Using a proxy to do outgoing connections?
miroslav_luptak "at" hp.com
Mon Jun 24 08:16:01 2002
As you are going to traverse the Internet, you should tunnel the VNC over
SSH. So if you find an SSH client supporting HTTP Proxy, you can do what you
want to do. And yes, there is such a SSH client. It's Mindterm. It supports
HTTP Proxy, Socks and has many nice features. The last free version of
Mindterm was 2.1, then the authors turned it to commercial. I can send you
off-line the free version.
> -----Original Message-----
> From: C U [mailto:cylot "at" hotmail.com]
> Sent: Sunday, June 23, 2002 0:30
> To: vnc-list "at" realvnc.com
> Cc: cbeerse "at" hiscom.nl
> Subject: RE: Using a proxy to do outgoing connections?
> Thanks for the information!
> I checked the archives and from what I can see, one must tell the
> proxyserver to map a specific port to another port at the IP
> where the VNC
> server is.
> If that is the only way to do it, then I am lost. I do not
> have access to
> the proxyserver to do such mappings.
> I was under the impression that I could use VNC like a web
> browser, i.e. I
> enter the address of the proxyserver in the VNC viewer and
> then use VNC
> viewer just as normal (using port 80). By doing so, the VNC
> traffic would
> look just like any other webtraffic passing through the firewall.
> Just to make sure we dont misunderstand each other, I have
> attached a small
> JPG that displays what I want to do. If this list filters
> attachments, is is
> also available at http://hem.passagen.se/cylot/vnc.jpg
> Please anybody, let me know if VNC can help me at all.
> The most optimal thing would ofcourse be to use some sort of
> encryption (SSL
> on port 443 maybe?) between the viewer and the server but I
> would be happy
> to just being able to use VNC at all under the network
> circumstances that I
> work in today.
> Thanks for your help!
> Best regards
> > > -----Original Message-----
> > > > I am trying to run the VNC Win32 wiever application on a Windows
> > > 2000 computer to access a Win32 VNC server running on another
> > > Windows 2000 computer. The thing that gives me problem is that the
> > > viewer mashine is behind a firewall and the only outgoing
> > > connections that is allowed is port 21, 80 and 443. So obviously I
> > > configured the VNC to work on port 80 but it still does
> not work. It
> > > turned out to be that the firewall is a proxy as well (running on
> > > port 8080) and all outgoing traffic has to go through it.
> From what
> > > I can see, it is not possible to configure the VNC viewer to work
> > > through a proxy (just like you do in your webbrowser), or am i
> > > mistaken?
> >It has been asked before and answered too. Have you checked the
> >archives? I recal recently answering a similar question.
> >Some points:
> >Watch out for used ports: they cannot be used twice, that will cause
> >troubles. vnc uses ports in 5900, 5800 and (Unix/X11) 6000
> range: 5900
> >(add display number for real port) is for the rfb protocol (the vnc
> >communication, you want this) 5800 (add display number for real port)
> >is to serve the java applet, you don't need it if you use vncviewer
> >binary. 6000 (add display number for real port) is for Unix/X11
> >communication, only local communication, you don't want this trough
> >the firewall.
> > > > Note that I do not want from the outside view the
> computer inside
> > > the firewall, I just want to use the viewer from the inside to do
> > > outgoing connections on port 80, just like any websurf or FTP that
> > > already is allowed to do through the firewall/proxy.
> >Scan the archives for details.
> >First setup a local situation using port 21 (most likely not to be
> >used). Don't bother the route trough the firewall (inbound or
> >outbound), the restrictions are most times the same, if not, outbound
> >is lighter/easyer to pass.
> Chat with friends online, try MSN Messenger: http://messenger.msn.com
> [demime 0.99c.8 removed an attachment of type image/pjpeg
> which had a name of vnc.jpg]
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