2008-02-14 01:57:19 +00:00
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<HTML>
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<HEAD>
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<TITLE>saned.8</TITLE>
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</HEAD>
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2008-02-11 01:50:42 +00:00
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<BODY BGCOLOR=#FFFFFF TEXT=#000000><H1 ALIGN=CENTER><IMG SRC="/images/sane.png" HEIGHT=117 WIDTH=346></H1>
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2008-02-14 01:57:19 +00:00
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<H1>saned.8</H1>
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<HR>
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<PRE>
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<!-- Manpage converted by man2html 3.0.1 -->
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<B><A HREF="saned.8.html">saned(8)</A></B> SANE Scanner Access Now Easy <B><A HREF="saned.8.html">saned(8)</A></B>
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</PRE>
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<H2>NAME</H2><PRE>
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saned - SANE network daemon
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</PRE>
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<H2>SYNOPSIS</H2><PRE>
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2013-10-01 02:17:11 +00:00
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<B>saned</B> <B>[</B> <B>-a</B> <I>[</I> <I>username</I> <I>]</I> <B>|</B> <B>-d</B> <I>[</I> <I>n</I> <I>]</I> <B>|</B> <B>-s</B> <I>[</I> <I>n</I> <I>]</I> <B>|</B> <B>-h</B> <B>]</B>
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2008-02-14 01:57:19 +00:00
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</PRE>
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<H2>DESCRIPTION</H2><PRE>
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<B>saned</B> is the SANE (Scanner Access Now Easy) daemon that allows remote
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clients to access image acquisition devices available on the local
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host.
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</PRE>
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<H2>OPTIONS</H2><PRE>
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2010-02-10 15:23:52 +00:00
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The <B>-a</B> flag requests that <B>saned</B> run in standalone daemon mode. In this
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mode, <B>saned</B> will detach from the console and run in the background,
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listening for incoming client connections; <B>inetd</B> is not required for
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<B>saned</B> operations in this mode. If the optional <B>username</B> is given after
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<B>-a</B> , <B>saned</B> will drop root privileges and run as this user (and group).
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2010-02-10 15:23:52 +00:00
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2008-02-14 01:57:19 +00:00
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The <B>-d</B> and <B>-s</B> flags request that <B>saned</B> run in debug mode (as opposed to
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2013-10-01 02:17:11 +00:00
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<B><A HREF="inetd.8.html">inetd(8)</A></B> daemon mode). In this mode, <B>saned</B> explicitly waits for a con‐
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nection request. When compiled with debugging enabled, these flags may
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be followed by a number to request debug info. The larger the number,
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the more verbose the debug output. E.g., <B>-d128</B> will request printing
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of all debug info. Debug level 0 means no debug output at all. The
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default value is 2. If flag <B>-d</B> is used, the debug messages will be
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printed to stderr while <B>-s</B> requests using syslog.
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2013-10-01 02:17:11 +00:00
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If <B>saned</B> is run from inetd, xinetd or systemd, no option can be given.
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The <B>-h</B> flag displays a short help message.
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2008-02-14 01:57:19 +00:00
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</PRE>
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<H2>CONFIGURATION</H2><PRE>
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First and foremost: <B>saned</B> is not intended to be exposed to the internet
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or other non-trusted networks. Make sure that access is limited by tcp‐
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wrappers and/or a firewall setup. Don't depend only on <B>saned</B>'s own
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authentication. Don't run <B>saned</B> as root if it's not necessary. And do
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2008-02-14 01:57:19 +00:00
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<B>not</B> install <B>saned</B> as setuid root.
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2012-08-27 01:52:45 +00:00
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The <I>saned.conf</I> configuration file contains both options for the daemon
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2010-02-10 15:23:52 +00:00
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and the access list.
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<B>data_portrange</B> = <I>min</I><B>_</B><I>port</I> - <I>max</I><B>_</B><I>port</I>
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Specify the port range to use for the data connection. Pick a
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port range between 1024 and 65535; don't pick a too large port
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range, as it may have performance issues. Use this option if
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your <B>saned</B> server is sitting behind a firewall. If that firewall
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is a Linux machine, we strongly recommend using the Netfilter
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2010-02-10 15:23:52 +00:00
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<I>nf</I><B>_</B><I>conntrack</I><B>_</B><I>sane</I> module instead.
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2012-08-27 01:52:45 +00:00
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The access list is a list of host names, IP addresses or IP subnets
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(CIDR notation) that are permitted to use local SANE devices. IPv6
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addresses must be enclosed in brackets, and should always be specified
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in their compressed form. Connections from localhost are always permit‐
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ted. Empty lines and lines starting with a hash mark (#) are ignored. A
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line containing the single character ``+'' is interpreted to match any
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hostname. This allows any remote machine to use your scanner and may
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2010-02-10 15:23:52 +00:00
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present a security risk, so this shouldn't be used unless you know what
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you're doing.
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A sample configuration file is shown below:
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# Daemon options
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data_portrange = 10000 - 10100
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# Access list
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2008-02-14 01:57:19 +00:00
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scan-client.somedomain.firm
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# this is a comment
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192.168.0.1
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192.168.2.12/29
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[::1]
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[2001:db8:185e::42:12]/64
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2012-08-27 01:52:45 +00:00
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The case of the host names does not matter, so AHost.COM is considered
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identical to ahost.com.
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2010-02-10 15:23:52 +00:00
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</PRE>
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2013-10-01 02:17:11 +00:00
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<H2>SERVER DAEMON CONFIGURATION</H2><PRE>
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2010-02-10 15:23:52 +00:00
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For <B>saned</B> to work properly in its default mode of operation, it is also
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2013-10-01 02:17:11 +00:00
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necessary to add the appropriate configuration for <I>(x)inetd</I> <I>or</I> <I>systemd.</I>
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(see below). Note that your inetd must support IPv6 if you want to
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connect to saned over IPv6 ; xinetd, openbsd-inetd and systemd are
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known to support IPv6, check the documentation for your inetd daemon.
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In the sections below the configuration for <I>inetd,</I> <I>xinetd</I> and <I>systemd</I>
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are described in more detail.
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For the configurations below it is necessary to add a line of the fol‐
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lowing form to <I>/etc/services</I>:
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sane-port 6566/tcp # SANE network scanner daemon
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The official IANA short name for port 6566 is "sane-port". The older
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name "sane" is now deprecated.
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</PRE>
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<H2>INETD CONFIGURATION</H2><PRE>
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It is required to add a single line to the inetd configuration file
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<I>(/etc/inetd.conf)</I>
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The configuration line normally looks like this:
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sane-port stream tcp nowait saned.saned /usr/sbin/saned saned
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2013-10-01 02:17:11 +00:00
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However, if your system uses <B><A HREF="tcpd.8.html">tcpd(8)</A></B> for additional security
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screening, you may want to disable saned access control by
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putting ``+'' in <I>saned.conf</I> and use a line of the following form
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in <I>/etc/inetd.conf</I> instead:
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sane-port stream tcp nowait saned.saned /usr/sbin/tcpd
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/usr/sbin/saned
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2013-10-01 02:17:11 +00:00
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Note that both examples assume that there is a <B>saned</B> group and a
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<B>saned</B> user. If you follow this example, please make sure that
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the access permissions on the special device are set such that
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<B>saned</B> can access the scanner (the program generally needs read
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and write access to scanner devices).
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2013-10-01 02:17:11 +00:00
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</PRE>
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<H2>XINETD CONFIGURATION</H2><PRE>
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2012-08-27 01:52:45 +00:00
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If xinetd is installed on your system instead of inetd the following
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example for <I>/etc/xinetd.conf</I> may be helpful:
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# default: off
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# description: The sane server accepts requests
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# for network access to a local scanner via the
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# network.
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service sane-port
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{
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port = 6566
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socket_type = stream
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wait = no
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user = saned
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group = saned
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server = /usr/sbin/saned
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}
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2013-10-01 02:17:11 +00:00
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</PRE>
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<H2>SYSTEMD CONFIGURATION</H2><PRE>
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for systemd we need to add 2 configuation files in <I>/etc/systemd/system.</I>
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2013-10-01 02:17:11 +00:00
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The first file we need to add here is called <I>saned.socket.</I> It shall
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have the following contents:
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[Unit]
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Description=saned incoming socket
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[Socket]
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ListenStream=6566
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Accept=yes
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MaxConnections=1
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[Install]
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WantedBy=sockets.target
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The second file to be added is <I>saned@.service</I> with the following con‐
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tents:
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[Unit]
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Description=Scanner Service
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Requires=saned.socket
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[Service]
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ExecStart=/usr/sbin/saned
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User=saned
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Group=saned
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StandardInput=null
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StandardOutput=syslog
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StandardError=syslog
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# Environment=SANE_CONFIG_DIR=/etc/sane.d SANE_DEBUG_DLL=255
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Is you need to set an environment variable for saned like <B>SANE_CON</B><EFBFBD><EFBFBD><B><EFBFBD></B><EFBFBD><EFBFBD>
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<B>FIG_DIR</B> you will have to remove the # on the last line and set the
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variable appropriately. Multiple variables can be set by separating
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the assignments by spaces as shown in the example above.
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Unlike <I>(x)inetd</I> systemd allows debugging output from backends set using
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<B>SANE_DEBUG_<backend_name></B> to be captured. With the service unit as
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described above, the debugging output is forwarded to the system log.
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2008-02-14 01:57:19 +00:00
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</PRE>
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<H2>FILES</H2><PRE>
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<I>/etc/hosts.equiv</I>
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The hosts listed in this file are permitted to access all local
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SANE devices. Caveat: this file imposes serious security risks
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2008-02-14 01:57:19 +00:00
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and its use is not recommended.
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<I>/etc/sane.d/saned.conf</I>
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Contains a list of hosts permitted to access local SANE devices
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(see also description of <B>SANE_CONFIG_DIR</B> below).
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<I>/etc/sane.d/saned.users</I>
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If this file contains lines of the form
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user:password:backend
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2013-10-01 02:17:11 +00:00
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access to the listed backends is restricted. A backend may be
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listed multiple times for different user/password combinations.
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2010-02-10 15:23:52 +00:00
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The server uses MD5 hashing if supported by the client.
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</PRE>
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<H2>ENVIRONMENT</H2><PRE>
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<B>SANE_CONFIG_DIR</B>
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This environment variable specifies the list of directories that
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may contain the configuration file. Under UNIX, the directories
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are separated by a colon (`:'), under OS/2, they are separated
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by a semi-colon (`;'). If this variable is not set, the config‐
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uration file is searched in two default directories: first, the
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current working directory (".") and then in /etc/sane.d. If the
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value of the environment variable ends with the directory sepa‐
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rator character, then the default directories are searched after
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the explicitly specified directories. For example, setting
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<B>SANE_CONFIG_DIR</B> to "/tmp/config:" would result in directories
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"tmp/config", ".", and "/etc/sane.d" being searched (in this
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order).
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</PRE>
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<H2>SEE ALSO</H2><PRE>
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2010-02-10 15:23:52 +00:00
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<B><A HREF="sane.7.html">sane(7)</A></B>, <B><A HREF="scanimage.1.html">scanimage(1)</A></B>, <B><A HREF="xscanimage.1.html">xscanimage(1)</A></B>, <B><A HREF="xcam.1.html">xcam(1)</A></B>, <B><A HREF="sane-dll.5.html">sane-dll(5)</A></B>,
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<B><A HREF="sane-net.5.html">sane-net(5)</A></B>, <B>sane-"backendname"</B>(5)
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2008-02-14 01:57:19 +00:00
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<I>http://www.penguin-breeder.org/?page=sane-net</I>
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</PRE>
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<H2>AUTHOR</H2><PRE>
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David Mosberger
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2010-02-10 15:23:52 +00:00
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20 Apr 2009 <B><A HREF="saned.8.html">saned(8)</A></B>
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2008-02-14 01:57:19 +00:00
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</PRE>
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<HR>
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<ADDRESS>
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Man(1) output converted with
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<a href="http://www.oac.uci.edu/indiv/ehood/man2html.html">man2html</a>
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</ADDRESS>
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</BODY>
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</HTML>
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