-X vs -Y

-X = More security , less compatibility
-Y = Less security , more compatibility


#!/bin/bash
ssh -Y -o IdentitiesOnly=yes -o UserKnownHostsFile=/dev/null \
-o StrictHostKeyChecking=no -o ServerAliveInterval=60  \
-o LogLevel=ERROR  -F /dev/null \
-i /Users/morpheous/Library/CloudStorage/Dropbox/Misc/SSH2/KEYS/6105Buttons3 \
[email protected]


#!/bin/bash
sshpass -p "wsu" ssh -Y -o IdentitiesOnly=yes -o UserKnownHostsFile=/dev/null \
-o StrictHostKeyChecking=no -o ServerAliveInterval=60 \
-o LogLevel=ERROR -F /dev/null \
[email protected]

SSHD Config Edits


sudo nano /etc/ssh/sshd_config


X11Forwarding yes
X11DisplayOffset 10
X11UseLocalhost yes


sudo systemctl restart sshd

MobaXTterm

uses localhost / loopback address = 127.0.0.1
verify after connecting ssh session ipconfig
I had best results setting MobaXterm ➡️ Settings ➡️ X11 ➡️ "Rootless": Transparent X11 server Jwm window borders ( experimental )

XQuartz on MacOSX

instead of mobaxterm
Install Package ( pkg ) : https://www.xquartz.org
you have to logout of osx , and relog
Make sure its open before ssh-ing :
- open -a XQuartz

The $DISPLAY Variable

DISPLAY=[host]:display_number.screen_number
Host = where the display server ( X server ) is running.
Display Number = specific display server instance on that host
Screen Number = specific screen on a display server

X servers listen on ports 6000 + display_number
Example Using Port :13
- the corresponding port is 6000 + 13 = 6013


sudo netstat -plunt | grep 601

So based on X11DisplayOffset , it increments each time a new simultaneous -X session is created
- DISPLAY=localhost:10
- DISPLAY=localhost:11
- DISPLAY=localhost:12
- ...
Manual / Forced Reservation
- ssh -L 6013:localhost:6013 username@node_ip
- export DISPLAY=localhost:13

rendering frames on the "node" instead

https://en.wikipedia.org/wiki/Xvfb

fMRI HTML Viewer


sudo apt install libgtk-3-dev libwebkit2gtk-4.0-dev
pkg-config --cflags --libs gtk+-3.0 webkit2gtk-4.0
go get github.com/webview/webview_go


xxxxxxxxxx
package main

import (
 webview "github.com/webview/webview_go"
)

func main() {
    w := webview.New( true )
    defer w.Destroy()
    if w == nil { panic( "failed to create webview instance" ) }
    w.SetTitle( "Simple Browser" )
    w.SetSize( 800 , 600 , webview.HintNone )
    w.Navigate( "https://niivue.github.io/niivue/features/save.custom.html.html" )
    w.Run()
}