On 27 June 2011 07:38, Nico Kadel-Garcia <[log in to unmask]> wrote:

>
> Ahhhh. I think I see the issue. CUPS chose, years ago, to use the old
> port 631, formerly used by lpr, for their configuration interface.
> After all, they seemed to reason, it's available for printing and no
> one will use lpr anymore, right? Unfortunately, some people do, and I
> suspect your printing command is feeding it to the CUPS configuration
> interface. Not deliberately: the setting can be enabled and disabled.
> Use "system-config-printer" to do this, if Fedora hasn't changed
> things lately.
>

I'll have to check to see if I'm close to being correct but I thought..

515 - Lpr
631 - IPP
9100 - HP "jetdirect"

Probably more out there.