Client Rejected Error

Elmer Keil ekeil "at" mitre.org
Fri Jan 16 22:07:00 2004


We developed an application using VNC to run interactive UNIX programs
from a web browser.  About 8-10 weeks ago it was running great.  We
stopped using it to plunge into the documentation mire.  Recently, when
we tried to get some screen snapshots, we discovered that it was broken
- VNC window crash ( VNC log is listed below ).  CVS indicates that no
code changes have been made since the last time it worked correctly.
Old logs do not show an AUDIT line.  The Apache log indicates that xset,
xhost, etc. can not open the display.  Reverting to VNC 3.3.4 does not
change things.

I suspect that a SysAdmin tightened up the security on something.  Port
61289 is not valid for any thing that I know about and the port number
changes each time.  Note VNC still works when initiated from a UNIX
command line and accessed via a browser.

Research indicates that others have had similar problems but I can't
locate any solution.  Does anyone know what's causing this ?

TIA  Elmer  - ekeil at mitre dot org

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16/01/04 12:04:51 Xvnc version 3.3.7 - built Feb 28 2003 18:43:51
16/01/04 12:04:51 Copyright (C) 2002-2003 RealVNC Ltd.
16/01/04 12:04:51 Copyright (C) 1994-2000 AT T Laboratories Cambridge.
16/01/04 12:04:51 All Rights Reserved.
16/01/04 12:04:51 See http://www.realvnc.com for information on VNC
16/01/04 12:04:51 Desktop name 'SuperEasy' (bugatti:3)
16/01/04 12:04:51 Protocol version supported 3.3
16/01/04 12:04:51 Listening for VNC connections on TCP port 5903
16/01/04 12:04:51 Listening for HTTP connections on TCP port 5803
16/01/04 12:04:51   URL http://bugatti:5803
16/01/04 12:04:58 httpd: get '' for 128.29.51.35
16/01/04 12:04:58 httpd: defaulting to 'index.vnc'

16/01/04 12:05:13 Got connection from client 128.29.51.35
16/01/04 12:05:13 Protocol version 3.3
16/01/04 12:05:13 Using hextile encoding for client 128.29.51.35
16/01/04 12:05:13 Pixel format for client 128.29.51.35:
16/01/04 12:05:13   8 bpp, depth 8
16/01/04 12:05:13   true colour: max r 7 g 7 b 3, shift r 0 g 3 b 6
16/01/04 12:05:34 Client 128.29.51.35 gone
16/01/04 12:05:34 Statistics:
16/01/04 12:05:34   key events received 0, pointer events 135
16/01/04 12:05:34   framebuffer updates 20, rectangles 54, bytes 534390
16/01/04 12:05:34     hextile rectangles 54, bytes 534390
16/01/04 12:05:34   raw bytes equivalent 1052265, compression ratio
1.969096
AUDIT: Fri Jan 16 12:05:50 2004: 15186 Xvnc: client 2 rejected from IP
128.29.35
.37 port 61289