Eric Shubert wrote:
> Trent Shipley wrote:
>> GK wrote:
>>> Hey.
>>>
>>> HP's usually need the hplip and hpijs ppds. Throwing ing cups-pdf,
>>> gutenprint won't hurt either.
>>>
>>> V
>>>
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>> It prints fine as long as I turn off the firewall.  I'm managing the
>> firewall using KDE's Guarddog GUI tool.  There is some protocol that
>> needs to be enabled for the dang thing to work.  Someone had mentioned
>> opening port 9100.
> 
> I print to various network printers (HP included) from a firewalled 
> server. I have ipp (port 631) open for both tcp and udp.
> (wasn't that port mentioned already?)
> I have it configured with:
> Device URI: socket://hostname
> The hostname is resolvable via local dns. You could hard code an ip 
> address in its place if you like.
> 
I opened port 631.  Nothing.
Then I opened 9100 and it printed.

So 631 doesn't work. 631 & 9100 works. I'm too lazy to see if 9100 would
work.
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