How to use the ZMap network scanner

<p>ZMap, an open source utility under the Apache 2.0 license, is a unique and powerful high-speed network scanner designed to probe the internet. The app focuses on performance rather than depth. As a result, it conducts simple scans that are typically based on a single <a href=”https://www.techtarget.com/searchnetworking/definition/port-number”>network port</a>.</p>
<p>Let’s examine how to use ZMap, installation options and general functionality, as well as compare ZMap to alternative scanners.</p>
<section class=”section main-article-chapter” data-menu-title=”ZMap use cases”>
<h2 class=”section-title”><i class=”icon” data-icon=”1″></i>ZMap use cases</h2>
<p>ZMap is primarily an information-gathering tool. Various research institutions rely on it to understand deployment patterns, service availability, port and protocol use, vulnerabilities, workflows and other data. These organizations use this information to explain internet utilization and technologies. They also use it to generate additional cybersecurity information.</p>
<p>Consider the following examples:</p>
<ul class=”default-list”>
<li>Academic and research-oriented internet scans.</li>
<li>Vulnerability hunting and threat detection on the internet.</li>
<li>Risk assessments for public-facing internet resources.</li>
<li>Tracking technology adoption and service use on a per-port basis.</li>
</ul>
<h3>The ZMap Project</h3>
<p>ZMap is part of a larger collection of tools called the <a target=”_blank” href=”https://zmap.io/” rel=”noopener”>ZMap Project</a>. The collection enables researchers to gain a deeper understanding of the internet’s structure and functionality. ZMap was the first tool in the collection, but many others have followed, including:</p>
<ul class=”default-list”>
<li><b>ZGrab.</b> An application-layer stateful scanner that offers greater depth and detail than ZMap but with lower performance.</li>
<li><b>ZDNS.</b> A DNS resolver application for rapidly completing lookups and gathering resource record information.</li>
<li><b>ZTee.</b> A tool to buffer and maintain scan data for performance.</li>
<li><b>ZSchema.</b> A high-level database programming language.</li>

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