MGUSER Hacked

Hi

I have given MG accounts to a number of home clients, these accounts have been hacked for some time, I changed the server, I also changed the account password, but the accounts are hacked again, interestingly, the IPs all change locally and permanently.

I used to use r82 nano, now I use r81 e0 but there is still a problem.

Thanks to anyone who has a suggestion

Thank you very much for your suggestion. iptables is installed, the problem is that the accounts are connected with different IPs from my own country. I will change the customer's password, but tomorrow the account will be hacked again and reshared with a new IP similar to the customer's address but different from it.

regard