X ports

I would like for an X application running on a box A to send its output
to an X server running on a box B. B is behind a firewall. What ports
should the firewall open in order to allow this? Can all the ports opened
in the firewall be mapped onto one, and only one, port on B, or must the
mapping be one-to-one?

On Fri, 20 May 2005 14:58:32 GMT, Augustus SFX van Dusen
<(E-Mail Removed)> wrote:
> I would like for an X application running on a box A to send its output
> to an X server running on a box B. B is behind a firewall. What ports
> should the firewall open in order to allow this? Can all the ports opened
> in the firewall be mapped onto one, and only one, port on B, or must the
> mapping be one-to-one?
>
>
If you use ssh X forwarding, I think you only need port 22.

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