The latest articles on DEV Community by Boni Yeamin (@boni_yeamin_092daf4456727). https://dev.to/boni_yeamin_092daf4456727 https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F2447039%2F5be54a2c-c1f0-4387-bf4d-30d260860948.jpg https://dev.to/boni_yeamin_092daf4456727 en Boni Yeamin Sun, 15 Mar 2026 04:34:48 +0000 https://dev.to/boni_yeamin_092daf4456727/introducing-zerowall-cli-v110-a-simple-firewall-management-tool-for-linux-4hhm https://dev.to/boni_yeamin_092daf4456727/introducing-zerowall-cli-v110-a-simple-firewall-management-tool-for-linux-4hhm <p>Managing firewall rules from the command line can sometimes feel messy or overly complex. While tools like <code>iptables</code>, <code>firewalld</code>, and <code>ufw</code> are powerful, they can also be intimidating for beginners or slow down quick rule management.</p> <p><a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fyfcig128zi0taqzrihia.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fyfcig128zi0taqzrihia.png" alt=" " width="800" height="450"></a></p> <p>To simplify this workflow, I built <strong>Zerowall CLI</strong> — a lightweight command-line tool designed to make firewall management simple, structured, and easy to use.</p> <p>Today I'm excited to share the <strong>stable release: Zerowall v1.1.0</strong>.</p> <h2> What is Zerowall? </h2> <p><strong>Zerowall</strong> is a CLI tool that helps manage firewall rules and inspect configurations quickly from the terminal.</p> <p>It provides a simplified interface for common firewall operations like:</p> <ul> <li>Allowing ports</li> <li>Blocking IP addresses</li> <li>Inspecting open ports and services</li> <li>Managing firewall zones</li> <li>Reloading firewall rules</li> <li>Making firewall rules persistent</li> </ul> <p>The goal is to provide a <strong>clean developer-friendly CLI interface</strong> for everyday firewall management tasks.</p> <h2> Key Features </h2> <ul> <li>Zone management support</li> <li>Persistent firewall rules</li> <li>Firewall reload support</li> <li>Structured CLI help system</li> <li>Simple allow/block commands</li> <li>Inspection commands for ports, services, and zones</li> </ul> <h2> Example Usage </h2> <p>Allow a port:<br> </p> <div class="highlight js-code-highlight"> <pre class="highlight shell"><code>zerowall allow 22 </code></pre> </div> <p>Block an IP address:<br> </p> <div class="highlight js-code-highlight"> <pre class="highlight shell"><code>zerowall block 192.168.1.100 </code></pre> </div> <p>View firewall configuration:<br> </p> <div class="highlight js-code-highlight"> <pre class="highlight shell"><code>zerowall <span class="nt">--list-all</span> </code></pre> </div> <p>Inspect a specific zone:<br> </p> <div class="highlight js-code-highlight"> <pre class="highlight shell"><code>zerowall <span class="nt">--zone</span> public <span class="nt">--list-all</span> </code></pre> </div> <p>Apply permanent rules:<br> </p> <div class="highlight js-code-highlight"> <pre class="highlight shell"><code>zerowall allow 443 <span class="nt">--permanent</span> </code></pre> </div> <h2> Current Release </h2> <p><strong>Version:</strong> v1.1.0 (Stable)</p> <p>Included improvements:</p> <ul> <li>Standardized CLI help output</li> <li>Improved command structure</li> <li>Zone inspection support</li> <li>Persistent firewall rule support</li> <li>Cleaner CLI output</li> </ul> <h2> Documentation </h2> <p>The project now includes:</p> <ul> <li>Professional README</li> <li>CLI cheatsheet</li> <li>Usage guide</li> <li>Open source contribution guidelines</li> </ul> <h2> Installation </h2> <p>A verified <code>.deb</code> installer is included for easy installation.</p> <p>Example:<br> </p> <div class="highlight js-code-highlight"> <pre class="highlight shell"><code><span class="nb">sudo </span>dpkg <span class="nt">-i</span> zerowall.deb </code></pre> </div> <h2> Open Source Contributions </h2> <p>Zerowall is an open-source project and contributions are welcome.</p> <p>If you:</p> <ul> <li>Find a bug</li> <li>Have a feature suggestion</li> <li>Want to improve documentation</li> <li>Want to contribute code</li> </ul> <p>Feel free to open an <strong>Issue</strong> or submit a <strong>Pull Request</strong>.</p> <h2> GitHub Repository </h2> <p><a href="https://github.com/boniyeamincse/zerowallcli.git" rel="noopener noreferrer">https://github.com/boniyeamincse/zerowallcli.git</a></p> <h2> Final Thoughts </h2> <p>Zerowall started as a small idea to simplify firewall management from the terminal, and it has now grown into a structured open-source CLI tool.</p> <p>I'm excited to keep improving it and welcome feedback from the community.</p> <p>If you're interested in Linux security, CLI tooling, or open-source development, feel free to check it out.</p> <p>Thanks for reading 🙌</p> cli linux security showdev