No Man's Land
Intrusion Prevention System What It Does for Your Network
Hold the Line at the Border
An intrusion prevention system (IPS) is a network security tool that inspects traffic as it passes and blocks attacks in real time. Endpoint Detectives offers IPS as an add-on to managed detection and response (MDR), quoted for your network.
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What Is an Intrusion Prevention System?
An intrusion prevention system is a security control placed in the path of network traffic that detects malicious activity and blocks it automatically. Many modern firewalls include IPS features.
Blocking at the edge matters because attackers aim there. The Verizon 2026 Data Breach Investigations Report ranked exploitation of vulnerabilities as the top initial access vector, at 31% of breaches.
How Does an IPS Stop Attacks?
An IPS stops attacks by inspecting each packet or session against known attack patterns and expected behavior, then dropping or resetting anything that matches.
01
Inspect
Traffic passes through the IPS, which reads headers and content.
02
Match
Signatures catch known exploits. Anomaly rules catch odd behavior.
03
Block
Matching traffic is dropped, the session reset or the source blocked.
04
Log
Every block is logged for review in a Security Information and Event Management (SIEM).
IPS vs IDS: What Is the Difference?
An IPS blocks attacks, while an intrusion detection system (IDS) only detects and alerts. An IDS watches a copy of traffic. An IPS sits inline and acts.
| IDS | IPS | |
|---|---|---|
| Placement | Watches a copy | Inline |
| Action | Alerts | Blocks |
| Risk | Stops nothing on its own | Can block good traffic if tuned badly |
| Needs review | Yes | Yes |
Neither tool replaces endpoint protection. The CrowdStrike 2026 Global Threat Report found 82% of detections were malware-free, which signature rules at the border can miss.
Where Does an IPS Fit in Your Security?
An IPS fits at the network perimeter as one layer. Endpoint detection and response watches each device, network monitoring watches movement inside, and a Security Operations Center (SOC) reviews it all.
Endpoint Detectives MDR includes network monitoring, endpoint and cloud monitoring, SIEM log aggregation and a 24/7 SOC. IPS is not part of the $150 bundle, but it is available as an add-on, quoted for your network. Tap Get Protected or call (866) 804-0645.
Layers that work together
- Firewall and IPS at the perimeter
- EDR on every workstation
- Network and cloud monitoring
- SIEM log aggregation
- 24/7 SOC and remote response
Hold the Border, Then Watch Inside It
Add IPS to 24/7 MDR. We quote it for your network.
Intrusion Prevention System: FAQ
Does a firewall include an IPS?
Many next-generation firewalls include IPS features. Check whether yours is licensed and turned on, because the feature is often sold separately.
Can an IPS stop ransomware?
An IPS can block some exploit attempts that lead to ransomware, but it cannot see attacks using stolen logins. See how managed detection and response covers stolen logins.
Is an IPS included in Endpoint Detectives MDR?
IPS is not one of the eight inclusions in the $150 bundle, but we offer it as an add-on. Tap Get Protected or call (866) 804-0645 for a quote.
Who should review IPS alerts?
Someone trained to tell real attacks from noise, ideally a SOC that can also see endpoint and cloud activity.
Cover No Man's Land
Add IPS to 24/7 MDR, quoted for your network.
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Last updated: October 28, 2026