Here are some common problems:
lbxproxy exits with an "access denied" error.
This means the LOCAL system isn't accepting connections from the REMOTE system due to permissions errors. See the Remote X Apps Mini-HOWTO for details on these issues.
As a simple trouble-shooting measure, try running a simple X app
like [Bash Questions] .:: www.bark.com ::. .:: jalalive5com.federatedjournals.com ::. [Research on Neo4j] .:: index-website-on-google-search-cons.vercel.app ::. xclock on REMOTE and have it display on the local
system without using .:: bcraweb.bcra.gob.ar ::. .:: pod.beautifulmathuncensored.de ::. lbxproxy:
$ xclock -display LOCAL:0
If that doesn't work, it's xhost or some other basic X
problem, not LBX.