No. 19of 38 ·Intrusion Detection and Prevention Software

Zyxel Intrusion Prevention System

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Freedom report

One barScore 5.3

DocumentedPlans, terms and facts published

Zyxel Intrusion Prevention System is ranked #19 of 38 in intrusion detection and prevention software on Freedom251.

Compared on intrusion detection and prevention software

Deployment model: appliance
Network scope: network
Inline blocking: Yes
Encrypted traffic inspection: Yes
Supported platforms: network

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The record

Purpose: Zyxel IPS, also known as Intrusion Detection and Prevention (IDP), is a network security service intended to help businesses defend against attacks exploiting system or application vulnerabilities.
Threat detection: The service detects anomalous traffic including SQL injection, denial-of-service attacks, and malicious backdoor applications.
Inspection: Its deep packet inspection engine examines incoming and outgoing traffic, including SSL traffic, for attack signals, protocol deviations, and policy violations.
Operating modes: IPS operates in detection and prevention modes to defend operating systems and enterprise applications.
Virtual patching: Zyxel says virtual patching shields vulnerabilities before exploitation and can reduce emergency patching, frequent patch cycles, and downtime.
SSL inspection: SSL inspection scans URL content accessed over SSL to apply policies and detect malware and viruses.
Signature updates: Subscribed appliances receive weekly signature updates, and the service supports importing customized signatures.
Threat analysis: The service supports Layer 7 context-aware and behavior analysis and identifies threats including malware, ransomware, Trojans, backdoor applications, and DoS attacks.
Subscription scope: One IPS subscription provides network-wide protection for users configured behind a firewall.
Compatible appliances: The IPS feature is supported by most Zyxel security firewalls; the compatible appliances page lists ATP, USG FLEX, USG, Zywall, and VPN models.
License purchasing: Zyxel says customers can buy and renew licenses through Zyxel Circle and Marketplace, with automatic license activation after purchase.
Support: Zyxel provides a community, download library, security advisories, and a support center for its products and solutions.
Audience: Zyxel describes its security services as options for businesses of all sizes and verticals.
Traffic inspection: Its deep packet inspection engine examines incoming and outgoing traffic, including SSL traffic, for attack content, protocol deviations, and policy violations.

Where it ranks on Freedom251

Best Intrusion Detection and Prevention Software in 2026#19 of 38

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Sources

zyxel.com/us/en-us/products/security/network-secu· checked 11 Oct 2026
zyxel.com/us/en-us/products/security/network-secu· checked 11 Oct 2026
zyxel.com/us/en-us/company/about-zyxel· checked 11 Oct 2026