On 1/18/23 2:46 PM, Robert Marcano wrote:
On 1/17/23 8:19 AM, Zdenek Dohnal wrote:
Well in a matter of speaking this is doable even without IPP-USB
advertised device. Every application can just send data to printer's
port and IP or get USB interface handler and talk with the device via
USB. Even an application which implements IPP client can omit CUPS and
talk with IPP printer directly. In cases where application generates a
printer ready file (f.e. in PCL format) which have all user's option
applied already is desired to bypass CUPS and talk with the printer -
I've heard there are such applications already bypassing CUPS, because
they want to pass such a file.
So it is not something uncommon in my opinion.
Forgot to add this:
USB device access can be protected with filesystems permissions, so it
is possible to protect direct access if some installation requires it.
Way easier than firewall rules IMHO.
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