How can I avoid conflict between the ports caused after I start {CUPS, SSH} services because the port is already ocupied by {ypserv,ypbind} services?

Linux server daemons listen on a sockets, these can be either UNIX domain sockets or network sockets (TCP or UDP). Daemons can use multiple sockets, but a socket can only be used by a single daemon.

Under some circumstances, multiple daemons try to bind to the same socket. Only the first daemon attempting to bind to the socket can succeed - if the socket is already occupied all further ...