Obtaining IP address over internet

2001-05-17 Thread Steve Godfrey

I wank to VNC  to my home PC from work over the internet, My dial-up modem
connection is occasionally dropped and the IP address will change every time
the PC reconnects.  Any suggestion for obtaining my IP address remotely?

Thanks


Steve Godfrey
WAN Team
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RE: Obtaining IP address over internet

2001-05-17 Thread Howlett, Simon (NESL-IT)

Isn't that illegal ? 

Simon Howlett
NT Server Team


 -Original Message-
From:   Steve Godfrey [mailto:[EMAIL PROTECTED]] 
Sent:   17 May 2001 07:44
To: [EMAIL PROTECTED]
Subject:Obtaining IP address over internet

I wank to VNC  to my home PC from work over the internet, My dial-up modem
connection is occasionally dropped and the IP address will change every time
the PC reconnects.  Any suggestion for obtaining my IP address remotely?

Thanks


Steve Godfrey
WAN Team
-
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RE: Obtaining IP address over internet

2001-05-17 Thread Steve Godfrey

My typo or obtaining an IP address?!?  I hoped no-one would notice that one
:-(

>>> [EMAIL PROTECTED] 05/17/01 10:01am >>>
Isn't that illegal ?

Simon Howlett
NT Server Team


 -Original Message-
From:   Steve Godfrey [mailto:[EMAIL PROTECTED]]
Sent:   17 May 2001 07:44
To: [EMAIL PROTECTED]
Subject:Obtaining IP address over internet

I wank to VNC  to my home PC from work over the internet, My dial-up modem
connection is occasionally dropped and the IP address will change every time
the PC reconnects.  Any suggestion for obtaining my IP address remotely?

Thanks


Steve Godfrey
WAN Team
-
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No warranty of any kind is given in respect of any information contained in
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RE: Obtaining IP address over internet

2001-05-17 Thread Gustafsson, Bjorn

Huh?
How on earth could that be illegal?

Okay, the quick solution:
Obtain one of those free subdomains (like cjb.net and the likes of it). You
could then VNC to that address and wouldn't have to worry about the ip. Of
course you would need a client that refreshes the domain IP every now and
then.

Can't say if it works though, never attemped the likes of it (no free local
calls in sweden), but there shouldn't be any problems with it. I however
doubt that your system/network adminstrator would like you VNCing from work
to your home machine :)

  /Bjorn, who will attempt the same thing once he can get his hands on a
broadband/DSL connection :)

> -Original Message-
> From: Howlett, Simon (NESL-IT)
> [mailto:[EMAIL PROTECTED]]
> Sent: den 17 maj 2001 11:01
> To: [EMAIL PROTECTED]
> Subject: RE: Obtaining IP address over internet
> 
> 
> Isn't that illegal ? 
> 
> Simon Howlett
> NT Server Team
> 
> 
>  -Original Message-
> From: Steve Godfrey [mailto:[EMAIL PROTECTED]] 
> Sent: 17 May 2001 07:44
> To:   [EMAIL PROTECTED]
> Subject:  Obtaining IP address over internet
> 
> I wank to VNC  to my home PC from work over the internet, My 
> dial-up modem
> connection is occasionally dropped and the IP address will 
> change every time
> the PC reconnects.  Any suggestion for obtaining my IP 
> address remotely?
> 
> Thanks
> 
> 
> Steve Godfrey
> WAN Team
> -
> To unsubscribe, send a message with the line: unsubscribe vnc-list
> to [EMAIL PROTECTED]
> See also: http://www.uk.research.att.com/vnc/intouch.html
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> received this e-mail in error please notify the originator or 
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> 
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> companies from whom this e-mail originates shall be liable 
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> information with us before placing any reliance upon it.
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> Northern Electric plc
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Argh! HowTo inetd ... script

2001-05-17 Thread Alex Perry

From: Alex
> [demime 0.97b removed an attachment of type application/octet-stream
> which had a name of DOVNC]
From: "Seth Kneller" <[EMAIL PROTECTED]>
Subject: RE: Argh!  HowTo inetd ...
> Nice Instructions, however, you should have pasted the script into the
> body of the message.
Sigh ... here it is.

#! /bin/bash
#
#   VNC spawning script
#   ===
#   (c) Quantum Magnetics 2001, GPL
#
##
#
# Find out which session

session=${1:-0}

if test $session -lt 0
thenexit 1
fi

if test $session -gt 0
thenjava="-httpd /usr/share/vncserver -httpport 580$session :$session"
logfile=/var/log/vnc-$session.log
elsejava="-inetd"
logfile=/dev/null
fi

##
#
# Do something sensible with log files

if test -f $logfile
thenif test -f $logfile.gz
thenrm -f $logfile.gz
fi
gzip $logfile
fi

##
#
# Find out which XDM to contact

case "$session" in
  2)
target="-indirect xdmserver"
;;
  1)
target="-query appserver"
;;
  *)
target="-query ${2:-localhost}"
;;
esac

##
#
# Actually start the server

exec /usr/bin/X11/Xvnc $target $java \
-geometry 800x600 -depth 16 -deferglyphs 16 -dpi 100 \
-dontdisconnect -nevershared -once -terminate \
2> $logfile
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asciicircum sent twice

2001-05-17 Thread Clemens Resanka

Hi all,

I'm using the latest windows vncviewer to view a linux desktop (Xvnc)
Everything works fine, except the asciicirum (^) key. When I press the
^ key it shows up twice (^^).

Now the strange part:
For testing I remap the keycode to x:
xmodmap -e "keycode  23 = x"

>From then on I get two capital Xs (XX), when I press the ^ key.
Can anyone explain this?

Since showkeys does not show anything with the -s flag, I conclude,
that I do not get scancodes. So I guess the windows-client remaps the
scancode to a keycode??

I'm using a german keymap. vncclient says it's keyboard 0407
Can this problem be solved with the -keyboard option?

So far..

 - Clemens -
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AW: Obtaining IP address over internet

2001-05-17 Thread oan

Go to http://www.no-ip.com there you can register and they are exactly your
solution (dynamic ip address). You can then download their client and he'll
update you're ip automatically.

oan

-Ursprungliche Nachricht-
Von: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]Im Auftrag von Steve Godfrey
Gesendet: Donnerstag, 17. Mai 2001 09:44
An: [EMAIL PROTECTED]
Betreff: Obtaining IP address over internet


I wank to VNC  to my home PC from work over the internet, My dial-up modem
connection is occasionally dropped and the IP address will change every time
the PC reconnects.  Any suggestion for obtaining my IP address remotely?

Thanks


Steve Godfrey
WAN Team
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Re: Obtaining IP address over internet

2001-05-17 Thread Jonathan D. Proulx

On Thu, May 17, 2001 at 01:11:38PM +0200, oan wrote:
:Go to http://www.no-ip.com there you can register and they are exactly your
:solution (dynamic ip address). You can then download their client and he'll
:update you're ip automatically.

On a similar note, I use http://www.dhs.org for my home machine.
Theye don't have theirown client, but there's several that user's have
contributed.

-Jon
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Re: remotely installing VNC

2001-05-17 Thread Ran Sasson

> For scripting it, I borrowed the password-encryption of the server code
and
> wrote a small command-line registry-setting program that will set a
> password in the registry (regedit can't do the correct data types for a
> .REG import), which is really handy.

where can it be found ?
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Re: Obtaining IP address over internet

2001-05-17 Thread Jim Millard

Steve,

>I wank to VNC  to my home PC from work over the internet, My dial-up modem
>connection is occasionally dropped and the IP address will change every time
>the PC reconnects.  Any suggestion for obtaining my IP address remotely?

Personally, I use the Tzolkin "dynamic DNS" service (http://www.tzo.com). 
The client came free with my Ugate-3000 broadband gateway, and the service 
is free for 1 year.
--
Jim Millard
Kansas City, MO  USA
http://www.millard.org/
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RE: vnc without screen update

2001-05-17 Thread Roger Campbell

We are building something similar for a training application.  The clients
(there will be many) are viewing the single server.  So, we are changing the
server to update without the client update request message.

Normally, the client runs a continuous loop that requests update, processes
update, then repeats.  So, there are both client and server changes to your
request.  The server needs to "push" updates without being requested and the
client needs to receive and process them without sending a request.  Our
solution involves making the server update by assuming a full update was
requested and then just having clients process the update as they receive
them.

Roger Campbell



-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of minou@ife
Sent: Wednesday, May 16, 2001 10:08 AM
To: [EMAIL PROTECTED]
Subject: vnc without screen update


Hello

At our institute we are interested in a version of vnc which does NOT update
the screen on the client side.
This because we have different machines sharing the same screen. As there
are no switchboxes for unix
and window keyboards we use VNC to share mouse and keyboard.

Hence we looked in the source files of WinServer and Unix/Linux-Clients.
Here we need some help.
Who can advice us, which part to change to disable the screen update. Where
would be the right
address to get some assistance?

Actually we are trying to figure out if we better change the WinServer of
the UnixClient. Is it right, that
the client triggers the screen update, so we could stop the triggering, or
does the server automatically
send screen update upon reception of keystrokes and mouse movements?

(of course we disabled all polling and use 8bit colors only)


Help would be very appreciated!


thank you
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Re: remotely installing VNC

2001-05-17 Thread Jim Millard

> > For scripting it, I borrowed the password-encryption of the server code and
> > wrote a small command-line registry-setting program that will set a
> > password in the registry (regedit can't do the correct data types for a
> > .REG import), which is really handy.
>
>where can it be found ?

Having written it for personal consumption (I didn't even know this list 
existed at the time, or I'd have asked if anyone already had something that
did the same thing!), I haven't made it publicly available.

I'll email it to you directly, under separate cover.
--
Jim Millard
Kansas City, MO  USA
http://www.millard.org/
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VNC vs Tridia

2001-05-17 Thread Jim Millard

Okay, I've seen many references to the two suites, but I'm looking for 
something more conclusive.

I see that Tridia has more encoding options (adding compression), but AT&T 
VNC is ported to more platforms. Fine. But as my primary use is 100% 
"wintel" << yeah, yeah, *nix is much better, but I'm a corporate IT guy 
that has to support an infrastructure of wintel boxes---cut me some slack, 
OK ;-) >> and both suites exist for that platform, I'd *really* like to 
know why some of you have mixed installations. Basically, if you're using 
Tridia to get better WAN/dialup inet performance, why keep AT&T VNC around 
for the LAN side? What's to be gained by a mixed VNC infrastructure?
--
Jim Millard
Kansas City, MO  USA
http://www.millard.org/
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omnithread_rt.dll

2001-05-17 Thread Jim Millard

I've been successful running WinVNC and omnithread_rt.dll in the same 
directory, rather than copying the DLL to %winroot%\system or 
%winroot%\system32.

Is there a good reason why the installer still insists on putting the DLL 
in the system directory?
--
Jim Millard
Kansas City, MO  USA
http://www.millard.org/
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RE: HELP me please, vnc on windows nt but the users always close the vnc client

2001-05-17 Thread Joe Campbell

Dan,

I'm looking for a way to run VNC in stealth mode so it doesn't appear on the
SysTray.
I'd rather not turn off the entire system tray.  Is that possible?
We are in an all Windows environment (win 95 clients and Win NT servers)

Joe Campbell
Express-1, Inc.
Buchanan, Michigan 49107
[EMAIL PROTECTED]

-Original Message-
From: Dan Frantz [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, May 16, 2001 3:06 PM
To: [EMAIL PROTECTED]
Subject: RE: HELP me please, vnc on windows nt but the users always
close the vnc client


Hey, what I did was a little in depth, but then again, I kind of taylor-fit
VNC to my needs. I work for a call center, and the supervisors wanted visual
monitoring capabilities. I proposed VNC, and they loved it. It had 3
problems though:
1) no simple way to disable password checking (without a dialog box warning
msg)
2) Users could exit VNC and/or kill all connected clients, mess
w/properties, etc
3) tray icon changed colours when people connected.

It was a bit tricky, but I got all three "problems" fixed.

1) Set "AuthRequired" to 0 so no password was necessary

2) A little more difficult, but I had first set it so no one could change
properties, then I made some registry changes using "AllowProperties" and
"AllowShutdown". Then I wised up, and discovered I can set it for certain
users to have access to shutting down and changing properties by specifying
them in the [HKEY_LOCAL_MACHINE\SOFTWARE\ORL\WinVNC3\] key. (I set
the whole IT dept up to be able to shutdown/change properties)

3) a bit more involved, but while editing the source so the silly "warning,
password blank, blah blah blah" warning dialog box didn't pop-up (it's
nested in an "if,then,else" statement...just remove the "else" part and it
compiles fine)I also changed the tray icon to be white at all times
(replaced the black/green icon with a copy of the normal icon)

Yeah, a bit more difficult and drawn out then what Jason Powell suggested,
but I wanted to keep the tray icon so I could quickly see who had VNC and
who did not :) If you want a copy of the regkeys I used, email me back

__
Dan Frantz, CNA
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Vnc server on Unix

2001-05-17 Thread Nicolas Sciboz

Hi !
Sorry for my english, i' m swiss-french !
I' ve a question, i start vncserver  ok !
i start vncviewer for windows, and i see only the terminal and not my
x-windows ?

Have you a idea for me ?

Thanks, Nicolas Sciboz
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Re: vnc without screen update

2001-05-17 Thread Grant McDorman

Look for x2vnc. It's fairly old, but it works fine. I am using it right now
to use the same (Unix) keyboard for a Solaris system and a Windows NT system
sitting on my desktop.

According to minou@ife:
> Hello
>
> At our institute we are interested in a version of vnc which does NOT
update
> the screen on the client side.
> This because we have different machines sharing the same screen. As there
> are no switchboxes for unix
> and window keyboards we use VNC to share mouse and keyboard.
>
> Hence we looked in the source files of WinServer and Unix/Linux-Clients.
> Here we need some help.
> Who can advice us, which part to change to disable the screen update. Where
> would be the right
> address to get some assistance?
>
> Actually we are trying to figure out if we better change the WinServer of
> the UnixClient. Is it right, that
> the client triggers the screen update, so we could stop the triggering, or
> does the server automatically
> send screen update upon reception of keystrokes and mouse movements?
>
> (of course we disabled all polling and use 8bit colors only)
>
>
> Help would be very appreciated!
>
>
> thank you
> -
> To unsubscribe, send a message with the line: unsubscribe vnc-list
> to [EMAIL PROTECTED]
> See also: http://www.uk.research.att.com/vnc/intouch.html
> -

--

Grant McDorman <[EMAIL PROTECTED]>, Sr. Software Design Consultant
Cedara Software Corp.  http://www.cedara.com>
  (formerly I.S.G. Technologies Inc.)
Mississauga, Ontario, Canada

[demime 0.97b removed an attachment of type application/pgp-signature]
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Re: VNC vs Tridia

2001-05-17 Thread Michael F. March

I use them both and since they interoperate very well, it does
not seem to be a pain to have them both around. 

On my Windows box, for instance, both versions of the client
share most of the same config and register settings so I can 
pop back and forth between both versions with little hassle.


> Okay, I've seen many references to the two suites, but I'm looking for 
> something more conclusive.
> 
> I see that Tridia has more encoding options (adding compression), but AT&T 
> VNC is ported to more platforms. Fine. But as my primary use is 100% 
> "wintel" << yeah, yeah, *nix is much better, but I'm a corporate IT guy 
> that has to support an infrastructure of wintel boxes---cut me some slack, 
> OK ;-) >> and both suites exist for that platform, I'd *really* like to 
> know why some of you have mixed installations. Basically, if you're using 
> Tridia to get better WAN/dialup inet performance, why keep AT&T VNC around 
> for the LAN side? What's to be gained by a mixed VNC infrastructure?
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re: nmap to port 6001 kills vnc session...

2001-05-17 Thread Scott C. Best

Mike:
Hello! I'm sorry that my suggestions don't sound
appealing to you. It sounds like you found a potential
weakness in a VNC system, but are dis-inclined to gather
more data about the particulars. My experience with open
source projects over the years is that the person who calls
in the fire is often expected to help aim the hose. :)
Regarding those real-world nmap scans, and those
port-53 DNS scans (the Lion worm, was it?) that securityfocus.com
reported as originating in China somewhere...there is, from 
my POV, a big difference. Certainly, I didn't mean to imply
that either of them is unimportant and shouldn't be worried
about. However, it is important IMO to distinguish between
the relative threat level, and that does include taking
stock of the frequency of occurrence. 
Like you, I get keyhole scanned several times a day, 
people looking for Sub-7 or RPC or whatever. In fact, my own
ISP scans me for running an NNTP server at least once a day. :) 
Yet...I don't think I've ever been nmap'd into a denial of 
service. Though there was that time when I unleased a Nessus 
scan on my firewall from www.vulnerabilities.org, just to see 
what'd happen. Ug.

Which gets to your original question: no, until your
post, I've never heard that Xvnc can be DoS'd with an nmap
scan. I'd be very much interested, as you would be, if that
could be confirmed. I don't run Xvnc here, so all the help
I can offer has been.
Good luck!

cheers,
Scott


On Thu, 17 May 2001, Mike Miller wrote:

> On Wed, 16 May 2001, Scott C. Best wrote:
> 
> > > If I run nmap on another machine as follows:
> > >
> > > nmap -p 6001 host.machine
> >
> > Instead of running nmap on all those ports (the -p ,
> > without the number, scans all the low numbered ports <1024, plus any
> > that come with the nmap config files) have you tried just running it
> > against the 5801/5901 ports?  That'd be interesting to see if it
> > crashed your Xvnc again.
> 
> I haven't tried it, but I don't like to crash it.  Maybe someone else can
> try it.
> 
> 
> > > This is a very serious problem because it means that a port scan will
> > > kill my VNC session.  This has happened to me more than once, but I
> > > didn't realize it until I scanned myself.  It means that anyone in the
> > > world can block my use of VNC.
> > >
> > > If there is some way I can protect myself, please let me know.
> >
> > Actually, in my experience, an nmap scan like this is rather
> > unlikely in the "real world".
> 
> Like you, I'm in the "real world."  It happens sometimes.  If by
> 'unlikely' you mean that it doesn't happen often, I agree.  If you mean
> "unlikely to happen ever," then I disagree.  Lately I've been getting
> scans like this from China.  As you suggested, they are not subtle.  I
> monitor several machines, so almost nothing seems subtle to me.  The fact
> that their activities are obvious doesn't seem to worry most of these
> attackers.
> 
> Yes, I could put up a firewall.
> 
> This brings me to my original question:  Is port 60xx DoS attack a known
> VNC problem?
> 
> (I'm not criticizing VNC.)
> 
> Mike
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Connecting to my (small) office network (ADSL problem?)

2001-05-17 Thread Jan Bletz

VNC is a great programme!

But: how can I connect to my office network? I have 3 computers,
permanently connected with ethernetcards and to the internet (an ADSL
connected). According to WIN VNC, my IP-address is 10.0.0.10,
194.109.244.216, 1.0.0.1 (the first computer in the network, that is). I am
not able to connect, for some reason. (I can reach the computer when it is
directly connected to the internet by modem).

I looked through the mailing list archives, but didn't find an answer. (Or
maybe I did, but didn't understand!) Maybe someone can help? Or do you know
of a programme I should use instead?

jan


--
"Half of what I say is meaningless, but I say it just to reach you..."

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Re: VNC vs Tridia

2001-05-17 Thread Mac Reiter

>> I see that Tridia has more encoding options (adding compression), but AT&T 
>> VNC is ported to more platforms. Fine. But as my primary use is 100% 
>> "wintel" << yeah, yeah, *nix is much better, but I'm a corporate IT guy 
>> that has to support an infrastructure of wintel boxes---cut me some slack, 
>> OK ;-) >> and both suites exist for that platform, I'd *really* like to 
>> know why some of you have mixed installations. Basically, if you're using 
>> Tridia to get better WAN/dialup inet performance, why keep AT&T VNC around 
>> for the LAN side? What's to be gained by a mixed VNC infrastructure?

Handy to have Tridia Server installed so that external/slow access can use
the Tridia Client and get compression.  Internal/fast access users will
probably prefer the floppy-sized AT&T installer (or, even better, simply
copying the ~115KB viewer executable) over the 5-6MB Tridia installer
(which also installs a Java runtime just to execute its install script, and
leaves it around so that it can execute its uninstall script later).
Technically, if you only want the viewer, the Tridia Client can also be
"installed" by simply copying the executable, but some people prefer to
have a "real" install program...

That's about the only thing I can think of.
Mac
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re: nmap to port 6001 kills vnc session...

2001-05-17 Thread Mike Miller

On Thu, 17 May 2001, Scott C. Best wrote:

>   Hello! I'm sorry that my suggestions don't sound appealing to
> you. It sounds like you found a potential weakness in a VNC system,
> but are dis-inclined to gather more data about the particulars. My
> experience with open source projects over the years is that the person
> who calls in the fire is often expected to help aim the hose. :)

I'm sorry that I seemed ungrateful.  I was hoping for one of the
developers to respond.  Thanks for getting back to me.

So I did what you wanted and tried nmap to 5801 and to 5901.  Neither had
any effect on the operation of Xvnc.  It's only 6001.

Now what I really mean is that VNC running on display :1 is destroyed when
I nmap port 6001, but VNC for display :7 is destroyed if I nmap port 6007.
What I mean by 'destroyed' is that if vncviewer was showing that display,
it immediately stops taking input, and if vncviewer wasn't up, it can no
longer connect to the server at all (for that display).


>   Like you, I get keyhole scanned several times a day, people
> looking for Sub-7 or RPC or whatever. In fact, my own ISP scans me for
> running an NNTP server at least once a day. :)  Yet...I don't think
> I've ever been nmap'd into a denial of service.

I have.  From China about two weeks ago.  They sent 30,214 packets.
(Maybe they checked that many ports, but my iplog doesn't keep track of
all of it.)  As you said, it was not subtle.  See appended info.  They
managed to crack into my machine, but in a fairly lame way (as daemon but
not as root), so I got rid of them easily.


>   Which gets to your original question: no, until your post, I've
> never heard that Xvnc can be DoS'd with an nmap scan. I'd be very much
> interested, as you would be, if that could be confirmed. I don't run
> Xvnc here, so all the help I can offer has been.

Thanks.

Mike


May  5 10:15:59 ICMP: echo from 202.103.98.115 (16 bytes)
May  5 10:15:59 TCP: tcpmux connection attempt from 202.103.98.115:4104
May  5 10:15:59 TCP: port 2 connection attempt from 202.103.98.115:4105
May  5 10:15:59 TCP: port 3 connection attempt from 202.103.98.115:4106
May  5 10:15:59 TCP: port 4 connection attempt from 202.103.98.115:4107
May  5 10:15:59 TCP: port 5 connection attempt from 202.103.98.115:4108
May  5 10:15:59 TCP: port 6 connection attempt from 202.103.98.115:4109
May  5 10:15:59 TCP: port 8 connection attempt from 202.103.98.115:4111
May  5 10:15:59 TCP: port 10 connection attempt from 202.103.98.115:4113
May  5 10:15:59 TCP: systat connection attempt from 202.103.98.115:4114
May  5 10:15:59 TCP: port 12 connection attempt from 202.103.98.115:4115
May  5 10:15:59 TCP: port 14 connection attempt from 202.103.98.115:4117
May  5 10:15:59 TCP: netstat connection attempt from 202.103.98.115:4118
May  5 10:15:59 TCP: port 16 connection attempt from 202.103.98.115:4119
May  5 10:15:59 TCP: port 18 connection attempt from 202.103.98.115:4121
May  5 10:15:59 TCP: port scan detected from 202.103.98.115
May  5 10:36:29 TCP: port scan mode expired for 202.103.98.115 - received a total of 
30214 packets (845992 bytes).
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Re: Connecting to my (small) office network (ADSL problem?)

2001-05-17 Thread Jim Millard

Jan,

>But: how can I connect to my office network? I have 3 computers,
>permanently connected with ethernetcards and to the internet (an ADSL
>connected). According to WIN VNC, my IP-address is 10.0.0.10,
>194.109.244.216, 1.0.0.1 (the first computer in the network, that is). I am
>not able to connect, for some reason. (I can reach the computer when it is
>directly connected to the internet by modem).

it's not clear how your office network is addressed, nor the connection or 
route between client and server machines (the 10.x.x.x address isn't 
publicly routed, and the 1.x.x.x isn't likely a legal one either).
--
Jim Millard
Kansas City, MO  USA
http://www.millard.org/
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Re: Connecting to my (small) office network (ADSL problem?)

2001-05-17 Thread Jan Bletz

Thank you!

But how do you find out what the right address is?!? According to my
provider, it is 194.109.244.216. But if I enter this address, VNC doesn't
find it.

That's progress for you!

jan

At 12:36 PM 5/17/2001 -0500, you wrote:
>Jan,
>
>>But: how can I connect to my office network? I have 3 computers,
>>permanently connected with ethernetcards and to the internet (an ADSL
>>connected). According to WIN VNC, my IP-address is 10.0.0.10,
>>194.109.244.216, 1.0.0.1 (the first computer in the network, that is). I am
>>not able to connect, for some reason. (I can reach the computer when it is
>>directly connected to the internet by modem).
>
>it's not clear how your office network is addressed, nor the connection or
>route between client and server machines (the 10.x.x.x address isn't
>publicly routed, and the 1.x.x.x isn't likely a legal one either).
>--
>Jim Millard
>Kansas City, MO  USA
>http://www.millard.org/
>-
>To unsubscribe, send a message with the line: unsubscribe vnc-list
>to [EMAIL PROTECTED]
>See also: http://www.uk.research.att.com/vnc/intouch.html
>-


--
"Half of what I say is meaningless, but I say it just to reach you..."

Werk:
Jan Bletz Teksten & Onderzoek/Info Pro
Vossiusstraat 50, 1071 AK Amsterdam
Tel: 020-4707444/0653-213324
Fax: 020-4707445
E-mail: [EMAIL PROTECTED]

Privi:
Zeeburgerkade 764, 1019 HT Amsterdam
Tel: 020-6635844
Fax: 020-4707445
E-mail: [EMAIL PROTECTED]

Info Pro: www.xs4all.nl/~jan, eYe: www.eyesite.nl, PartInvest:
www.partinvest.nl, Freeler: www.freeler.nl

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Re: Connecting to my (small) office network (ADSL problem?)

2001-05-17 Thread Jim Millard

Jan,

>But how do you find out what the right address is?!? According to my
>provider, it is 194.109.244.216. But if I enter this address, VNC doesn't
>find it.
>
>That's progress for you!

Which machine/device/host has the 194.109.x.x address? If your provider is 
giving it to you, then that's ONE address, although you mention 3 boxes in 
your first post. Is that address assigned to a broadband router, or your 
own machine (with a DSL "modem")? What's the IP of the other machines you 
mention? Are either one a machine you want to run the client from, or is 
there a 4th machine in the mix?

Before you worry about getting VNC to connect, you need to make sure that 
the machines in question can route to each other: can you ping from one to 
the other (and vice-versa)? Are there any firewalls or NAT/NPT'ing gateways 
that're filtering inbound traffic?
--
Jim Millard
Kansas City, MO  USA
http://www.millard.org/
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Re: nmap to port 6001 kills vnc session...

2001-05-17 Thread Michael Procter

Mike Miller wrote:

> On Wed, 16 May 2001, Scott C. Best wrote:
>
> > > If I run nmap on another machine as follows:
> > >
> > > nmap -p 6001 host.machine
> >
> >   Instead of running nmap on all those ports (the -p ,
> > without the number, scans all the low numbered ports <1024, plus any
> > that come with the nmap config files) have you tried just running it
> > against the 5801/5901 ports?  That'd be interesting to see if it
> > crashed your Xvnc again.
>
> I haven't tried it, but I don't like to crash it.  Maybe someone else can
> try it.
>

Mike, I did against a couple of my Linux boxes and had no problems, whether
the viewer was open or not.

>
> This brings me to my original question:  Is port 60xx DoS attack a known
> VNC problem?
>
> (I'm not criticizing VNC.)
>

Really, I've nmapped machines running vnc all the time -- that's how I
noticed I was running one I didn't aim to be running the other day.  I've
never seen one crash due to the nmap.  RPM tells me I have vnc-3.3.3r2-4 for
what it's worth.

Michael Procter
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Re: Connecting to my (small) office network (ADSL problem?)

2001-05-17 Thread Lee Allen

> But how do you find out what the right address is?!? According to my
> provider, it is 194.109.244.216. But if I enter this address, VNC doesn't
> find it.

If you have DSL, there is a very good chance you have a DSL modem/firewall.
And this device is probably performing NAT: Network Address translation.  If
that's the case, two things have to be done:
1) you have to know the real, public IP address of  your network (that may
be the 194.x.x.x address)
2) your DSL modem/firewall must recognize the incoming VNC connections and
redirect them to the internal IP addresses.

I think the first step is to go to your ISP and ask them your public IP
address(es), and whether you have NAT, and if so, whether your firewall can
be configured to redirect (aka port forwarding).

Quick explanation of NAT:
your PCs each have a unique IP address, often in the 192.168.0.x range (but
in your case probly the 10.0.0.x range)
your DSL router has two sides: a public (external) side and a private
(internal) side
on the public side it has a real public Internet IP address
on the private side it has a private ('fake') IP address in the same range
as your PCs (maybe 10.0.0.1)
for every packet going through the firewall, the firewall converts the IP
addresses public <--> private
this provides 2 benefits:
- even though you have 3 PCs your ISP only utilizes 1 IP address (and they
are becoming scarce)
- protection from crackers

Think of this like an office phone system.  You could have 100 different
internal numbers (extensions) but only 1 phone line.

-Lee Allen

> At 12:36 PM 5/17/2001 -0500, you wrote:
> >Jan,
> >
> >>But: how can I connect to my office network? I have 3 computers,
> >>permanently connected with ethernetcards and to the internet (an ADSL
> >>connected). According to WIN VNC, my IP-address is 10.0.0.10,
> >>194.109.244.216, 1.0.0.1 (the first computer in the network, that is). I
am
> >>not able to connect, for some reason. (I can reach the computer when it
is
> >>directly connected to the internet by modem).
> >
> >it's not clear how your office network is addressed, nor the connection
or
> >route between client and server machines (the 10.x.x.x address isn't
> >publicly routed, and the 1.x.x.x isn't likely a legal one either).
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Re: Connecting to my (small) office network (ADSL problem?)

2001-05-17 Thread Harmen van der Wal

Lee Allen wrote:
> 
> > But how do you find out what the right address is?!? According to my
> > provider, it is 194.109.244.216. But if I enter this address, VNC doesn't
> > find it.
> 
> If you have DSL, there is a very good chance you have a DSL modem/firewall.
> And this device is probably performing NAT: Network Address translation.  If
> that's the case, two things have to be done:
> 1) you have to know the real, public IP address of  your network (that may
> be the 194.x.x.x address)
> 2) your DSL modem/firewall must recognize the incoming VNC connections and
> redirect them to the internal IP addresses.
> 
> I think the first step is to go to your ISP and ask them your public IP
> address(es), and whether you have NAT, and if so, whether your firewall can
> be configured to redirect (aka port forwarding).
> 
> Quick explanation of NAT:
> your PCs each have a unique IP address, often in the 192.168.0.x range (but
> in your case probly the 10.0.0.x range)
> your DSL router has two sides: a public (external) side and a private
> (internal) side
> on the public side it has a real public Internet IP address
> on the private side it has a private ('fake') IP address in the same range
> as your PCs (maybe 10.0.0.1)
> for every packet going through the firewall, the firewall converts the IP
> addresses public <--> private
> this provides 2 benefits:
> - even though you have 3 PCs your ISP only utilizes 1 IP address (and they
> are becoming scarce)
> - protection from crackers
> 
> Think of this like an office phone system.  You could have 100 different
> internal numbers (extensions) but only 1 phone line.
> 
> -Lee Allen
> 
> > At 12:36 PM 5/17/2001 -0500, you wrote:
> > >Jan,
> > >
> > >>But: how can I connect to my office network? I have 3 computers,
> > >>permanently connected with ethernetcards and to the internet (an ADSL
> > >>connected). According to WIN VNC, my IP-address is 10.0.0.10,
> > >>194.109.244.216, 1.0.0.1 (the first computer in the network, that is). I
> am
> > >>not able to connect, for some reason. (I can reach the computer when it
> is
> > >>directly connected to the internet by modem).
> > >
> > >it's not clear how your office network is addressed, nor the connection
> or
> > >route between client and server machines (the 10.x.x.x address isn't
> > >publicly routed, and the 1.x.x.x isn't likely a legal one either).

Just guessing...

-|--|---ppp0
10.0.0.138 10.0.0.xxx194.109.244.216
adsl modem eth0

   192.1.0.xxx (LAN)
   eth1

Ok, I'm not that smart: this is what I have.

An account with 4 (routable) IP adresses is also possible (adsl fast
old? style).

Jan, I think you should bind WinVNC to the dial-up interface.

-- 
Harmen
http://www1.tip.nl/~t515027/
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Re: nmap to port 6001 kills vnc session...

2001-05-17 Thread Mike Miller

On Thu, 17 May 2001, Michael Procter wrote:

> Mike, I did against a couple of my Linux boxes and had no problems,
> whether the viewer was open or not.

Thanks.  I tried a different Sun and it did *not* crash.  That Sun is
running Solaris 2.5.1 while the others were running Solaris 2.6.  All
machines are running Xvnc v3.3.3, so I guess it's a problem with Solaris
2.6, unless it's a difference in something that was used to compile Xvnc.
I think I compiled all of the Xvncs myself.


> Really, I've nmapped machines running vnc all the time -- that's how I
> noticed I was running one I didn't aim to be running the other day.
> I've never seen one crash due to the nmap.  RPM tells me I have
> vnc-3.3.3r2-4 for what it's worth.

Thanks.  I guess it's a Solaris 2.6 problem.  I'll let you all know if I
ever figure out more than that.

Regards,

Mike
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Re: Connecting to my (small) office network (ADSL problem?)

2001-05-17 Thread Harmen van der Wal

Harmen van der Wal wrote:
> 
> Jan, I think you should bind WinVNC to the dial-up interface.
> 

Sorry, that is probably incorrect. Please ignore.

-- 
Harmen
http://www1.tip.nl/~t515027/
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RE: HELP me please, vnc on windows nt but the users always close the vnc client

2001-05-17 Thread William Arbuckle

TridaVNC does this..



FYI
William
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Re: nmap to port 6001 kills vnc session...

2001-05-17 Thread Grant McDorman

600x is the X server port. It has known vunerabilities (XFree86, for example
had a simple one-packet DoS attack on its port; this is probably still
present in Xvnc, since it's based on XFree86).

The X security is not very strong, either; what's more, people often turn it
off (the command 'xhost +').

Unless you are sending X traffic through the Internet, I would suggest that
you do not open those ports through your firewall. You certainly don't need
them open if you're using only a VNC viewer remotely.

According to Mike Miller:
> On Thu, 17 May 2001, Scott C. Best wrote:
>
> > Hello! I'm sorry that my suggestions don't sound appealing to
> > you. It sounds like you found a potential weakness in a VNC system,
> > but are dis-inclined to gather more data about the particulars. My
> > experience with open source projects over the years is that the person
> > who calls in the fire is often expected to help aim the hose. :)
>
> I'm sorry that I seemed ungrateful.  I was hoping for one of the
> developers to respond.  Thanks for getting back to me.
>
> So I did what you wanted and tried nmap to 5801 and to 5901.  Neither had
> any effect on the operation of Xvnc.  It's only 6001.
>
> Now what I really mean is that VNC running on display :1 is destroyed when
> I nmap port 6001, but VNC for display :7 is destroyed if I nmap port 6007.
> What I mean by 'destroyed' is that if vncviewer was showing that display,
> it immediately stops taking input, and if vncviewer wasn't up, it can no
> longer connect to the server at all (for that display).
>
>
> > Like you, I get keyhole scanned several times a day, people
> > looking for Sub-7 or RPC or whatever. In fact, my own ISP scans me for
> > running an NNTP server at least once a day. :)  Yet...I don't think
> > I've ever been nmap'd into a denial of service.
>
> I have.  From China about two weeks ago.  They sent 30,214 packets.
> (Maybe they checked that many ports, but my iplog doesn't keep track of
> all of it.)  As you said, it was not subtle.  See appended info.  They
> managed to crack into my machine, but in a fairly lame way (as daemon but
> not as root), so I got rid of them easily.
>
>
> > Which gets to your original question: no, until your post, I've
> > never heard that Xvnc can be DoS'd with an nmap scan. I'd be very much
> > interested, as you would be, if that could be confirmed. I don't run
> > Xvnc here, so all the help I can offer has been.
>
> Thanks.
>
> Mike
>
>
> May  5 10:15:59 ICMP: echo from 202.103.98.115 (16 bytes)
> May  5 10:15:59 TCP: tcpmux connection attempt from 202.103.98.115:4104
> May  5 10:15:59 TCP: port 2 connection attempt from 202.103.98.115:4105
> May  5 10:15:59 TCP: port 3 connection attempt from 202.103.98.115:4106
> May  5 10:15:59 TCP: port 4 connection attempt from 202.103.98.115:4107
> May  5 10:15:59 TCP: port 5 connection attempt from 202.103.98.115:4108
> May  5 10:15:59 TCP: port 6 connection attempt from 202.103.98.115:4109
> May  5 10:15:59 TCP: port 8 connection attempt from 202.103.98.115:4111
> May  5 10:15:59 TCP: port 10 connection attempt from 202.103.98.115:4113
> May  5 10:15:59 TCP: systat connection attempt from 202.103.98.115:4114
> May  5 10:15:59 TCP: port 12 connection attempt from 202.103.98.115:4115
> May  5 10:15:59 TCP: port 14 connection attempt from 202.103.98.115:4117
> May  5 10:15:59 TCP: netstat connection attempt from 202.103.98.115:4118
> May  5 10:15:59 TCP: port 16 connection attempt from 202.103.98.115:4119
> May  5 10:15:59 TCP: port 18 connection attempt from 202.103.98.115:4121
> May  5 10:15:59 TCP: port scan detected from 202.103.98.115
> May  5 10:36:29 TCP: port scan mode expired for 202.103.98.115 - received a
total of 30214 packets (845992 bytes).
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--

-Grant "Kamisama" McDorman, Senor Software Design Tipster[1], Advanced
AppleCations

 [1] Consultant: A tipster disguised as an oracle, especially one who
 has learned to decamp at high speed in spite of the
 large briefcase and heavy wallet.
- Stan Kelly-Bootle, _The Devil's DP Dictionary_

Fortune Cookie of the Moment:
People will accept your ideas much more readily if you tell them that
Benjamin Franklin said it first.

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How to install VNC on remote machine

2001-05-17 Thread Bo Berglund

I need to install a GUI interface to a W2000 Pro machine so I can administrate
it remotely.
I think that VNC will be possible to use, since I cannot use Terminal Server
because the machine is a workstation and not a server.
The problem I have is that it is 6000 miles away and I can only get to it
through a VPN tunnel over the Internet. I have already installed Remote
Console so I can get to a command prompt on that machine and I can map drive
letters to the admin shares C$ and D$.
So basically I can do whatever is possible in the way of copying files and
giving command line commands.

But I cannot run an InstallShield setup.exe program to get the VNC server
installed, because that is a GUI thing. Catch 22!

So my question is:
Is it possible to install the VNC server on that machine without physically
travelling overseas to its keyboard?
If so, how is it accomplished??

Obviously I am the admin of that machine.

/Bo Berglund
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RedHat 7.0 and VNC

2001-05-17 Thread Brian Street

Hello,

The problems continue ...

I've managed to get VNC running on Solaris 8 and RedHat 6.2 and still have
Solaris 2.6 and RedHat 7.0.

I haven't started the Solaris 2.6 yet, but the RedHat 7.0 machine is giving
me quite the fits.

RedHat 7.0 is running xinetd and I converted my inetd.conf entry to the
xinetd format with a script inetdconvert. I'm unable to resolve the
"invalid protocol" error.

I thought I saw a post about IPv6 causing this problem but am unable to
locate it. Am I headed in the right direction?

Thanks,
Brian Street.
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Re: Obtaining IP address over internet

2001-05-17 Thread Rob Cornelius

Try a free e-mailing client that can sent a e-mail message to you with your 
ip address.  you can have your pc create a text file with the ip address by 
using the command /? at the end of the winipcfg or ipconfig command.

Use the > symbol followed by the file name you want created:

for example dir >c:\dir.txt will create the text file showing the directory 
list

Rob


>From: "Steve Godfrey" <[EMAIL PROTECTED]>
>Reply-To: [EMAIL PROTECTED]
>To: <[EMAIL PROTECTED]>
>Subject: Obtaining IP address over internet
>Date: Thu, 17 May 2001 08:44:00 +0100
>
>I wank to VNC  to my home PC from work over the internet, My dial-up modem
>connection is occasionally dropped and the IP address will change every 
>time
>the PC reconnects.  Any suggestion for obtaining my IP address remotely?
>
>Thanks
>
>
>Steve Godfrey
>WAN Team
>-
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>to [EMAIL PROTECTED]
>See also: http://www.uk.research.att.com/vnc/intouch.html
>-

_
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Re: How to install VNC on remote machine

2001-05-17 Thread Jim Millard

>So my question is:
>Is it possible to install the VNC server on that machine without physically
>travelling overseas to its keyboard?
>If so, how is it accomplished??

1) install the package to your own local machine
2) start the WinVNC server with the password you want on the remote machine
3) copy the contents of the local directory to the remote machine
4) copy %windir%\system32\omnithread_rt.dll to the remote machine
5) on the remote console, run "winvnc -install" (no quotes)
6) using regedt32, open the remote machine's registry and copy *exactly* 
the following registry entry from your box (you'll have to create some keys):
 Key: HKLM\SOFTWARE\ORL\WinVNC3\Default
 Value: Password
 Type: BINARY
 Content: password hash from your machine
7) on the remote console, run 'net start "vnc server"'

It should let you connect just fine. You'll end up with all the defaults 
because the only thing you "pre set" was the password, but once you're on 
it via GUI, you can further refine the settings using the GUI dialog box.


>Obviously I am the admin of that machine.
>
>/Bo Berglund
>-
>To unsubscribe, send a message with the line: unsubscribe vnc-list
>to [EMAIL PROTECTED]
>See also: http://www.uk.research.att.com/vnc/intouch.html
>-

--
Jim Millard
+--+
Kansas City, MO  http://www.millard.org/
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Re: Obtaining IP address over internet

2001-05-17 Thread Mike Miller

On Thu, 17 May 2001, Rob Cornelius wrote:

> Try a free e-mailing client that can sent a e-mail message to you with
> your ip address.  you can have your pc create a text file with the ip
> address by using the command /? at the end of the winipcfg or ipconfig
> command.
>
> Use the > symbol followed by the file name you want created:
>
> for example dir >c:\dir.txt will create the text file showing the
> directory list


On Win98 (what I'm using), I'd have to use this command:

winipcfg /Batch c:\dir.txt

the /? is not supported, but with /Batch, no redirection is needed, it
goes straight to the file.  If no name is given, it goes to winipcfg.out
in the default directory.

Mike
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