He understood your problem.
Cip client can be blocked with Webo's solutions.
However you can't 100% block all clients.
Your question is metaphorically similar to "how do I block people from entering my house?".
The simple answer is get a door with a lock.
But the truth is people can still get into your house by using a bomb or a chainsaw or a lockpick on your door or if your windows are open get through them.
All you can do is make it harder for others to get into your house or to use a different client than yours.
And the way you make it harder is by listening to other people's answers and ideas, learning, thinking, asking good questions to yourself and to others, and by actually trying out ideas and solutions yourself before asking for help again.
So the answer to your question "who helps me solve my problem" is YOU, maybe with the help of others if you think and try and pay attention first, or if you pay them.
Good luck.