1000 RMB for help [2nd rewards]!

1000 RMB for help [2nd rewards]! -- Linux Enterprise Application-Linux server application information. For details, refer to the following section. Hello!
I am not familiar with linux because I have encountered CC connection attacks on linux servers.
Windows systems can be downloaded to the software firewall for connection rate control, but linux systems
There is no ready-made firewall software used for defense, so it costs 1000 yuan to seek help from experts.
Yesterday, I received a non-moral saying that I had no pocket money recently and threatened to spend 500 yuan. If I didn't give it to him, I would be connected to attack my game.

Therefore, I would rather give a friend of Justice 1000 yuan than a friend of no morality. The specific implementation is just three points.
The IP address can only establish 10 connections with my server.
At, a maximum of 10 connections can be established between any IP address and my server.
3rd: Prohibit all external http proxies from accessing my server, such as IP: XXX. XXX: 80
In fact, I think these three points are not too difficult for users who know a lot about linux.
If you can achieve the above three points, contact me to provide the linux server for you to set up defense, and I tested the results.
The online bank for industry and commerce will send you 1000 yuan immediately, and you will never give up.
Contact my QQ: 289880888