Intranet penetration HTTP through 
When we start the nail net penetration according to the official nail tutorial , The command line window is displayed as the picture above to remind us of the successful startup .
As shown in the figure, there are two links , One for http link , One for https link .
Usually we can only access http link , The specific reasons are not explained here .
After that, if you want to access our php The project needs to open a local http-server service .
The specific operation is ：
- download node.js
Official website address ： https://nodejs.org
After the download is complete, enter the command at the command line $ node -v as well as $ npm -v Check version , Confirm whether the installation is successful . - download http-server
Input... At the terminal ：
$ npm install http-server -g - Turn on http-server service
The terminal enters the target folder , Then input... At the terminal ：
http-server -c-1
When we turn on http-sever After the service, we can access our... Under the LAN PHP project .
When using intranet penetration, we will find thinkPhp5 In the framework, the project is deployed in 80 On port , For example, we usually use http://127.0.0.1/MicroCourse2021-main/thinkphp5.0guide-step1/public To start a PHP project , If we were 127.0.0.1 Add after :80 To use 80 Ports can also be used to start the project normally .
But intranet penetration is our default URL Mapping to 8080 port , So I changed thinkPhp5 Start port of , Here are the locations of the files that need to be changed ：
"D:\xampp\apache\conf\httpd.conf"
Find the following fields , take 80 Change it to 8080.
#Listen 12.34.56.78:80
Listen 80 Then we'll restart it Apache service , If there is an error , Probably 8080 The port is occupied by other processes , I can be in xampp Enter the options shown in the figure to view the port occupancy 
After that, you can end the corresponding process in the task manager , Then we will visit the corresponding URL From other devices （ Not on the same LAN ） To visit our PHP project .
Just after the above operations, I still imagine a company as big as Alibaba , Why is the service provided so inconvenient , There is no function to modify the mapping port , Then I looked back and found that what was written in the original text was very clear ：
Execute the following command , Start nail mesh penetration .
ding ngrok --subdomain dingabcde --port 8080--subdomain Indicates the domain name prefix ,--port Represents the mapped port
We just need to change a parameter at startup , Just because I was in a hurry when I read the document , I didn't even see such an obvious hint , So this also tells us that we must be careful when looking at official documents in the future , You can't just glance at it just because there is little content .
