How to Check Open Ports Using Powershell?

Best Tools to Buy to Check Open Ports Using PowerShell in October 2025

1

InstallerParts Professional Network Tool Kit 15 In 1 - RJ45 Crimper Tool Cat 5 Cat6 Cable Tester, Gauge Wire Stripper Cutting Twisting Tool, Ethernet Punch Down Tool, Screwdriver, Knife

• DURABLE LIGHTWEIGHT CASE: SECURE TOOLS IN A PORTABLE HARD CASE FOR EASY ACCESS.

• ERGONOMIC CRIMPER DESIGN: PERFECTLY CRIMP, STRIP, AND CUT VARIOUS CABLE TYPES SAFELY.

• ESSENTIAL TESTING TOOL: QUICKLY TESTS LAN CONNECTIONS FOR EFFICIENT INSTALLATIONS.

BUY & SAVE

$81.99 $99.99

Save 18%

2

Gaobige Network Tool Kit for Cat5 Cat5e Cat6, 11 in 1 Portable Ethernet Cable Crimper Kit with a Ethernet Crimping Tool, 8p8c 6p6c Connectors rj45 rj11 Cat5 Cat6 Cable Tester, 110 Punch Down Tool

• ALL-IN-ONE TOOL KIT: 11 ESSENTIAL NETWORK TOOLS FOR EVERY JOB.
• TIME-SAVING CRIMPER: EFFICIENT 3-IN-1 TOOL FOR QUICK CABLE SETUPS.
• VERSATILE CABLE TESTER: TESTS VARIOUS CABLES WITH MULTIPLE LED INDICATORS.

BUY & SAVE

$26.99

3

Klein Tools VDV226-110 Ratcheting Modular Data Cable Crimper / Wire Stripper / Wire Cutter for RJ11/RJ12 Standard, RJ45 Pass-Thru Connectors

• STREAMLINED PASS-THRU INSTALLATION SAVES TIME AND BOOSTS PRODUCTIVITY.
• ALL-IN-ONE TOOL: STRIP, CRIMP, AND CUT FOR VERSATILE CABLE HANDLING.
• FULL-CYCLE RATCHET ENSURES SECURE CONNECTIONS WITH EVERY CRIMP.

BUY & SAVE

$45.50 $49.97

Save 9%

4

KLEIN TOOLS VDV501-851 Cable Tester Kit with Scout Pro 3 for Ethernet / Data, Coax / Video and Phone Cables, 5 Locator Remotes

• TEST RJ11, RJ45, AND COAX CABLES FOR VERSATILE FAULT DETECTION.
• MEASURE CABLE LENGTHS UP TO 2000 FT FOR PRECISE INSTALLATIONS.
• BACKLIT LCD DISPLAY ENSURES EASY READING IN ANY LIGHTING CONDITION.

BUY & SAVE

$89.70 $99.98

Save 10%

5

Network Cable Untwist Tool, Engineer Wire Straightener for CAT5/CAT5e/CAT6/CAT7 Wires Pair Separator Tools Quickly & Easily Untwists (3)

• QUICKLY UNTWIST CAT5/CAT6 PAIRS-SAVE TIME ON LARGE JOBS!
• PORTABLE TOOL DESIGN; SIMPLE USE AND EASY TO CARRY ANYWHERE!
• ERGONOMIC GRIP REDUCES FINGER PRESSURE AND PREVENTS DAMAGE!

BUY & SAVE

$4.23

6

Network Tool Kit, ZOERAX 11 in 1 Professional RJ45 Crimp Tool Kit - Pass Through Crimper, RJ45 Tester, 110/88 Punch Down Tool, Stripper, Cutter, Cat6 Pass Through Connectors and Boots

• PORTABLE & DURABLE DESIGN: PERFECT FOR HOME, OFFICE, OR OUTDOOR USE.

• VERSATILE CRIMPER: CRIMPS, STRIPS, AND CUTS VARIOUS DATA CABLES EASILY.

• COMPLETE TOOL SET: ALL ESSENTIAL TOOLS AND ACCESSORIES IN ONE ORGANIZED CASE.

BUY & SAVE

$55.99

7

Solsop Pass Through RJ45 Crimp Tool Kit All-in-One Ethernet Crimper Cat7 Cat6 Cat5 Crimping Tool with Network Cable Tester, 50-Pack Cat6 RJ45 Pass Through Connector, 50-Pack Connector Boots

• VERSATILE CRIMPING: CRIMPS CAT5-CAT7 CABLES & RJ11/RJ12 CONNECTORS EASILY.

• ENHANCED TESTING: NEW CABLE TESTER TESTS UP TO 300M FOR RELIABLE RESULTS.

• ERGONOMIC DESIGN: COMPACT WITH A NON-SLIP GRIP FOR HASSLE-FREE OPERATION.

BUY & SAVE

$34.59

8

Hi-Spec 9pc Network Cable Tester Tool Kit Set for CAT5, CAT6, RJ11, RJ45. Ethernet LAN Crimper, Punchdown, Coax Stripper & More

• ALL-IN-ONE TESTING KIT: TEST MULTIPLE CABLE TYPES UP TO 300M EASILY!
• DURABLE CRIMPER: SECURELY CRIMP AND STRIP WIRES WITH ERGONOMIC DESIGN.
• PORTABLE PRO CASE: KEEP TOOLS ORGANIZED AND ACCESSIBLE ON THE GO!

BUY & SAVE

$36.99

+

ONE MORE?

To check open ports using PowerShell, you can use the Test-NetConnection cmdlet. This cmdlet allows you to test a connection to a specific port on a remote computer.

To check if a port is open on a specific remote computer, you can use the following command:

Test-NetConnection -ComputerName REMOTE_COMPUTER -Port PORT_NUMBER

Replace REMOTE_COMPUTER with the name or IP address of the remote computer and PORT_NUMBER with the port number you want to check.

If the port is open, you will see a TcpTestSucceeded result indicating that the connection was successful. If the port is closed, you will see a TcpTestFailed result.

You can also use the -CommonTCPPort parameter with the Test-NetConnection cmdlet to check multiple common ports at once:

Test-NetConnection -ComputerName REMOTE_COMPUTER -CommonTCPPort HTTP, HTTPS, RDP

This will check if ports 80 (HTTP), 443 (HTTPS), and 3389 (RDP) are open on the remote computer.

By using these commands, you can easily check which ports are open on a remote computer using PowerShell.

How to test if a port is open using Powershell?

You can test if a port is open using PowerShell by using the Test-NetConnection cmdlet. Here's an example of how you can use the Test-NetConnection cmdlet to test if port 80 is open:

Test-NetConnection -ComputerName example.com -Port 80

Replace "example.com" with the hostname or IP address of the computer you want to test, and replace "80" with the port you want to test. This cmdlet will return information about the connection to that port, including whether it was successful or not.

You can also use the Test-NetConnection cmdlet with the -CommonTCPPort parameter to test if a common port is open. For example, to test if port 80 is open on a specific computer:

Test-NetConnection -ComputerName example.com -CommonTCPPort HTTP

This will return information about the connection to the specified common TCP port.

Alternatively, you can use the Test-NetConnection cmdlet with the -Port parameter to test if a specific port is open on a computer:

Test-NetConnection -ComputerName example.com -Port 80

This will test if port 80 is open on the specified computer and will return information about the connection.

These are some ways you can use PowerShell to test if a port is open on a remote computer.

What is the potential security risk of leaving open ports unchecked on a network?

Leaving open ports unchecked on a network can pose several security risks, including:

1. Unauthorized access: Hackers can exploit open ports to gain unauthorized access to the network. They can use various techniques, such as port scanning and network sniffing, to identify open ports and exploit vulnerabilities to access sensitive data or launch cyber attacks.
2. Data breaches: Open ports can provide attackers with an entry point to the network, allowing them to steal sensitive data, such as customer information, financial records, or intellectual property. A data breach can have significant financial and reputational consequences for an organization.
3. Malware infections: Attackers can use open ports to inject malware into the network, compromising the security of systems and devices connected to the network. Malware can disrupt operations, steal data, or launch attacks on other networks or systems.
4. Denial of service (DoS) attacks: Open ports can be targeted in DoS attacks, where attackers flood the network with traffic to overwhelm and disrupt services. This can lead to downtime, loss of productivity, and financial losses for the organization.
5. Regulatory compliance violations: Organizations that fail to secure open ports may be in violation of industry regulations and data protection laws, such as the General Data Protection Regulation (GDPR) or the Health Insurance Portability and Accountability Act (HIPAA). These violations can result in fines, legal action, or damage to the organization's reputation.

Overall, leaving open ports unchecked on a network can expose the organization to a range of security risks that can have serious consequences. It is essential to regularly monitor and secure open ports to protect the network from potential threats.

How to check open ports on a Kubernetes cluster using Powershell?

To check open ports on a Kubernetes cluster using Powershell, you can use the following command:

kubectl get services --all-namespaces -o json | ConvertFrom-Json | Select-Object @{Name="Namespace";Expression={$_.metadata.namespace}}, @{Name="Name";Expression={$_.metadata.name}}, @{Name="Port";Expression={$_.spec.ports.port}}, @{Name="Type"; Expression={$_.spec.type}}

This command will list all services in all namespaces along with their respective ports and types. You can further filter this output based on your requirements.

How to check open ports on a web server using Powershell?

To check open ports on a web server using Powershell, you can use the Test-NetConnection cmdlet. Here's how you can do it:

1. Open Powershell on your local machine.
2. Use the Test-NetConnection cmdlet with the hostname or IP address of the web server and specify the port number you want to check. For example, to check if port 80 (HTTP) is open on a web server with hostname "example.com", you can run the following command:

Test-NetConnection -ComputerName example.com -Port 80

1. This cmdlet will provide you with information about the connection status, such as whether the port is open or closed.
2. You can also use the "-CommonTCPPort" parameter with Test-NetConnection to check multiple common ports at once. For example, to check ports 80, 443, and 8080, you can run the following command:

Test-NetConnection -ComputerName example.com -CommonTCPPort HTTP,HTTPS,8080

By using Test-NetConnection cmdlet in Powershell, you can quickly and easily check open ports on a web server.