I know this topic has been beat to death, but in the archives I have not been able to find that anyone actually answered the question.
The question is how do I block port 113. Yes, I know it will break things; yes, I hear that grc sucks; i know that it's no big deal to leave it open, etc. People have posted 50 or so posts on this but I could not find that anyone actually answered the question.
Now that I know the risks, what is the best way to close port 113?
Thank you.
Norms