P910ND(8)						      System Manager's Manual							 P910ND(8)

NAME

       p910nd - port 9100+n printer daemon

SYNOPSIS

       p910nd [-f device] [-i bindaddr] [-bv] [0|1|2]

DESCRIPTION

       p910nd  is  a small daemon that copies any data received on the port it is listening on to the corresponding printer port.  It is primarily
       intended for diskless Linux hosts running as printer drivers but there is no reason why it could not be used on diskful hosts.	Port  9100
       is copied to /dev/lp0, 9101 to /dev/lp1 and 9102 to /dev/lp2.  The default is port 9100 to /dev/lp0.

       The -f option can be used to specify a different printer device, e.g. /dev/usblp0.

       The -i option can be used to specify binding to one address instead of all interfaces which is the default.

       The -b option turns on bidirectional copying.

       The -v option shows the version number.

INSTALLATION

       p910nd can be run as a standalone daemon or from (x)inetd.  It will automatically detect if it is running under (x)inetd.

       A  sample  SysVinit  script,  p910nd.sh,  is provided for operation as a daemon.  p910nd will change its name under ps to match the printer
       port, i.e.  p9100d, p9101d and p9102d.

       When running under (x)inetd, the /etc/inetd.conf entry should look something like this (with tcpwrappers protection):

       p9101 stream tcp nowait root /usr/sbin/tcpd /sbin/p910nd

       Don't forget to add an entry in /etc/services for the corresponding port.

       If operating with lprng, use the host%port syntax for the printer device to send jobs to it.

       If operating with CUPS, this is supported as the AppSocket protocol, also known as the JetDirect (probably TM) protocol.

       If operating with classic Berkeley lpd, a sample client, client.pl, is provided.   This	should	be  installed  as  the	ifilter  (if=)	in
       /etc/printcap.	banner.pl should be installed as the ofilter (of=) in /etc/printcap.  It may be necessary to create a dummy spool file for
       lpd (lp=).  This file will be opened but not written to.  The corresponding C versions are left as an exercise for the reader.

       When running under inetd, more than one instance could be started.  To avoid problems with multiple  instances  attempting  to  access  the
       printer at the same time, make sure that only one client is active at any one time. This can be done by designating one host as the spooler
       and sending all jobs to this host. You will probably need to set up an intermediate queue anyway to provide print job filtering.

       If built with USE_WRAP, it uses the libwrap library (tcpwrappers).  Access control can be done with /etc/hosts.allow  and  /etc/hosts.deny.
       The service name is p910nd.

DIAGNOSTICS

       p910nd logs error messages to syslog.

SEE ALSO

       printcap(5), hosts_access(5)

FILES

       /var/run/p9100d.pid, /var/lock/p910nd/p9100d, /etc/hosts.allow, /etc/hosts.deny

COPYRIGHT

       p910nd is under the GNU Public License Version 2

AUTHOR

       Ken Yap (greenpossum ATSIGN users PERIOD sourceforge PERIOD net)

DATE

       Version 0.95 February 2011

								 16 February 2011							 P910ND(8)