[2024-feb-29] Sad news: Eric Layton aka Nocturnal Slacker aka vtel57 passed away on Feb 26th, shortly after hospitalization. He was one of our Wiki's most prominent admins. He will be missed.

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Utiliser un scanner en réseau

Ce Howto décrit comment on peut utiliser un scanner qui est connecté à un autre ordinateur sous Slackware dans le même réseau.

Logiciels nécessaires

Tous les paquetages nécessaires sont disponibles dans une installation standard de Slackware. Il s'agit de sane et de xsane pour le scanner. On utilise aussi le démon du super-serveur Internet inetd ( sur la machine qui sert le scanner ) pour écouter le réseau à la recherche de messages pour le scanner.

Permissions

J'ai une vieille HP-PSC-1410 Multifonctions qui est connecté en USB à mon serveur. Pour pouvoir utiliser l'appareil pour scanner ( localement ou au travers du réseau ), il faut être membre du groupe scanner et du groupe lp. Notez que tous les utilisateurs créés par la commande adduser sont membres par défaut de ces groupes.

Configuration of the server

One has to edit the /etc/sane.d/saned.conf file. Since the inetd is used to listen to the network the only part one has to configure is the “Access-List”. It lists the IP-adresses of the computers which are allowed to access the scanner. It is possible to list single IP-Adresses or the adress of the whole subnet, here I use

192.168.98.0/24

In the /etc/inetd.conf file one needs a line

sane-port    stream    tcp    nowait    root.root    /usr/sbin/saned    saned

Be sure to have the following line in your /etc/services file

sane-port          6566/tcp

Afterwards you will have to restart the inetd-daemon

/etc/rc.d/rc.inetd restart

Testing the network-settings for the server

With the nmap command one can scan the ports and find out if the sane-port is open, sane uses port 6566

Samsung ~ # nmap -p 6566 192.168.178.10

Starting Nmap 5.21 ( http://nmap.org ) at 2010-11-29 19:54 CET
Nmap scan report for srv-zuhause.home.local (192.168.98.10)
Host is up (0.0031s latency).
PORT     STATE SERVICE
6566/tcp open  unknown
MAC Address: xx:xx:xx:xx:xx:xx (xx Computer)

Nmap done: 1 IP address (1 host up) scanned in 0.23 seconds

The command can be executed on the server as well as any client, the ip-adress is the one of the server!

Configuration of the client(s)

On the client one has to edit the /etc/sane.d/net.conf file and add a line with the IP-adress of the server.

#/etc/sane.d/net.conf
192.168.98.10

Theoretically it is possible to insert the DNS-name of the server (instead of it's IP-adress) in the net.conf file, but it didn't work here.

Also be sure that in the file /etc/sane.d/dll.conf is a line with the word “net”

#/etc/sane.d/dll.conf
# enable the next line if you want to allow access through the network:
net
...

Testing the client-configuration

With the command scanimage -L we can check if the scanner is recognized by the system

markus@Samsung ~ $ scanimage -L
device `net:192.168.98.10:hpaio:/usb/PSC_1400_series?serial=CN619D724804DZ' is a Hewlett-Packard PSC_1400_series all-in-one.

Now if you open xsane on the client you should be able to use the scanner.

Sources

 fr:howtos:network_services:scanning_with_sane_in_a_network ()