Good evening all,
I'm using VNC to connect to a specific server on a remote LAN from many
different clients at many different locations. However, using the same
machine on one network vs. another, I'm either able to get into the server
in question fine or I get a black screen with no visual. The mouse is moving
on the server and a hard connection is made, but the client only gets a
black screen. IE: Using a single laptop, I can get connected instantly from
one LAN with no issues, yet from another LAN, black screen. I'm also able to
connect from different machines on the LAN's that work. All machines in
question thus far have been XP Pro, SP2, RDP & User Switching off (neither
of which really matter anyways, since I am indeed able to connect using the
same machine(s) from one network but not another). Also, the server in
question is behind a VPN router with port forwarding to 5900 on (hence our
being able to connect to begin with). I've even gone to lengths of messing
with the MTU & RWIN settings and used the TCP/IP Optimizer off from
SpeedGuide.net...all to no avail.
I've searched many lists and Google high and low for answers to this
issue. As I'm sure you well know, this issue has been an issue for many
years with VNC, but I haven't been able to find any definitive answers by
the VNC folks or others. Most of the answers I've found were merely
suggestions that appeared to be just shots in the dark (simply my perception
based on verbiage). In my humble opinion, if this is to be a viable product,
then this issue needs to be addressed once and for all, being put under the
VNC FAQ's since it is most certainly a FAQ on every list I've found,
regardless of the domain I've found the issue listed on. But I've found
everything from simple answers to uber-geek answers, none of which have
helped and none of which I've been able to find on the VNC site.
I very humbly state, if RealVNC, Ltd. expects me, my company and my
clients to drop cash for the Enterprise versions of this software, then
someone needs to show me that the tool will work from anywhere around the
world with an internet connection if I go with it. I'm using the free one
now as a POC. But thus far, things have been problematic at best, and I've
not been able to find any viable solutions from the VNC technical community
at large.
I would very much appreciate any help you all can lend.
Boyd Campbell
Systems Architect
Aspect Data Systems, Inc.
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