xon with SuSE9.1

Dear list, I am testing SuSE9.1 on an AMD64 box. I noticed that SuSE9.1 X server does not permit X output from other servers/workstations listed in /etc/hosts.equiv, although I invoked `xhost +server1 server2' etc in advance. It seems that I have to modify /etc/services to enable x11 tcp/udp, and /etc/X11/xinit/xserverrc to listen tcp. I do not know if these are all. I wonder how we can enable xon as with SuSE9.0 without much hustles. yoriaki fujimori