{"id":73456,"date":"2025-09-30T07:17:40","date_gmt":"2025-09-30T00:17:40","guid":{"rendered":"https:\/\/itsystems.vn\/how-to-check-which-ports-are-open-on-your-computer-using-netstat\/"},"modified":"2026-07-29T11:27:01","modified_gmt":"2026-07-29T04:27:01","slug":"how-to-check-which-ports-are-open-on-your-computer-using-netstat","status":"publish","type":"post","link":"https:\/\/itsystems.vn\/en\/how-to-check-which-ports-are-open-on-your-computer-using-netstat\/","title":{"rendered":"How to Check Which Ports Are Open on Your Computer Using Netstat"},"content":{"rendered":"<h1>How to Check Which Ports Are Open on Your Computer Using Netstat: A Detailed Guide<\/h1>\n<p>The keyword &#8220;check open ports&#8221; and the powerful tool &#8220;Netstat&#8221; are essential concepts in the IT field, especially when users want to ensure that their systems are secure and functioning effectively. In this article, we will explore in detail how to use Netstat to check which network ports are open on your computer, helping you better manage your network connections and detect potential threats.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">The content of the article<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/itsystems.vn\/en\/how-to-check-which-ports-are-open-on-your-computer-using-netstat\/#Why_Is_It_Necessary_to_Check_Open_Network_Ports_on_Your_Computer\" >Why Is It Necessary to Check Open Network Ports on Your Computer?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/itsystems.vn\/en\/how-to-check-which-ports-are-open-on-your-computer-using-netstat\/#What_Is_Netstat_An_Overview_of_the_Powerful_Network_Port_Check_Tool\" >What Is Netstat? An Overview of the Powerful Network Port Check Tool<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/itsystems.vn\/en\/how-to-check-which-ports-are-open-on-your-computer-using-netstat\/#Basic_Usage_Guide_for_Netstat_Command\" >Basic Usage Guide for Netstat Command<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/itsystems.vn\/en\/how-to-check-which-ports-are-open-on-your-computer-using-netstat\/#What_Is_Netstat_Basic_Syntax_of_the_Netstat_Command_You_Need_to_Know\" >What Is Netstat? Basic Syntax of the Netstat Command You Need to Know<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/itsystems.vn\/en\/how-to-check-which-ports-are-open-on-your-computer-using-netstat\/#Common_Netstat_Parameters_for_Checking_Network_Ports\" >Common Netstat Parameters for Checking Network Ports<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/itsystems.vn\/en\/how-to-check-which-ports-are-open-on-your-computer-using-netstat\/#How_to_Check_Open_Ports_on_Windows_Using_Netstat\" >How to Check Open Ports on Windows Using Netstat<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/itsystems.vn\/en\/how-to-check-which-ports-are-open-on-your-computer-using-netstat\/#Checking_Open_TCP_Ports_on_Windows_with_Netstat_Step-by-Step_Guide\" >Checking Open TCP Ports on Windows with Netstat: Step-by-Step Guide<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/itsystems.vn\/en\/how-to-check-which-ports-are-open-on-your-computer-using-netstat\/#Checking_Open_UDP_Ports_on_Windows_with_Netstat_Simple_Guide\" >Checking Open UDP Ports on Windows with Netstat: Simple Guide<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/itsystems.vn\/en\/how-to-check-which-ports-are-open-on-your-computer-using-netstat\/#Tip_Find_Which_Process_Is_Using_Which_Port_on_Windows\" >[Tip] Find Which Process Is Using Which Port on Windows<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/itsystems.vn\/en\/how-to-check-which-ports-are-open-on-your-computer-using-netstat\/#How_to_Check_Open_Ports_on_LinuxmacOS_Using_Netstat\" >How to Check Open Ports on Linux\/macOS Using Netstat<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/itsystems.vn\/en\/how-to-check-which-ports-are-open-on-your-computer-using-netstat\/#Using_Netstat_on_LinuxmacOS_Quickly_Finding_Open_Ports\" >Using Netstat on Linux\/macOS: Quickly Finding Open Ports<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/itsystems.vn\/en\/how-to-check-which-ports-are-open-on-your-computer-using-netstat\/#Example_Netstat_Command_to_Check_Ports_80_443_on_LinuxmacOS\" >[Example] Netstat Command to Check Ports 80, 443 on Linux\/macOS<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/itsystems.vn\/en\/how-to-check-which-ports-are-open-on-your-computer-using-netstat\/#Netstat_Not_Working_Alternative_Commands_on_LinuxmacOS\" >Netstat Not Working? Alternative Commands on Linux\/macOS<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/itsystems.vn\/en\/how-to-check-which-ports-are-open-on-your-computer-using-netstat\/#Analyzing_Netstat_Results_Understanding_Network_Port_Information\" >Analyzing Netstat Results: Understanding Network Port Information<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/itsystems.vn\/en\/how-to-check-which-ports-are-open-on-your-computer-using-netstat\/#Explaining_Network_Port_States_LISTEN_ESTABLISHED_TIME_WAIT%E2%80%A6\" >Explaining Network Port States: LISTEN, ESTABLISHED, TIME_WAIT&#8230;<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/itsystems.vn\/en\/how-to-check-which-ports-are-open-on-your-computer-using-netstat\/#Identifying_Which_Application_Is_Connecting_to_Which_Port\" >Identifying Which Application Is Connecting to Which Port<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/itsystems.vn\/en\/how-to-check-which-ports-are-open-on-your-computer-using-netstat\/#Warning_Unusual_Open_Ports_Signs_of_Security_Risk\" >[Warning] Unusual Open Ports: Signs of Security Risk<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/itsystems.vn\/en\/how-to-check-which-ports-are-open-on-your-computer-using-netstat\/#Troubleshooting_Network_Issues_with_Netstat\" >Troubleshooting Network Issues with Netstat<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/itsystems.vn\/en\/how-to-check-which-ports-are-open-on-your-computer-using-netstat\/#Using_Netstat_to_Identify_Network_Connection_Errors\" >Using Netstat to Identify Network Connection Errors<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/itsystems.vn\/en\/how-to-check-which-ports-are-open-on-your-computer-using-netstat\/#Detecting_Malware_Engaging_Network_Connections_with_Netstat\" >Detecting Malware Engaging Network Connections with Netstat<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/itsystems.vn\/en\/how-to-check-which-ports-are-open-on-your-computer-using-netstat\/#Example_Fixing_If_you_need_assistance_please_contact_us_right_away_IT_SYSTEMS_VIETNAM_CO_LTD_IT_Solutions_%E2%80%93_Your_Business_IT_Department_HOTLINE_0283_9950_359_Email_contactitsystemscomvn_Website_https_itsystemsvn_Facebook_https_wwwfacebookcomITSystemsVIETNAM_Youtube_https_wwwyoutubecomITSYSTEMS_HCM_2nd_Floor_1841A_Le_Van_Sy_Street_Ward_10_Phu_Nhuan_District_Ho_Chi_Minh_City_Vietnam_HCM_32110_Phan_Dinh_Phung_Street_Ward_15_Phu_Nhuan_District_Ho_Chi_Minh_City_Vietnam_Hanoi_House_No_22_Garden_Villa_Area_Vinh_Hoang_Urban_Area_431_Tam_Trinh_Street_Hoang_Mai_District_Hanoi_Vietnam_Binh_Duong_Binh_Duong_Boulevard_Phu_Hoa_Ward_Thu_Dau_Mot_City_Binh_Duong_Province_Vietnam_Related_services_from_IT_Systems_If_your_team_is_dealing_with_this_issue_in_a_live_business_environment_these_services_can_help_you_move_from_diagnosis_to_a_stable_operating_process_Windows_licensing_for_business_Windows_license_pricing_IT_support_services_FAQ_When_should_a_business_ask_IT_Systems_for_support\" >[Example] Fixing  If you need assistance, please contact us right away \nIT SYSTEMS VIETNAM CO., LTD \nIT Solutions \u2013 Your Business IT Department \nHOTLINE: 0283 9950 359 \n Email: contact@itsystems.com.vn  \nWebsite: https:\/\/itsystems.vn\/ \n Facebook: https:\/\/www.facebook.com\/ITSystems.VIETNAM \n Youtube: https:\/\/www.youtube.com\/@ITSYSTEMS\n HCM: 2nd Floor, 184\/1A Le Van Sy Street, Ward 10, Phu Nhuan District, Ho Chi Minh City, Vietnam \nHCM: 321\/10 Phan Dinh Phung Street, Ward 15, Phu Nhuan District, Ho Chi Minh City, Vietnam. \n Hanoi: House No. 22, Garden Villa Area, Vinh Hoang Urban Area, 431 Tam Trinh Street, Hoang Mai District, Hanoi, Vietnam. \n B\u00ecnh D\u01b0\u01a1ng: Binh Duong Boulevard, Phu Hoa Ward, Thu Dau Mot City, Binh Duong Province, Vietnam \n\n\nRelated services from IT Systems\nIf your team is dealing with this issue in a live business environment, these services can help you move from diagnosis to a stable operating process.\n\nWindows licensing for business\nWindows license pricing\nIT support services\n\n\n\n\nFAQ\nWhen should a business ask IT Systems for support?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/itsystems.vn\/en\/how-to-check-which-ports-are-open-on-your-computer-using-netstat\/#Can_IT_Systems_help_review_the_current_environment_before_proposing_a_solution\" >Can IT Systems help review the current environment before proposing a solution?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/itsystems.vn\/en\/how-to-check-which-ports-are-open-on-your-computer-using-netstat\/#Does_this_topic_connect_to_ongoing_IT_operations\" >Does this topic connect to ongoing IT operations?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/itsystems.vn\/en\/how-to-check-which-ports-are-open-on-your-computer-using-netstat\/#Need_help_applying_this_to_your_business\" >Need help applying this to your business?<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Why_Is_It_Necessary_to_Check_Open_Network_Ports_on_Your_Computer\"><\/span>Why Is It Necessary to Check Open Network Ports on Your Computer?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Checking open network ports is crucial for securing your personal information and computer system. Open ports allow data to enter and exit your computer. If there are unwanted open ports, it can create security vulnerabilities that hackers could exploit. By checking and managing network ports, you can prevent attacks and protect your data.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_Is_Netstat_An_Overview_of_the_Powerful_Network_Port_Check_Tool\"><\/span>What Is Netstat? An Overview of the Powerful Network Port Check Tool<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Netstat (short for &#8220;Network Statistics&#8221;) is a command-line tool that allows you to view network connections and ports that are open on your computer. This tool is available on most operating systems, including Windows, Linux, and macOS, providing users with a clear insight into the status of their network connections.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Basic_Usage_Guide_for_Netstat_Command\"><\/span>Basic Usage Guide for Netstat Command<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"What_Is_Netstat_Basic_Syntax_of_the_Netstat_Command_You_Need_to_Know\"><\/span>What Is Netstat? Basic Syntax of the Netstat Command You Need to Know<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The basic syntax of the Netstat command is easy to use. You just need to open Command Prompt (on Windows) or Terminal (on Linux\/macOS) and type <strong>netstat<\/strong> to see the current connection information. Some key information you will see includes IP addresses, port statuses, and the number of connections.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Common_Netstat_Parameters_for_Checking_Network_Ports\"><\/span>Common Netstat Parameters for Checking Network Ports<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>-a:<\/strong> Displays all connections and listening ports.<\/li>\n<li><strong>-n:<\/strong> Displays IP addresses and port numbers in numeric form, without resolving domain names.<\/li>\n<li><strong>-p:<\/strong> Allows displaying information about the protocol being used.<\/li>\n<li><strong>-b:<\/strong> Displays a list of processes using the ports.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"How_to_Check_Open_Ports_on_Windows_Using_Netstat\"><\/span>How to Check Open Ports on Windows Using Netstat<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Checking_Open_TCP_Ports_on_Windows_with_Netstat_Step-by-Step_Guide\"><\/span>Checking Open TCP Ports on Windows with Netstat: Step-by-Step Guide<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>To check open TCP ports on Windows, follow these steps:<\/p>\n<ol>\n<li>Open Command Prompt by searching for \u201ccmd\u201d and pressing Enter.<\/li>\n<li>Type the command <strong>netstat -an<\/strong> to display detailed information about TCP connections.<\/li>\n<li>Observe the list of open ports in the LISTEN or ESTABLISHED state.<\/li>\n<\/ol>\n<h3><span class=\"ez-toc-section\" id=\"Checking_Open_UDP_Ports_on_Windows_with_Netstat_Simple_Guide\"><\/span>Checking Open UDP Ports on Windows with Netstat: Simple Guide<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>To check open UDP ports, you can also use the command <strong>netstat -anu<\/strong>. This will help you identify which ports are receiving data without requiring connection establishment.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Tip_Find_Which_Process_Is_Using_Which_Port_on_Windows\"><\/span>[Tip] Find Which Process Is Using Which Port on Windows<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>To identify the process using a port, you can add the <strong>-b<\/strong> parameter to the command: <strong>netstat -ab<\/strong>. This command will show you information about the processes and the ports they are occupying, thereby helping you detect unknown applications.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"How_to_Check_Open_Ports_on_LinuxmacOS_Using_Netstat\"><\/span>How to Check Open Ports on Linux\/macOS Using Netstat<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Using_Netstat_on_LinuxmacOS_Quickly_Finding_Open_Ports\"><\/span>Using Netstat on Linux\/macOS: Quickly Finding Open Ports<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>On Linux and macOS, using Netstat to check open ports is similar to on Windows. You just need to open Terminal and type <strong>netstat -an<\/strong> to view active network connection information.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Example_Netstat_Command_to_Check_Ports_80_443_on_LinuxmacOS\"><\/span>[Example] Netstat Command to Check Ports 80, 443 on Linux\/macOS<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>To specifically check port 80 (HTTP) and port 443 (HTTPS), you can use the command: <strong>netstat -an | grep 80<\/strong> or <strong>netstat -an | grep 443<\/strong>.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Netstat_Not_Working_Alternative_Commands_on_LinuxmacOS\"><\/span>Netstat Not Working? Alternative Commands on Linux\/macOS<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>If the Netstat command is not functioning, you can use <strong>ss<\/strong> as an alternative. For example, <strong>ss -tuln<\/strong> will also provide you with information about open TCP and UDP ports.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Analyzing_Netstat_Results_Understanding_Network_Port_Information\"><\/span>Analyzing Netstat Results: Understanding Network Port Information<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Explaining_Network_Port_States_LISTEN_ESTABLISHED_TIME_WAIT%E2%80%A6\"><\/span>Explaining Network Port States: LISTEN, ESTABLISHED, TIME_WAIT&#8230;<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>In the results from the Netstat command, states such as LISTEN, ESTABLISHED, and TIME_WAIT inform you about the status of ports and connections. LISTEN indicates that the port is waiting for incoming connections, while ESTABLISHED signifies active connections.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Identifying_Which_Application_Is_Connecting_to_Which_Port\"><\/span>Identifying Which Application Is Connecting to Which Port<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>By analyzing the list of processes provided by Netstat, you can easily identify which application is using a specific network port. This is very helpful when you need to control and manage network access permissions.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Warning_Unusual_Open_Ports_Signs_of_Security_Risk\"><\/span>[Warning] Unusual Open Ports: Signs of Security Risk<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>If you discover an unusual open port that you do not recognize, consider checking your security immediately. Suspicious open ports may indicate malware or network attacks, and you need to take timely remedial measures.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Troubleshooting_Network_Issues_with_Netstat\"><\/span>Troubleshooting Network Issues with Netstat<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Using_Netstat_to_Identify_Network_Connection_Errors\"><\/span>Using Netstat to Identify Network Connection Errors<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>If you experience network connection issues, Netstat can help identify errors. By checking the open ports and connection statuses, you can easily analyze the cause of the problem and find appropriate solutions.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Detecting_Malware_Engaging_Network_Connections_with_Netstat\"><\/span>Detecting Malware Engaging Network Connections with Netstat<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>If you suspect that your computer is infected with a virus or malware, the Netstat command is one of the first steps you should take. Checking the ports and active processes can help you detect issues early and rectify them in a timely manner.<\/p>\n<h3>[Example] Fixing  <font color=\"blue\">If you need assistance, please contact us right away<\/font><\/br><br \/>\n<b>IT SYSTEMS VIETNAM CO., LTD<\/b><br \/>\n<\/br><i>IT Solutions \u2013 Your Business IT Department<\/i><br \/>\n<\/br>HOTLINE: <b>0283 9950 359<\/b><br \/>\n <\/br>Email: <a href=\"mailto:contact@itsystems.com.vn\">contact@itsystems.com.vn <\/a><br \/>\n<\/br>Website: <a href=https:\/\/itsystems.vn\/en\/>https:\/\/itsystems.vn\/<\/a><br \/>\n <\/br>Facebook: <a href=https:\/\/www.facebook.com\/ITSystems.VIETNAM>https:\/\/www.facebook.com\/ITSystems.VIETNAM<\/a><br \/>\n <\/br>Youtube: <a href=https:\/\/www.youtube.com\/@ITSYSTEMS>https:\/\/www.youtube.com\/@ITSYSTEMS<\/a><\/p>\n<p> <\/br><b>HCM: <\/b>2nd Floor, 184\/1A Le Van Sy Street, Ward 10, Phu Nhuan District, Ho Chi Minh City, Vietnam<br \/>\n<\/br><b>HCM: <\/b>321\/10 Phan Dinh Phung Street, Ward 15, Phu Nhuan District, Ho Chi Minh City, Vietnam.<br \/>\n <\/br><b>Hanoi: <\/b>House No. 22, Garden Villa Area, Vinh Hoang Urban Area, 431 Tam Trinh Street, Hoang Mai District, Hanoi, Vietnam.<br \/>\n <\/br><b>B\u00ecnh D\u01b0\u01a1ng: <\/b>Binh Duong Boulevard, Phu Hoa Ward, Thu Dau Mot City, Binh Duong Province, Vietnam<br \/>\n<!-- its-deep-aio-en-related-2026-07-27 --><\/p>\n<section class=\"its-deep-aio-related\" aria-label=\"Related IT Systems services\">\n<h2>Related services from IT Systems<\/h2>\n<p>If your team is dealing with this issue in a live business environment, these services can help you move from diagnosis to a stable operating process.<\/p>\n<ul>\n<li><a href=\"https:\/\/itsystems.vn\/en\/microsoft-business-licensing\/microsoft-windows-licensing\/\">Windows licensing for business<\/a><\/li>\n<li><a href=\"https:\/\/itsystems.vn\/en\/microsoft-business-licensing\/windows-license-pricing\/\">Windows license pricing<\/a><\/li>\n<li><a href=\"https:\/\/itsystems.vn\/en\/it-services-for-businesses\/it-support-services\/\">IT support services<\/a><\/li>\n<\/ul>\n<\/section>\n<p><!-- its-deep-aio-en-faq-2026-07-27 --><\/p>\n<section class=\"its-deep-aio-faq\" aria-label=\"Frequently asked questions\">\n<h2>FAQ<\/h2>\n<h3>When should a business ask IT Systems for support?<\/h3>\n<p>Ask for support when the issue affects users, business data, security, licensing compliance, service availability or daily operations. A short technical review often prevents repeated incidents and hidden costs.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Can_IT_Systems_help_review_the_current_environment_before_proposing_a_solution\"><\/span>Can IT Systems help review the current environment before proposing a solution?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Yes. IT Systems can review the current setup, identify risks, map the issue to the right service scope and recommend a practical next step for your business.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Does_this_topic_connect_to_ongoing_IT_operations\"><\/span>Does this topic connect to ongoing IT operations?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>In most cases, yes. Problems around software, cloud, endpoint, network, backup or security should be connected to a broader IT operations plan instead of being handled as isolated incidents.<\/p>\n<\/section>\n<p><!-- its-deep-aio-en-cta-2026-07-27 --><\/p>\n<section class=\"its-deep-aio-cta\" aria-label=\"Contact IT Systems\">\n<h2><span class=\"ez-toc-section\" id=\"Need_help_applying_this_to_your_business\"><\/span>Need help applying this to your business?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>IT Systems Vietnam can help assess the issue, recommend the right service path and support implementation for your team.<\/p>\n<p><a class=\"button\" href=\"https:\/\/itsystems.vn\/en\/contact-it-systems-vietnam\/\">Contact IT Systems<\/a> <a class=\"button\" href=\"https:\/\/itsystems.vn\/en\/it-services-for-businesses\/it-support-services\/\">View IT support services<\/a><\/p>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>How to Check Which Ports Are Open on Your Computer Using Netstat: A Detailed Guide The keyword &#8220;check open ports&#8221; and the powerful tool &#8220;Netstat&#8221; are essential concepts in the IT field, especially when users want to ensure that their systems are secure and functioning effectively. In this article, we will explore in detail how [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":73454,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"rank_math_focus_keyword":"check open ports","rank_math_title":"How to Check Which Ports Are Open on Your Computer Using Netstat","rank_math_description":"Checking open ports on your computer with Netstat helps you secure and troubleshoot your network effectively.","rank_math_robots":"","rank_math_canonical_url":"","rank_math_schema":"","footnotes":""},"categories":[2146,1344],"tags":[],"class_list":["post-73456","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-it-knowledge","category-uncategorized-en"],"wpml_current_locale":"en_US","wpml_translations":{"vi_VN":{"locale":"vi_VN","id":73452,"slug":"cach-kiem-tra-cong-nao-dang-mo-tren-may-tinh-voi-netstat","post_title":"C\u00e1ch Ki\u1ec3m Tra C\u1ed5ng N\u00e0o \u0110ang M\u1edf Tr\u00ean M\u00e1y T\u00ednh V\u1edbi Netstat","href":"https:\/\/itsystems.vn\/cach-kiem-tra-cong-nao-dang-mo-tren-may-tinh-voi-netstat\/"}},"_links":{"self":[{"href":"https:\/\/itsystems.vn\/en\/wp-json\/wp\/v2\/posts\/73456","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itsystems.vn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itsystems.vn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/itsystems.vn\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/itsystems.vn\/en\/wp-json\/wp\/v2\/comments?post=73456"}],"version-history":[{"count":2,"href":"https:\/\/itsystems.vn\/en\/wp-json\/wp\/v2\/posts\/73456\/revisions"}],"predecessor-version":[{"id":85887,"href":"https:\/\/itsystems.vn\/en\/wp-json\/wp\/v2\/posts\/73456\/revisions\/85887"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/itsystems.vn\/en\/wp-json\/wp\/v2\/media\/73454"}],"wp:attachment":[{"href":"https:\/\/itsystems.vn\/en\/wp-json\/wp\/v2\/media?parent=73456"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itsystems.vn\/en\/wp-json\/wp\/v2\/categories?post=73456"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itsystems.vn\/en\/wp-json\/wp\/v2\/tags?post=73456"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}