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Advanced Open Port Scanner – 100% Free

Free Port Scanner Tool

Experience Fast, Reliable, and Comprehensive Port Scanning

The Port Scanner powered by Lansweeper scans and identifies all active IP addresses, associated devices, detailed device information, and open ports without the need for any credentials. Take control of your network with advanced port scanning – included in our powerful free IP Scanner.

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100% free

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No credentials needed

Port Scanning

Detect Open Ports & Identify Risks

Our Port Scanner uses advanced techniques to probe the specified range of IP addresses for open ports. Identifying open ports is crucial for network security, because it helps uncover potential vulnerabilities that could be exploited by malicious actors. By scanning for open RDP ports, you can take proactive measures to secure your network, such as closing unnecessary ports and fortifying your defenses against unauthorized access.

Key Features

Understand Network Configurations

Port checkers can help provide insights into how your devices are configured and help you understand whether your network and ports are using appropriate settings.

Detailed Device Information

Our scanner doesn’t just list IP addresses; it provides in-depth details about each device on your network, including MAC address, manufacturer, device type, Operating System, OS version, model, and more.

Check Port Statuses

Our Port Scanner tool is optimized for speed, ensuring quick scans that don’t compromise on detail. Whether you’re scanning a small home network or a large corporate environment, our scanner delivers accurate and timely results every time.

Ensure Network Security

Visibility into your network’s organization and usage can help you assess the risks posed by open ports and better protect your infrastructure.

Need more advanced features?

Save time and reduce risk with the all-in-one solution for discovering, managing, and optimizing your technology assets. Start your 14-day free trial today to unlock advanced features and take full control of your network.

Free IP Scanner Lansweeper Platform

Agentless IP Discovery

Discover every device in your IT estate with our best-in-class scanning engine.

Device Information

Inspect detailed hardware, software, user, and config data for any device at a moment’s notice.

Provides basic device info (IP, MAC address, manufacturer, etc.)

Detailed device profiles including hardware, software, and user data.

Passive Scanning

Leverage credential-free device recognition to accurately detect and recognize all connected devices.

Asset Inventory Management

Find your asset data unified and accessible from a single inventory.

Vulnerability Insights

Leverage information on vulnerabilities from the NIST catalog connected to your software and assets found by Lansweeper.

Lifecycle Insights

Find which of your software and assets are or will reach end of life.

Topology Diagrams

Discover relations between your assets with dynamically generated diagrams on top of your inventory.

Dashboards

Consult top-down dashboards to supervise your technology estate and drill down into the details when needed.

Report Builder & Library

Ask any question about your technology estate and find the answer through an intuitive report builder. Leverage a large array of built-in reports and dashboards to find the answers you didn’t know you were looking for.

API Integrations & Data Export

Integrate Lansweeper with your other tools and systems through certified plug-and-play integrations. Export data and insights to excel, csv, pdf, and many other file formats.

Cost

100% free

Plans & Pricing

Free IP Scanner Lansweeper Platform

Agentless IP Discovery

Discover every device in your IT estate with our best-in-class scanning engine.

Device Information

Inspect detailed hardware, software, user, and config data for any device at a moment’s notice.

Provides basic device info (IP, MAC address, manufacturer, etc.)

Detailed device profiles including hardware, software, and user data.

Passive Scanning

Leverage credential-free device recognition to accurately detect and recognize all connected devices.

Asset Inventory Management

Find your asset data unified and accessible from a single inventory.

Vulnerability Insights

Leverage information on vulnerabilities from the NIST catalog connected to your software and assets found by Lansweeper.

Lifecycle Insights

Find which of your software and assets are or will reach end of life.

Topology Diagrams

Discover relations between your assets with dynamically generated diagrams on top of your inventory.

Dashboards

Consult top-down dashboards to supervise your technology estate and drill down into the details when needed.

Report Builder & Library

Ask any question about your technology estate and find the answer through an intuitive report builder. Leverage a large array of built-in reports and dashboards to find the answers you didn’t know you were looking for.

API Integrations & Data Export

Integrate Lansweeper with your other tools and systems through certified plug-and-play integrations. Export data and insights to excel, csv, pdf, and many other file formats.

Cost

100% free

Plans & Pricing

Download now, for free

Experience the benefits of fast, reliable, and comprehensive port scanning today!

Whether you’re managing a home network or an enterprise infrastructure, our port scanner provides the critical insights you need to ensure your network is secure, efficient, and well-organized.

  • Instantly discover all devices connected to your network.
  • Quickly detect open ports.
  • Identify unauthorized devices and potential security threats.
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No credentials needed

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100% Free

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Lightweight executable

  • What is port scanning? +

    Port scanning is a method for identifying open ports on a network. By scanning for open ports, you can identify potential vulnerabilities and prevent unauthorized access to critical resources.

  • What is an open port? +

    An open port is a network port that is currently accepting incoming connections. Network services use ports to communicate with devices and applications. Open ports can be used for legitimate purposes, such as web servers or email servers, but they can also be potential entry points for unauthorized access if not properly secured.

  • What is an open port scanning tool? +

    An open port scanning tool is a software application that scans a network to identify open ports. These tools help network administrators and security professionals assess the security of their network by identifying which ports are open and what services are running on them. Open port scanners can help detect vulnerabilities and ensure that unnecessary ports are closed to prevent unauthorized access.

  • What are the benefits of open port scanning? +

    Open port scanning offers several benefits for network security and management:

    • Improved Security
      Identifies open ports that attackers could exploit, allowing you to secure or close them.
    • Network Management
      Helps in managing network resources by identifying active services and ensuring they are running on the correct ports.
    • Vulnerability Detection
      Assists in detecting vulnerable services that need patching or securing.
    • Compliance
      Helps meet security compliance requirements by regularly monitoring and securing open ports.
    • Performance Optimization
      Identifies unnecessary services that can be disabled to improve network performance.
  • How can cybercriminals use port scanning as an attack method? +

    Cybercriminals use port scanning during the reconnaissance stage of a cyberattack. A port scan provides valuable information about a target environment to identify vulnerabilities in a network. Here are several ways they can leverage port scanning:

    • Network Mapping
      By scanning a network, attackers can create a map of the network’s devices and open ports, revealing potential targets for exploitation.
    • Vulnerability Identification
      Open ports can indicate specific services running on a network, some of which may have known vulnerabilities. Attackers use port scans to identify and target these services with specific exploits.
    • Service Enumeration
      After identifying open ports, attackers can gather more detailed information about the services running on them, including their versions. This information can help them find and exploit weaknesses.
    • Brute Force Attacks
      Once attackers know which services are running, they can attempt brute force attacks on services like SSH or FTP by trying multiple username and password combinations.
    • Evasion of Detection
      Sophisticated attackers use stealthy scanning techniques, such as slow scans over an extended period or randomized scanning patterns, to avoid detection by security systems.