I just got this working:

ipmasqadm portfw -d -P tcp -L 24.29.255.187 80 -R 192.168.1.22 5800

forwards everything from port 80 on linux box to port 5800 on an internal
machine.

really cool.

Carl Karsten

----- Original Message -----
From: "Steve Russo" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Cc: "Technical Staff" <[EMAIL PROTECTED]>
Sent: Tuesday, March 06, 2001 4:14 PM
Subject: VNC Ports and firewalling.


> Hello, I would like to use VNC for some online training but we are running
> into firewalling issues. The problem stems from VNC using only ports 58xx.
> Most corporations and people in the know will block all ports except for a
> few given ones like httpd etc,etc, into their network (duh, tell us
> something we don't know.).
>
> Well, I want these people to train. I don't mind using port 80 as the
> incoming port, but this will only allow me ONE connection to this VNC
server
> (It's running Linux so the sky is the limit of course).
>
> My question is this:
>
> Has anyone found a way around the firewalling issues? (Besides asking said
> client to open ports on their firewall?).
>
> If so, what did you do? Did you run into any problems with proxy servers?
If
> not, read on.
>
> I have been working with Apache lately to setup virtual hosts. The Apache
> server will figure out WHERE the connection is going to and forward that
> connection to the appropriate "server"
> . What about doing something like this with mmtcpfwd (Linux port
forwarding
> utility)? Has anyone thought of the virtual hosts idea for VNC?
>
> Maybe a firewall that takes in port 80 from the outside and forwards it to
> 58xx on the inside.
>
> Maybe this is as easy as setting up mmtcpfwd?
>
> Any ideas are appreciated.
>
> Thanks,
>
> Steve
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