Deception is moving at machine speed. Learn to keep pace.
Portal LoginSupportBlogContact
Search
Portal LoginSupportBlogContact
Search
Get a Demo
Start for Free
HomeCybersecurity 101
IPS

What is an Intrusion Prevention System (IPS)?

Written by: Monica Burgess

Published: 09/26/25

woman at laptop
ChatGPT logoChatGPTOpens in new tabClaude logoClaudeOpens in new tabPerplexity logoPerplexityOpens in new tabGoogle Gemini logoGoogle AIOpens in new tab
On This Page

An Intrusion Prevention System (IPS) is a security solution that detects and blocks cyber threats before they can access your network. Unlike an Intrusion Detection System (IDS), which only alerts you about suspicious activity, an IPS takes it a step further by actively stopping it.

How does an IPS work?

Imagine a virtual security guard standing at the entrance of your network. When data tries to pass through, the IPS inspects it for signs of malicious behavior. If something doesn’t check out, the system instantly blocks or redirects it, keeping your network safe from harm.

An IPS uses two primary techniques to detect threats:

  • Signature-based Detection looks for patterns matching known attack methods.

  • Anomaly-based Detection monitors traffic behaviors, flagging anything out of the ordinary as a potential threat.

Combined, these approaches allow the IPS to catch a wide range of attacks—from viruses to complex exploit attempts.

Types of intrusion prevention systems

IPS solutions are generally categorized based on the environments they protect:

  • Network-based IPS (NIPS): Guards the broader network by monitoring its traffic.

  • Host-based IPS (HIPS): Protects individual devices like servers or workstations.

  • Cloud-based IPS: Focused on securing cloud environments and virtual infrastructures.

Each serves a unique role, and many organizations use a mix to cover all security needs.

Why is an IPS crucial for cybersecurity?

An IPS strengthens your cybersecurity defenses by stopping threats before they cause damage. Here’s what it brings to the table:

  • Proactive threat blocking: Stops malicious activity in real time, protecting sensitive data and systems.

  • Reduced downtime: Prevents attacks that could disrupt services or operations.

  • Enhanced network hygiene: Helps ensure only safe, legitimate traffic flows through your network.

By proactively securing your network, an IPS saves time, minimizes risks, and ensures smooth business operations.

Tips for implementing an IPS

Here’s how to get the most out of an IPS:

  • Regularly update signatures and detection rules to keep up with evolving threats.

  • Combine it with additional security layers like firewalls and endpoint protection for maximum coverage.

  • Monitor logs and alerts proactively to fine-tune threat detection and minimize false positives.

  • Conduct periodic penetration tests to assess and improve your IPS’s performance.

By aligning your IPS with broader security strategies, you can better protect your organization from cyberattacks.

ChatGPT logoChatGPTOpens in new tabClaude logoClaudeOpens in new tabPerplexity logoPerplexityOpens in new tabGoogle Gemini logoGoogle AIOpens in new tab
On This Page

FAQs

An IDS alerts you about suspicious activity, while an IPS actively blocks or stops it. They’re complementary tools, often used together in cybersecurity setups.

Not entirely. While an IPS is powerful, combining it with other solutions like firewalls and endpoint protection adds extra layers of security.

Yes! Small businesses are frequent targets of hackers. An IPS offers essential, automated protection to block threats and keep systems secure.

Focus on compatibility with your network, effectiveness in detecting threats, and ease of management. Advanced features like real-time updates and analytics are also key.

Additional Resources

Read more about What is Fileless Malware? Detection & Prevention Guide
What is Fileless Malware? Detection & Prevention Guide
Cybersecurity 101

What is Fileless Malware? Detection & Prevention Guide

Learn how fileless malware works, why it's so effective, and essential strategies to detect and prevent these memory-based cyberattacks.

Read more about Amazon Web Services
Amazon Web Services
Cybersecurity 101

Amazon Web Services

Learn AWS cloud security fundamentals, shared responsibility model, key features like encryption & IAM, plus best practices for cybersecurity professionals.

Read more about What Is Cybersecurity Transformation?
What Is Cybersecurity Transformation?
Cybersecurity 101

What Is Cybersecurity Transformation?

Learn what cybersecurity transformation means, why it's essential for modern organizations, and how to implement a comprehensive security strategy.

Protect What Matters

Secure endpoints, email, and employees with the power of our 24/7 SOC. Try Huntress for free and deploy in minutes to start fighting threats.
Try Huntress for Free