[garbeam]

fyi, there are two ways of using X across the network. The X forwarding via an ssh tunnel that you refer to, is technically rendered on your machine where you forward the DISPLAY from. The X client on the remote side is a 'client' and connects to your forwarded (local) display. The rendering happens in that display server (local) that dumps the result into your graphics device framebuffer/onto your screen. The instructions though come from your client on that remote machine, incl. any drawing primitives like drawing a line etc. But still the actual resources that client uses are local to your X server.

The other approach is (and that was like in the older days), when you avoid any tunneling but let X clients connect to open X servers across the network, like if your X display server listens on all NICs for clients. This setup is still technically possible but pretty much discouraged for security concerns. But with this setup you could also run a local xterm or whatever X client against a remote X server (like your neighbours ;), assumed it would accept your connection.

Like: DISPLAY=yourneighbour.host:0 xterm

BR, garbeam