Tim Horn wrote:
I have tried PCAnywhere and VNC ver 4.0 and both do the same thing - When I
dial up the host crashes, requiring a hard reboot.

I have three PC running a process plant in Botswana which I need to provide
remote support to from Johannesburg South Africa.

I test both PCanywhere and VNC on the network, and the remote takeover of
the screen and mouse works. The moment I connect my notebook to them via
RAS(for VNC),
the host crashes. PCAnywhere's dialup also crashes the host on connect.

All the host PC running XP Pro SP1, with DHCP enabled and not configured IP
addresses. My notebook is also running XP Pro SP1, with not IP on the
network card or dial up.

When I connect the notebook to the network, using the same network settings
as the hosts, PCanywhere and VNC work 100%.

I have tried to get Remote Assistance and Remote Desktop to work, but I
can't get the network people to open the port 3389 of the firewall for me,
so I don't think I will get them to open ports 5800+ or 5900+.

Questions:
Question 1: When I take out the network cable, how do I dial up to the
hosts. I assume I use RAS  - or what ??

Typically over RAS you still receive a TCP/IP address, given to you by the RAS server you dial into. If you dial directly into the remote pc, then each of you will receive an TCP/IP address. When you are connected you can open a cmd.exe or command.exe window and run "ipconfig /all" which will tell you the ip address. Have you tried to use this ip address for the "server:" field when you open VNC Viewer? (I am getting the impression that this is where you are receiving crashes, but I'd like to make sure)



Question 2: Do I have to disable Fast User Switching ?

This is recommend according to several different VNC faqs, if you have problems connecting over vnc to a Windows XP machine.



Question 3: Do I have to disable Remote Desktop/Assistance ?

I don't know on this one, I've never had to do this.


Question 4: DO I have to setup LMHOSTS for the host name to be resolved ?

I would say don't do this. LMHOSTS is old and outdated for one thing, and if you connect over RAS chances are you won't get the same TCP/IP adderss every time you dial in. If you can be assured you will get the same TCP/IP address then edit the "hosts" file, found in the C:/WINNT/system32/drivers/etc/ directory. (Note that the "C:/WINNT" may be "C:/WINDOWS" on some Windows XP machines)



Question : HELP!!!!

Another thing to note, if you're network people won't open up port 3389 for Remote Desktop Assistance, ask them if they would open up port 22 for Secure Socket Shell (SSH) access. And see if you can get SSH installed on those machines. (see http://sshwindows.sourceforge.net/) If they agree to SSH then tunneling over port 22 to use port 5900 or 5800 will most likely do the trick.


Please note I don't use VNC over dialup and I don't recommend it. Just a few suggestions...

I hope this response becomes helpful to your need...

Zach
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