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PAPD(8) 										  PAPD(8)

       papd - AppleTalk print server daemon

       /usr/sbin/papd [ -d ] [ -f configfile ] [ -p printcap ]

       papd  is  the  AppleTalk  printer  daemon.   This daemon accepts print jobs from AppleTalk
       clients (typically Macintosh computers) using the Printer  Access  Protocol  (PAP).   papd
       spools jobs directly into an lpd(8) spool directory and wakes up lpd after accepting a job
       from the network to have it re-examine the appropriate spool directory.	The actual print-
       ing  and  spooling  is  handled	entirely  by lpd.  papd can also pipe the print job to an
       external program for processing, and this is the preferred method to  avoid  compatibility
       problems with all the flavors of lpd in use.

       papd  is  typically started at boot time, out of system init scripts.  It first reads from
       its configuration file,	/etc/atalk//papd.conf.	 The  file  is	in  the  same  format  as
       /etc/printcap.	See  printcap(5)  for  details.  The name of the entry is registered with
       NBP.  The following options are supported:

       Name   Type   Default	  Descripton
	pd    str    `.ppd'	  Pathname to PPD file
	pr    str    `lp'	  LPD printer name (or print command)
	op    str    `operator'   Operator name for LPD spooling
	ca    str    NULL	  Pathname used for CAP-style authentication
	sp    bool   false	  PSSP-style authentication
	am    str    NULL	  UAMS to use for authentication
	pa    str    NULL	  Printer's AppleTalk address?

       If no configuration file is given, the hostname of the machine is used as the NBP name and
       all options take their default value.

       -d     Do not fork or disassociate from the terminal.  Write some debugging information to

       -f configfile
	      Consult configfile instead of /etc/atalk//papd.conf for the configuration  informa-

       -p printcap
	      Consult printcap instead of /etc/printcap for LPD configuration information.

       The  following papd configuration file sets up three print spoolers.  The first spooler is
       known  by  the  NBP  name  Mac  Printer	Spooler,  and  uses  a	PPD   file   located   in
       /usr/share/lib/ppd.   In  addition,  the  user  mcs will be the owner of all jobs that are
       spooled.  The second spooler is known as HP Printer and all options are the  default.  The
       third  spooler  is  known  as HP 8100 .	It pipes the print job to lpr for printing.  PSSP
       authenticated printing is enabled, as is CAP-style authenticated printing.   Both  methods
       support	guest and cleartext authentication as specified by the 'am' option.  The PPD used
       is /etc/atalk/ppds/hp8100.ppd.

	      Mac Printer Spooler:\

	      HP Printer:\

	      HP 8100:\
		  :pr=|/usr/bin/lpr -Plp:\

       PSSP (Print Server Security Protocol) is an authentication protocol  carried  out  through
       postscript  printer queries to the print server.  Using PSSP requires LaserWriter 8.6.1 or
       greater on the client mac.  The user will be prompted to enter their username and password
       before  they  print.  It may be necessary to re-setup the printer on each client the first
       time PSSP is enabled, so that the client can figure out that authentication is required to
       print.	You  can  enable  PSSP on a per-printer basis.	PSSP is the recommended method of
       authenticating printers as it is more  robust  that  CAP-style  authentication,	described

       CAP-style  authentication gets its name from the method the CAP (Columbia APpletalk) pack-
       age used to authenticate its mac clients' printing.  This  method  requires  that  a  user
       login  to  a  file share before they print.  afpd records the username in a temporary file
       named after the clients Appletalk address, and it deletes the temporary file when the user
       disconnects.   papd gets the username from the file with the same Appletalk address as the
       machine connecting to it.  CAP-style authentication will work with any mac  client.   CAP-
       style  authenticated printing is a compile-time option for netatalk.  If both CAP and PSSP
       are enabled for a particular printer, CAP will be tried first, then it will fall  back  to

       The list of UAMS to use for authentication (specified with the 'am' option) applies to all
       printers.  It is not possible to define different authentication methods on each  printer.
       You  can  specify the list of UAMS multiple times, but only the last setting will be used.
       Currently only uams_guest.so, uams_passwd.so, and uams_pam.so  are  supported  as  printer
       authentication  methods.   The guest method requires a valid username, but not a password.
       The passwd and pam methods require both a valid username and the correct password.

		       Default configuration file.

       /etc/printcap   Printer capabilities database.

       .ppd	       PostScript Printer Description file.  papd answers configuration and  font
		       queries from printing clients by consulting the configured PPD file.  Such
		       files are available from Adobe, Inc, via anonymous ftp from  ftp.adobe.com
		       in			      /pub/adobe/printerdrivers/mac/all/ppdfiles/
		       (ftp://ftp.adobe.com//pub/adobe/printerdrivers/mac/all/ppdfiles/), or from
		       the  printer's  manufacturer.   If  no  PPD  file is configured, papd will
		       return the default answer, possibly causing the client to send excessively
		       large jobs.

       lpr(1), lprm(1), printcap(5).  lpc(8), lpd(8).

       papd  accepts  characters with the high bit set (a full 8-bits) from the clients, but some
       PostScript printers (including Apple Computer's	LaserWriter  family)  only  accept  7-bit
       characters  on their serial interface by default.  You will need to configure your printer
       to accept a full 8 bits.

netatalk 1.5				   06 Mar 2001					  PAPD(8)
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