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Security, Authentication & Authorization

Table of Contents

cmd:xauth

Usage

copy & paste

Symptom

tong@sunny:~$ xterm
Xlib: connection to "sunny:11.0" refused by server
Xlib: Invalid MIT-MAGIC-COOKIE-1 key
xterm Xt error: Can't open display: sunny:11.0

tong@sunny:~$ DISPLAY='chaos:0.0'

tong@sunny:~$ xterm
Xlib: connection to "chaos:0.0" refused by server
Xlib: Client is not authorized to connect to Server
xterm Xt error: Can't open display: chaos:0.0

Resolution

tong@chaos:~$ xauth list
chaos:0  MIT-MAGIC-COOKIE-1  376f307045725251544d6b734f477268

tong@sunny:~$ xauth add \
chaos:0  MIT-MAGIC-COOKIE-1  376f307045725251544d6b734f477268

tong@sunny:~$ xterm

— NP!

Symptom

change back to security way:

tong@sunny:~$ DISPLAY='sunny:11.0'
tong@sunny:~$ xterm
Xlib: connection to "sunny:11.0" refused by server
Xlib: Invalid MIT-MAGIC-COOKIE-1 key
xterm Xt error: Can't open display: sunny:11.0

tong@sunny:~$ xauth list
sunny:11  MIT-MAGIC-COOKIE-1  82b1b590b7d7170aee11632d59b09498


	tmp solution

server

xauth extract - $DISPLAY > ~/s/tmp/xc.$HOST_N_S.bin

client

ls ~/s/tmp/xc.*.bin
xauth merge - < `!!`

xauth list

client

A good document on Xauth is available at ftp://ph-meter.beckman.uiuc.edu/security/xsecurity.txt

A primer on setting up Xauthority.
http://www.neosoft.com/tcl/ftparchive/sorted/misc/Xauthority/

Vivek Khera (khera@cs.duke.edu) discusses how to start the X server in a secure mode. Note that it's specific to Sun.

<URL: http://ce-toolkit.crd.ge.com/tkxauth/> is the URL for information on using/debugging Tk vs X windows authorization problems.

http://www.xs4all.nl/~zweije/xauth-6.html

The best

http://ciac.llnl.gov/ciac/documents/ciac2316.html#2.0