[FreeNX-kNX] FreeNX server behind NAT

[Leon Bukhman]

Thanks for your help Doug.

I have been using SSH on both ports for several years so i don't think that is 
a problem. And I have tested running FreeNX on both ports across my network 
at home. Enabling SSH for all traffic does fix the NAT problem. However, 
there seems to be something in the firewall at my work that blocks the 
connection from being established (the NX Client gives no error messages why 
it failed) It looks like if fails before the authentication stage. I find 
this a bit strange since i can SSH from work without a problem.

I'll try again on Monday. Maybe I'll have better luck.

Has anyone tried FreeNX from behind a "strong" corporate firewall?

Leon

On Saturday 02 October 2004 10:34 am, Doug Burks wrote:
> Hi Leon,
>
> The easiest way to do this is to make sure that "Enable SSL encryption
> of all traffic" is checked (enabled) on the NX client.  This forces NX
> to use SSH for all of its communication.   So then the trick is to
> make sure that you can SSH to the FreeNX server.  As long as you can
> do that, then you should be able to establish a FreeNX session.
>
> You say that you have configured SSH to accept connections on port 22
> and 23; have you tried actually connecting to both ports to verify
> that this works?  If so, then fire up your NX client, click the
> Configure button, set Port to 23 (on the General tab), and make sure
> that "Enable SSL encryption of all traffic" is checked (on the
> Advanced tab).  Then try logging in.
>
> If it doesn't work, you might try editing /usr/bin/nxserver and changing:
> SSHD_AUTH_PORT="22"
> to:
> SSHD_AUTH_PORT="23"
> and see if that helps.
>
> Let us know how it goes.
>
> Thanks,
> Doug
>
> On Wed, 29 Sep 2004 17:08:00 -0400 (EDT), Leon Bukhman <leon at lbsharp.com> 
wrote:
> > I am trying to connect to my FreeNX server from work but I am having
> > problems establishing the connection. The problem is that the server is
> > behind a NAT box and the client is also behind a firewall (which blocks
> > port 22).
> >
> > I set up SSH to accept connections of ports 22 and 23 so that I can
> > connect from work. Is there a way to configure FreeNX to listen on both
> > ports as well?
> >
> > Also, since the server is behind a NAT box, what is the minimum number of
> > ports that I would need to forward to get it working? (Is it enough to
> > just forward port 5000? And how can I change which port ranges are used
> > by NX?)
> >
> > Thanks in advance
> >
> > Leon
> >
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