# Best Intrusion Detection and Prevention Systems (IDPS) - Page 5

## How Many Intrusion Detection and Prevention Systems (IDPS) Products Does G2 Track?

**Total Products under this Category:** 65

### Category Stats (Aug 2026)

- **Average Rating:** 4.4/5 The average rating of products in this category, based on all submitted ratings

_Last updated: August 01, 2026_

## How Does G2 Rank Intrusion Detection and Prevention Systems (IDPS) Products?

**Why You Can Trust G2's Software Rankings:**

- 30 Analysts and Data Experts
- 1,600+ Authentic Reviews
- 65+ Products
- Unbiased Rankings

G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category.

## G2 Grid® for Intrusion Detection and Prevention Systems (IDPS)
 ![G2 Grid® for Intrusion Detection and Prevention Systems (IDPS) plotting products by satisfaction and market presence](https://www.g2.com/categories/intrusion-detection-and-prevention-systems-idps/grids.png?focus%5B%5D=1066&focus%5B%5D=71392&focus%5B%5D=88784&focus%5B%5D=1386549&focus%5B%5D=58203&focus%5B%5D=155622&focus%5B%5D=88524&focus%5B%5D=55529)

Highlighted products: Palo Alto Networks Next-Generation Firewalls, Check Point Quantum Intrusion Prevention System (IPS), Palo Alto Networks VM-Series Virtual Firewall, Cloud-Delivered Security Services, Check Point Infinity Platform, threatER, FortiGate IPS, and TrendAI Vision One - Cloud Security.

Underlying data: [Grid® JSON](https://www.g2.com/categories/intrusion-detection-and-prevention-systems-idps/grids.json?focus%5B%5D=palo-alto-networks-next-generation-firewalls&focus%5B%5D=check-point-quantum-intrusion-prevention-system-ips&focus%5B%5D=palo-alto-networks-vm-series-virtual-firewall&focus%5B%5D=cloud-delivered-security-services&focus%5B%5D=check-point-infinity-platform&focus%5B%5D=threater&focus%5B%5D=fortigate-ips&focus%5B%5D=trendai-vision-one-cloud-security)

**Sponsored**

### ManageEngine ADAudit Plus

ADAudit Plus is a UBA-driven auditor that helps keep your AD, Azure AD, file systems (including Windows, NetApp, EMC, Synology, Hitachi, and Huawei), Windows servers, and workstations secure and compliant. ADAudit Plus transforms raw and noisy event log data into real-time reports and alerts, enabling you to get full visibility into activities happening across your Windows Server ecosystem in just a few clicks. More than 10,000 organizations across the world trust ADAudit Plus to: 1. Instantly notify them about changes in their Windows Server environments. 2. Continuously track Windows user logon activity. 3. Monitor the active and idle time spent by employees at their workstations. 4. Detect and troubleshoot AD account lockouts. 5. Provide a consolidated audit trail of privileged user activities across their domains. 6. Track changes and sign-ins in Azure AD. 7. Audit file accesses across Windows, NetApp, EMC, Synology, Hitachi, and Huawei file systems. 8. Monitor file integrity across local files residing on Windows systems. 9. Mitigate insider threats by leveraging UBA and response automation. 10. Generate audit-ready compliance reports for SOX, the GDPR, and other IT mandates.

[Visit website](https://www.g2.com/external_clickthroughs/record?secure%5Bad_program%5D=ppc&secure%5Bad_slot%5D=category_product_list_llm&secure%5Bcategory_id%5D=1663&secure%5Bchosen_at%5D=2026-08-04T17%3A51%3A17Z&secure%5Bdisplayable_resource_id%5D=2380&secure%5Bdisplayable_resource_type%5D=Category&secure%5Bmedium%5D=sponsored&secure%5Bplacement_reason%5D=neighbor_category&secure%5Bplacement_resource_ids%5D%5B%5D=2380&secure%5Bprioritized%5D=false&secure%5Bproduct_id%5D=5691&secure%5Bresource_id%5D=1663&secure%5Bresource_type%5D=Category&secure%5Bsource_type%5D=category_page&secure%5Bsource_url%5D=https%3A%2F%2Fwww.g2.com%2Fcategories%2Fintrusion-detection-and-prevention-systems-idps%3Fpage%3D5&secure%5Btoken%5D=0dff09022c470840d65a5dc193cecdcd1e07f7dd48e8826b9038dc18d4c3cdfd&secure%5Burl%5D=https%3A%2F%2Fwww.manageengine.com%2Fproducts%2Factive-directory-audit%2F%3Futm_source%3DG2%26utm_medium%3Dtpac%26utm_campaign%3DADAP-network-detection-response&secure%5Burl_type%5D=custom_url)

### [SNOK](https://www.g2.com/products/snok/reviews)

Industrial cybersecurity. Secure-NOK provides innovative solutions to solve Industrial Cybersecurity needs.

#### Who Is the Company Behind SNOK?

- **Seller:** [SecureNok](https://www.g2.com/sellers/securenok)
- **Year Founded:** 2010
- **HQ Location:** Sandnes, NO
- **Twitter:** @securenok  
71 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=b63a83e4d1c828ed9585f8a856ca8a001eeee08b965f7e3fc98c44a6449e837b&secure%5Burl%5D=http%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fsecurenok-ltd-&secure%5Burl_type%5D=linkedin_company_website)  
17 employees on LinkedIn®

### [suricata](https://www.g2.com/products/suricata/reviews)

Suricata is a free and open source, mature, fast and robust network threat detection engine.

#### Who Is the Company Behind suricata?

- **Seller:** [suricata](https://www.g2.com/sellers/suricata)
- **HQ Location:** N/A
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=7886df2ed926834e5eb248c77dcfa8e5c815d3ab1f0fe3132ced0dba45868834&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2FNo-Linkedin-Presence-Added-Intentionally-By-DataOps&secure%5Burl_type%5D=linkedin_company_website)  
1 employees on LinkedIn®

### [Syspeace](https://www.g2.com/products/syspeace/reviews)

Syspeace is an intrusion detection and prevention system against brute force attacks on Microsoft Windows Servers. Syspeace is an intrusion protection software which most can afford regardless of business size, as well as easy to use regardless of computer experience. Syspeace is made for you, with the safety of every type of business in mind.

#### Who Is the Company Behind Syspeace?

- **Seller:** [Syspeace](https://www.g2.com/sellers/syspeace)
- **Year Founded:** 2012
- **HQ Location:** Stockholm, SE
- **Twitter:** @syspeace  
229 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=453a99e959ec27b5b213a1584277f459a14161c0ac4deeac5905e9fdec5f2214&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fsyspeace%2F%3ForiginalSubdomain%3Dse&secure%5Burl_type%5D=linkedin_company_website)  
1 employees on LinkedIn®

### [Venusense Intrusion Prevention and Management System (IPS)](https://www.g2.com/products/venusense-intrusion-prevention-and-management-system-ips/reviews)

Venusense intrusion prevention system (IPS) can recognize and block attacks and viruses, such as the Web attack, worm, spy software, Trojan, overflow attack, database attack, advanced threat attack, and brute-force, which make up the deficiencies of deep prevention at the network layer.

#### Who Is the Company Behind Venusense Intrusion Prevention and Management System (IPS)?

- **Seller:** [Venustech](https://www.g2.com/sellers/venustech)
- **Year Founded:** 1996
- **HQ Location:** N/A
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=d29e12334f32aea992c526b14c36f5cbae739c8fe5cbaee6fbd6e1d2bae8b160&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F2282290&secure%5Burl_type%5D=linkedin_company_website)  
447 employees on LinkedIn®

### [Zscaler Zero Trust Firewall](https://www.g2.com/products/zscaler-zero-trust-firewall/reviews)

Zscaler Zero Trust Firewall is a cloud-delivered security solution that extends firewall protection to all users, devices, and locations by implementing Zero Trust principles. Unlike traditional firewalls, this solution does not rely on physical appliances or network boundaries—instead, it integrates into the Zscaler Zero Trust Exchange, providing advanced, identity-based traffic filtering and protection for modern cloud and hybrid environments. This globally distributed firewall provides comprehensive Layer 7 inspection, enabling granular control, deep visibility, and real-time threat prevention across all internet and application traffic. By enforcing dynamic policies based on user identity, device posture, location, and context, Zscaler Zero Trust Firewall secures connections while eliminating risks like lateral movement and network exposure. Key Features and Benefits: • Cloud-Delivered Scalability: Provides enterprise-grade firewall protection without the limitations of legacy appliance-based firewalls. • Zero Trust Architecture: Enforces strict user and application segmentation to minimize the attack surface. • Layer 7 Inspection: Offers deep packet inspection to identify and block malicious application and internet traffic. • Integrated Threat Prevention: Leverages advanced security tools like intrusion detection/prevention (IDPS) and sandboxing to block sophisticated threats. • Dynamic Policies: Adapts access permissions and filtering rules based on identity, device posture, and real-time risk assessment. • Simplified Management: Reduces complexity with centralized cloud-based policy enforcement across global deployments. Designed for modern enterprises embracing digital transformation, Zscaler Zero Trust Firewall delivers robust, scalable security that protects users and applications seamlessly, wherever work happens. This solution is trusted by organizations worldwide to ensure safe connectivity while aligning with Zero Trust security strategies."

#### Who Is the Company Behind Zscaler Zero Trust Firewall?

- **Seller:** [Zscaler](https://www.g2.com/sellers/zscaler)
- **Year Founded:** 2008
- **HQ Location:** San Jose, California
- **Twitter:** @zscaler  
17,676 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=dd48cce12739aa38dd0edad4b44a56a4154fceea224130955b1eeadec11322bf&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F234625%2F&secure%5Burl_type%5D=linkedin_company_website)  
8,830 employees on LinkedIn®
- **Ownership:** NASDAQ:ZS

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[Browse Intrusion Detection and Prevention Systems (IDPS) Themes](/categories/intrusion-detection-and-prevention-systems-idps/themes)

 ![Lauren Worth](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Lauren Worth")
LW

Researched and written by [Lauren Worth](https://research.g2.com/insights/author/lauren-worth)

Updated October 3, 2024

Intrusion detection and prevention systems (IDPS) are used to inform IT administrators and security staff of anomalies and attacks on IT infrastructure and applications. These tools detect malware, socially engineered attacks, and other web-based threats. IDPS also provide preemptive intrusion prevention capabilities for internal threats and potentially compromised systems.

Intrusion detection and prevention systems monitor systems for abnormal behavior and potential vulnerabilities that can leave a business susceptible to cyberattacks. Companies choose to adopt these to protect their sensitive business information and ensure their computing infrastructure performs as needed.

Some next-generation [firewall software](https://www.g2.com/categories/firewall) offer intrusion detection and prevention capabilities. But the main functionality of firewall tools will be controlling network access, rather than monitoring network behavior.

To qualify for inclusion in the Intrusion Detection and Prevention Systems (IDPS) category, a product must:

- Monitor IT systems for abnormal behavior and misuse
- Inform administrators of abnormal protocol activity
- Monitor the performance of IT hardware and security components
- Provide blocking mechanisms for web-based threats

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