Accessing Printer Behind NAT

[Fred]

Thanks for the clue.  The trick was to not use the raw driver, which, as you imply is not a "real" printer driver.  When I deleted the printer on the "gateway" system and added the printer using one of the Samsung drivers, I got things to work, somewhat.

The printer is a CLP-510.  The gateway system didn't have a driver for that model, so I installed the unified driver software which includes a driver for the CLP-510.  However, that driver doesn't work on the gateway system, which is running Fedora FC16 x86_64.  I then tried a driver for the CLP-550 PS driver.  None of the SPLC drivers work in this setup, just the PS drivers.  The problem now is that while printing works, the colors are somewhat screwed up, but it at least does print.  (Also, the WLAN machine which the printer is physically connected to is still running FC14, so maybe when that machine is upgraded, the CLP-510 driver will break.  That machine is an i386 machine not a x86_64 machine, so maybe the driver doesn't work on 64 bit OS.)

I believe that prior to the gateway system upgrade, the remote systems used a raw driver configuration, which now will not work.

Referring to your prior mention "By design, you can't re-share a shared printer. ", I guess I have to ask, why not?  The gateway system setup that I want amounts to using that system as a proxy.  What's wrong with that?  I realize that I don't understand enough about the CUPS design philosophy, but from a practical standpoint, allowing a proxy configuration is very useful.

Thank you for helping me on this.

Fred


> What you'd need to do is add a printer on the "gateway" system using a real printer driver and then share that printer out.
>
> Also, make sure you allow "ipp" access (TCP port 631) through your firewall on the gateway machine...
>
>
> On Feb 11, 2012, at 8:50 PM, Fred wrote:
>
> > Well I did get it to work once, and it worked before I upgraded the firewall system from FC14 to FC16.  Any suggestions on how to accomplice what i need to do?
> >
> > Thanks for the reply.
> >
> > Fred
> >
> >> By design, you can't re-share a shared printer.
> >>
> >>
> >> On Feb 11, 2012, at 7:28 PM, Fred wrote:
> >>
> >>> I have a local network on a NAT interface.  A firewall machine connects the NAT network (WLAN) to an outward network (LAN).  I created a virtual printer on the firewall machine using IPP which points to a remote printer on one machine on the WLAN network.  I can print from the firewall machine to the remote printer OK.
> >>>
> >>> However, what I need to be able to do is print from a machine on the LAN network to the printer on the WLAN network.  When I set up a printer definition on the LAN machine pointing to the virtual printer on the firewall, it seems to be work, but then when I try to print, it fails.  The CUPS error file shows an error #0700: server-error-not-accepting-jobs.
> >>>
> >>> Another thing I noticed while trying all sorts of things was that the virtual printer keeps getting the "sharing" disabled.  I actually got it working once, but then I continued to tinker with things and now can't get the LAN side to print to the WLAN printer.  I have ruled out any firewall issues.
> >>>
> >>> I could use some more clues.
> >>>
> >>> TIA
> >>>
> >>> Fred
> >>>
> >>>
> >>>
> >>> _______________________________________________
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> >>> cups at easysw.com
> >>> http://lists.easysw.com/mailman/listinfo/cups
> >>
> >> _________________________________________________________
> >> Michael Sweet, Senior Printing System Engineer, PWG Chair
> >>
> >
> > _______________________________________________
> > cups mailing list
> > cups at easysw.com
> > http://lists.easysw.com/mailman/listinfo/cups
>
> _________________________________________________________
> Michael Sweet, Senior Printing System Engineer, PWG Chair
>