Test intrusion into a website

General Security
1

I want to invade but I tried the way I know, but it is not successful, it have a waf (firewall)

我想入侵但是我尝试了我知道的办法，但是不成功，有waf（防火墙）

URL： http://moodle.hzcyzx.net
IP：115.236.175.189:80
Server:Apache/2.4.29 (Ubuntu)

Have an sql may be is MySQL
有个数据库，好像是MySQL

Can upload webshell but can’t connect, it can be compressed.
能上传webshell但是连不上，可以被压缩了。

2

Have you tested available exploits for moodle already?

And can you paste the response you got while connecting to your shell?