Server Port Scanner

Scan 21 common server ports and check their status with security analysis!

What is a Port Scanner?

A port scanner is a security tool that probes a server or network to identify open ports and services. Ports are virtual endpoints used by applications to communicate over a network. Each port number (0-65535) can host different services like web servers (80, 443), email (25, 587), databases (3306, 5432), or remote access (22, 3389).

Our Server Port Scanner checks 21 common ports used by web servers, email systems, databases, and remote access tools. It identifies open, closed, and filtered ports while providing security risk assessments to help protect your infrastructure.

Common Ports and Services

PortServiceCategoryRisk Level
80HTTPWebLow
443HTTPSWebLow
22SSHRemote AccessLow
21FTPFile TransferMedium
25SMTPEmailMedium
3306MySQLDatabaseHigh
5432PostgreSQLDatabaseHigh
27017MongoDBDatabaseHigh

Port Status Meanings

🟢 Open Port

Service is running and accepting connections. Accessible from the internet.

🔴 Closed Port

No service running on this port. Connections are refused immediately.

🟡 Filtered Port

Firewall or router is blocking access. Port state cannot be determined.

Why Scan Server Ports?

🔒 Security Auditing

Identify unauthorized services and close security vulnerabilities.

🛡️ Attack Prevention

Reduce attack surface by closing unnecessary open ports.

📊 Network Inventory

Document all services running on your infrastructure.

🔍 Troubleshooting

Verify if services are accessible and responding correctly.

✅ Compliance

Meet security standards requiring regular port scans.

🚨 Intrusion Detection

Detect unexpected services indicating compromised systems.

Related Network Tools

🌐 DNS Records Checker

Check all DNS record types.

🌍 DNS Propagation Checker

Check DNS across global locations.

📊 DNS Report Checker

DNS health analysis with scores.

🔍 HTTP Status Checker

Check HTTP response codes.

📚 Frequently Asked Questions

Q: Is port scanning legal?

A: Port scanning your own servers is legal and recommended for security. Scanning others' servers without permission may violate laws and terms of service. Only scan systems you own or have explicit authorization to test.

Q: Which ports should I keep open?

A: Keep only essential ports open: 80/443 for websites, 22 for SSH (restricted IPs), 25/587 for email. Close all database ports (3306, 5432, 27017, 6379) to public access and use SSH tunnels or VPNs instead.

Q: What are high-risk ports?

A: Database ports (MySQL 3306, PostgreSQL 5432, MongoDB 27017, Redis 6379), remote desktop (RDP 3389, VNC 5900), and Telnet (23) are high-risk. These should never be publicly accessible.

Q: How can I close open ports?

A: Stop the service running on the port, configure firewall rules (iptables, ufw, Windows Firewall), or use cloud security groups (AWS, Azure, GCP) to block unwanted traffic.

Q: What if database ports are open?

A: Immediately close them! Configure your database to bind to localhost (127.0.0.1) only, use firewall rules to block external access, and access databases via SSH tunnels or private networks.

Q: Is this port scanner free?

A: Yes! Completely free with unlimited scans. Check 21 common ports with security risk analysis and export results. Perfect for security audits and server monitoring.

🔍 Scan Your Server Ports Now!

Use our free Server Port Scanner to check 21 common ports including HTTP, HTTPS, SSH, FTP, MySQL, PostgreSQL, MongoDB, and more. Get security risk analysis and recommendations.

More tools: DNS RecordsDNS PropagationHTTP Status 🎯

About This Tool

Our Server Port Scanner is a powerful, free online tool designed to help you scan and identify open ports on servers. This professional-grade tool provides accurate results instantly, making it an essential resource for web developers, SEO professionals, digital marketers, and content creators. Whether you are working on a small personal project or managing enterprise-level campaigns, our tool delivers the reliability and precision you need.

The Server Port Scanner streamlines your workflow by automating complex tasks that would otherwise require manual effort or expensive software. With a user-friendly interface and instant results, you can complete your work faster and more efficiently. Our tool is completely web-based, meaning you do not need to install any software or plugins - simply open your browser and start using it immediately.

Using a dedicated Server Port Scanner offers numerous advantages over manual methods or generic solutions. First and foremost, it saves you valuable time by processing information quickly and accurately. Second, it eliminates human error that can occur when performing these tasks manually. Third, it provides consistent, standardized results that you can rely on for professional work.

Professional users choose our Server Port Scanner because it combines power with simplicity. You do not need technical expertise to use it effectively - the intuitive interface guides you through each step. At the same time, the tool offers advanced capabilities that satisfy the needs of experienced professionals who require precision and flexibility in their work.

Our Server Port Scanner includes features specifically designed for modern web workflows. The tool processes your requests instantly, providing results in real-time without delays. It handles both small-scale and large-scale operations efficiently, scaling to meet your specific needs. The clean, organized output format makes it easy to understand and use the results immediately.

Security and privacy are paramount in our design. Your data is processed locally in your browser whenever possible, ensuring that sensitive information never leaves your device. For tools that require server processing, we use encrypted connections and never store your data permanently. You can use our tools with confidence, knowing that your information remains private and secure.

The Server Port Scanner serves multiple important use cases across different industries and professions. Security professionals use it to audit server security. Network administrators use it to verify firewall rules. Developers use it to test service availability. IT auditors use it for compliance checking. Each of these applications benefits from the speed, accuracy, and convenience that our tool provides.

Web developers use this tool daily to streamline their development workflows and ensure code quality. SEO professionals rely on it for optimization tasks that improve search engine rankings. Content marketers leverage it to enhance their content strategy and measure performance. Digital agencies use it to deliver better results for their clients more efficiently.

To get the most value from our Server Port Scanner, follow these best practices. First, ensure you provide clean, well-formatted input data - while the tool can handle various formats, clean input produces the best results. Second, review the output carefully and understand what each metric or result means for your specific use case.

For optimal results, integrate this tool into your regular workflow rather than using it as an occasional resource. Consistent use helps you become more familiar with its capabilities and identify patterns in your data. Many professionals bookmark this page and use it multiple times daily as part of their standard operating procedures.

Consider combining this Server Port Scanner with other tools in our suite for comprehensive analysis and optimization. Our tools are designed to work together, allowing you to build a complete workflow that addresses all aspects of your project. For example, you might use multiple tools in sequence to analyze, optimize, and validate your work.

The Server Port Scanner is built using modern web technologies that ensure fast performance and broad browser compatibility. It works seamlessly across all major browsers including Chrome, Firefox, Safari, and Edge. The responsive design adapts to any screen size, allowing you to use the tool effectively on desktop computers, laptops, tablets, and smartphones.

We regularly update and improve the tool based on user feedback and evolving industry standards. Our development team monitors tool performance continuously and implements optimizations to maintain fast processing speeds. Updates are deployed automatically, so you always have access to the latest features and improvements without needing to download or install anything.

Compared to alternative solutions, our Server Port Scanner offers distinct advantages. Unlike software-based tools that require installation and updates, our web-based tool is always accessible and up-to-date. Unlike limited free tools that impose restrictions, our tool provides professional-grade capabilities without artificial limitations or usage caps.

Many similar tools require account creation or subscription fees. We believe in providing value freely and openly, which is why our Server Port Scanner is available to everyone without registration or payment. You can bookmark this page and return anytime you need the tool without worrying about subscriptions expiring or accounts being locked.

If you encounter any issues or have questions about using the Server Port Scanner, our support resources are here to help. The tool includes built-in help text and examples that guide you through the process. For more complex questions, you can refer to our comprehensive documentation or contact our support team who are happy to assist you.

We welcome feedback and suggestions for improving the Server Port Scanner. If you have ideas for new features or encounter bugs, please let us know so we can continue enhancing the tool. Your input directly influences our development priorities and helps us create tools that better serve the community.

The Server Port Scanner represents our commitment to providing high-quality, accessible tools for web professionals and enthusiasts. Whether you use it occasionally or rely on it daily, we hope it makes your work easier, faster, and more effective. Thank you for choosing our tool, and we look forward to supporting your continued success.