You need to add certain rules to block specific traffic used by the program, if such exists.
And yes, it's useless answer, but so was your question. How do you expect to get anything useful, when you don't provide any info? It's like asking how to prevent animals from ruining your garden - it's important to know if we're talking about mice or elephants.
People who quote full posts should be spanked with ethernet cable. Some exceptions for multi-topic threads may apply.