How to test if the server port in Windows system is open?

When dealing with server failures at work, it is often necessary to check if the server service port of Windows is open and whether it can communicate normally. The following small series share with you how to detect whether the server port is open under the windows environment.

Software Name:

WindowsPing Tool 1.0.20140808 Green Edition

Software Size:

775KB

updated:

2015-07-30

1, we have regular contact at work are TCP, UDP ports are rarely used. The method of detecting whether the TCP port can be accessed outside is very simple, and telnet can test the result.

For example, telnet www.baidu.com 80

2, test the port of Baidu server like this, this can be seen to be reactive, is open Passed. If it is not open, it looks like the following.

For example, telnet www.baidu.com 81

3, at the beginning of this article, the psping software download is provided. Of course, you can also go to the Microsoft website to download psping. Easy to use, you can test TCP or UDP, it is very practical.

4, you can look at the use of this command

5, use it to test whether the TCP port is open and communication

6, if the telnet and psping in the Windows system are not available, we can open the test on the web page to test whether the port is open communication

7, testing UDP under Windows is really a bit of a hassle, I generally Choose to test on Linux. If you want to test UDP on Windows, you can choose to install nmap for testing.