and malware defense.8.8
See all Suricata alternatives →
Suricata vs the competition
- Suricata vs Palo Alto Networks Advanced Threat Prevention
- Suricata vs Check Point Intrusion Prevention System (IPS)
- Suricata vs Trellix Intrusion Prevention System
- Suricata vs AhnLab AIPS
- Suricata vs Hillstone Network Intrusion Prevention System
- Suricata vs Snort
Compare Suricata with any tool side by side →
Also Ranked In
Suricata is ranked in 2 of our directories.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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