Why do i have to use clent.connect to connect to rust server

I set up a server and its running great. i have people connecting and its doing pretty good. I am wondering why do i have to use clent.connect to connect to rust server but everyone else can connect to it through the server list and add it to there favorites but i cant 

is the server on your local network?

yes it is. is this just the way it has to be or is there a way around it 

asfXry04ltLmsDH.jpg ridgeshot21

yes it is. is this just the way it has to be or is there a way around it 

just way its going to be.