Join or Sign In

Sign in to add and modify your software

Sign in with Facebook Sign in with email

By joining Download.com, you agree to our Terms of Use and acknowledge the data practices in our Privacy Agreement.

Free Port Scanner

By Nsasoft Free Editors' Rating

Editors' Review

Download.com Staff Jun 24, 2012

Hackers are like unruly sailors on liberty when it comes to open ports: You can't keep them out, and they leave disaster in their wake. Protecting your ports is essential to keeping your system safe, and that starts with knowledge of your system's ports and whether they're Wide Open or Closed for the Duration. Free Port Scanner is just the tool for the job. This simple freeware from Network Security Audit Software (Nsasoft) thoroughly scans and tests your system's ports. It can reveal vulnerable access points so you can take action to close them to attackers.

Free Port Scanner is a simple tool with a simple interface: just Scan and Stop buttons and fields for displaying IP address and specifying TCP ports. A checkbox marked Show Closed Ports is selected by default. Unchecking it shows only open ports, a handy option for focusing on problems. We pressed Scan, and a blue progress bar began tracking the job. But Free Port Scanner doesn't just quickly ID your ports; it probes each of them thoroughly and persistently for weaknesses, and it doesn't list results in the main window until it's satisfied the port is closed or open. The scan took several minutes to complete, displaying IP Address, Port Number, Description, Port Name, and Port Status. As we expected, all our ports showed Closed under Port Status, but it's still nice to be reminded of it. If one or more of your system's ports is open, look to your system security and software. Then run Free Port Scanner again, and again if necessary; as many times as it takes to verify your system's safety.

If hackers are like the proverbial drunken sailor when it comes to open ports, good network security tools are the Shore Patrol, preventing trouble by the most effective measure, closing the port. Free Port Scanner won't secure your system; it's the early warning you need to do the job yourself, based on your hardware, software, and security tools. Highly recommended for all users.

Full Specifications

What's new in version 3.6.3

Version 3.6.3 may include unspecified updates, enhancements, or bug fixes.

General

Release April 22, 2020
Date Added April 22, 2020
Version 3.6.3

Operating Systems

Operating Systems Windows 10, Windows 2003, Windows 8, Windows Vista, Windows, Windows Server 2008, Windows 7, Windows XP
Additional Requirements None

Popularity

Total Downloads 11,490
Downloads Last Week 7
Report Software

Related Software

MiniTool Partition Wizard Free Edition

Free
MiniTool Partition Wizard Free Edition

HWMonitor

Free
HWMonitor

Belarc Advisor

Free
Belarc Advisor

SpeedFan

Free
SpeedFan

Best VPN Services for 2021

Best for privacy

3 months free with 1-year plan

Best for customer support

$39.99 for the first 12 months

Best for zero logs

$4.87.99/months for a 1-year plan

Best money-back guarantee

$2.99/months for a 3-year plan

User Reviews

2.3/5
3 User Votes
5 Star
4 Star
3 Star
2 Star
1 Star

Developer's Description

Free Port Scanner is an easy to use and smart TCP port scanner for the Win32 platform. You can scan ports and can perform scan on predefined port ranges. This tool uses TCP packets to determine available hosts and open ports, service associated with port and other characteristics.