On Tue, Jun 29, 2021 at 04:33:50PM +0000, Andrew M.A. Cater wrote: > ssh -Y is similar to ssh -X but does some authentication - yuu don't have > to use xhost+ or similar.
You don't use xhost with ssh -X, either. At least, not explicitly. ssh takes care of that for you. In fact, on Debian, ssh -X and ssh -Y do exactly the same thing, due to changes that Debian made. This is documented in the ssh(1) man page. If you've been using "xhost +" together with "ssh -X", you've been doing it wrong (and *dramatically* destroying all your network security) all along.
