[App_rpt-users] Echo link inbound prohibition?

All, I have had to shut down access to echolink on all my nodes due to an unbelievable amount of problems I have been encountering, too many to mention here.

From poor operating procedures to foreign language countries attaching for no good reason, I just can't take it anymore.

Then it occurred to me, I rarely have a need to use Echolink, but when I do, it is only outbound anyway. So the question is how can I leave echolink up but not allow inbound calls to my nodes or maybe even better setup a allow list? Thanks in advance. Lu KA4EPS