What is a port scanner?

A port scanner is a tool that checks for open TCP or UDP ports on a server or network device. It helps identify which services are running and potentially accessible, which is useful for both system administration and security assessment.

Is port scanning legal?

Port scanning is legal when performed on systems you own or have explicit permission to scan. However, scanning systems without authorization may violate terms of service or laws in some jurisdictions. Always ensure you have proper authorization before scanning any system.

How can I use port scanning results?

Port scanning results can help you: 1) Identify unnecessary open ports that should be closed for security, 2) Verify that required services are running and accessible, 3) Troubleshoot connectivity issues, and 4) Discover potential security vulnerabilities in your network.

Why might I want to check for open ports?

Checking for open ports helps ensure your systems are properly secured by identifying services that might be unnecessarily exposed to the internet. It's also useful for verifying that services you need are running correctly and accessible through your firewall.

Online Port Scanner Tool | MyIPReveal.com

Scan Network Ports

This tool checks if common TCP ports are open on a target host. It can help identify available services and potential security vulnerabilities.

Scan Results

Port	Service	Status	Description

Security Note: Open ports may be intentional for legitimate services or could potentially expose your system to attacks. If you're not sure why a port is open, you should investigate further.

About Port Scanning

A port scan is a method for determining which network ports on a server or device are open and potentially accepting connections. Port scanning helps identify what services are running on a host and can reveal security vulnerabilities or misconfigurations.

Security Testing

Identify potential security vulnerabilities by discovering which services are exposed to the internet.

Try Example: CloudFlare (cloudflare.com)

Network Inventory

Discover what services are running on a server and verify that only necessary ports are open.

Try Example: Gmail (gmail.com)

Common Ports and Services

Port	Service	Description
21	FTP	File Transfer Protocol - for transferring files
22	SSH	Secure Shell - encrypted remote administration
25	SMTP	Simple Mail Transfer Protocol - for sending email
53	DNS	Domain Name System - translates domain names to IP addresses
80	HTTP	Hypertext Transfer Protocol - for serving web pages
443	HTTPS	HTTP Secure - encrypted web traffic
3306	MySQL	MySQL database server
3389	RDP	Remote Desktop Protocol - for remote desktop access

Important Security Information

This port scanner is provided for educational and legitimate security testing purposes only. You should only scan:

Systems you own or have permission to scan
Your own servers or network devices
Hosts you're authorized to test

Unauthorized port scanning may be against the terms of service of many organizations and could potentially be illegal in some jurisdictions.