Re: which port is used when one sets DISPLAY=clienthost:0 ?

[cadu <oxyopes@googlemail.com>]

Thanks again Stuart. You are responsible of a greate improvement
of my understanding on that. Just a last question  :-)
If i SSH from user1@A to user1@B, and then `su user2`
inside B, the X forwarding is broken, even if i
setenv DISPLAY localhost:10 or wharever number.
This is the message:
  X11 connection rejected because of wrong authentication.
  X connection to localhost:10.0 broken (explicit kill or server shutdown).

Is it possible to be fixed? Like if user2 is root, i cannot
log in directy to it from SSH. All the best ...


> If it's DISPLAY=A:0 it would be a (non-encrypted,
> non-tunnelled) TCP connection to A port 6000.
>
> Whereas DISPLAY=A:1 would be to A port 6001
> (and the X server would need to know how to
> talk to a second display, such as two monitors
> or some virtual display setup).