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Port Scanner Tool

Port Scanner

Identify open services and audit your firewall configuration for security holes.

Network Security Audit
Port Security

Unnecessary open ports are entry points for attacks. Common practice is "Deny All" except for essential traffic.

Standard Port Scan

Enter an IP/Domain and the ports you wish to scan (separated by commas).

Are You Leaving the Doors to Your Network Open?

Think of an IP address as an office building, and network ports as the doors and windows. While some doors need to be open for public access (like your website), leaving private doors open is a massive security risk. Our external port scanner simulates how a hacker sees your network from the outside, allowing you to audit your firewall and lock down exposed services before they can be exploited.

Find Accidental Exposures

It is incredibly common for businesses to accidentally expose sensitive hardware to the global internet. Plugging in a new security camera, a Network Attached Storage (NAS) drive, or configuring a new broadband router can inadvertently open ports via UPnP (Universal Plug and Play). A quick scan using our Common Ports preset instantly flags these dangerous external exposures.

Firewall Security Audit

Secure Remote Access (RDP & SSH)

Automated hacker bots scour the internet 24/7 looking for servers with Port 3389 (Windows Remote Desktop) or Port 22 (SSH) left wide open. Once found, they will launch relentless brute-force password attacks against your machines. If our scanner detects these ports are open to the public, you should immediately update your firewall to restrict access via a VPN or a strict IP whitelist.

Network Vulnerability Scanning

Why Use Our Port Scanner?

True External Audit

Because our tool scans from our external web servers, it gives you a 100% accurate picture of what your network looks like to the outside world, bypassing misleading local network rules.

One-Click Presets

Not sure which ports to check? Use our quick presets to instantly test for standard Web hosting traffic, Mail server routing, or the most commonly exploited remote access ports.

100% Private Scanning

We do not store your IP addresses or log your scan results. Your network topology and security audits remain strictly confidential and anonymous.

Found Vulnerable Ports on Your Network?

Leaving critical ports open is a major security risk. Our IT security engineers can help you configure your business router, set up secure VPNs, and implement IP-restricted firewall rules.

Secure My Network Now