Imprimer en réseau linux-linux via cups

Bon, c'est résolu, mais sans vraiment comprendre pourquoi... Sans doute à force de trifouiller les fichiers de config. Je mets les deux fichiers ici, ça pourra peut être servir à quelqu'un-e. Et puis si quelqu'un-e peut m'expliquer pourquoi ça marche, ben je veux bien (notamment pourquoi le servername est seulement sur le fichier de confid du serveur et pas sur celui du client...).

Alors pour le server, etc/cups/cupsd.conf est :

Code:

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# Show troubleshooting information in error_log.
LogLevel debug
SystemGroup lpadmin
# Allow remote access
Port 631
Listen /var/run/cups/cups.sock
# Enable printer sharing and shared printers.
Browsing On
BrowseOrder allow,deny
BrowseAllow @LOCAL
BrowseAddress @LOCAL
DefaultAuthType Basic
<Location />
  # Allow shared printing and remote administration...
  Order allow,deny
  Allow @LOCAL
</Location>
<Location /admin>
  AuthType Basic
  AuthClass System
  # Allow remote administration...
  Order allow,deny
  Allow @LOCAL
</Location>
ServerName 192.168.1.12
<Location /admin/conf>
  AuthType Basic
  Require user @SYSTEM
  # Allow remote access to the configuration files...
  Order allow,deny
  Allow @LOCAL
</Location>
<Policy default>
  <Limit Send-Document Send-URI Hold-Job Release-Job Restart-Job Purge-Jobs Set-Job-Attributes Create-Job-Subscription Renew-Subscription Cancel-Subscription Get-Notifications Reprocess-Job Cancel-Current-Job Suspend-Current-Job Resume-Job CUPS-Move-Job>
    Require user @OWNER @SYSTEM
    Order deny,allow
  </Limit>
  <Limit Pause-Printer Resume-Printer Set-Printer-Attributes Enable-Printer Disable-Printer Pause-Printer-After-Current-Job Hold-New-Jobs Release-Held-New-Jobs Deactivate-Printer Activate-Printer Restart-Printer Shutdown-Printer Startup-Printer Promote-Job Schedule-Job-After CUPS-Add-Printer CUPS-Delete-Printer CUPS-Add-Class CUPS-Delete-Class CUPS-Accept-Jobs CUPS-Reject-Jobs CUPS-Set-Default>
    AuthType Basic
    Require user @SYSTEM
    Order deny,allow
  </Limit>
  <Limit CUPS-Authenticate-Job>
    Require user @OWNER @SYSTEM
    Order deny,allow
  </Limit>
  # Only the owner or an administrator can cancel a job...
  <Limit Cancel-Job>
    Order deny,allow
    Require user @OWNER @SYSTEM
  </Limit>
  <Limit All>
    Order deny,allow
  </Limit>
</Policy>

Et pour le client :
Via cups j'ai indiqué l'uri : ipp://192.168.1.12:631/printers/epson740
et etc/cups/cupsd.conf est :

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# Show troubleshooting information in error_log.
LogLevel debug
SystemGroup lpadmin
# Only listen for connections from the local machine.
Listen localhost:631
Listen /var/run/cups/cups.sock
# Show shared printers on the local network.
Browsing On
BrowseOrder allow,deny
BrowseAllow @LOCAL
DefaultAuthType Basic
<Location />
  # Restrict access to the server...
  Order allow,deny
  Allow localhost
</Location>
<Location /admin>
  Encryption Required
  # Restrict access to the admin pages...
  Order allow,deny
  Allow localhost
</Location>
<Location /admin/conf>
  AuthType Basic
  Require user @SYSTEM
  # Restrict access to the configuration files...
  Order allow,deny
  Allow localhost
</Location>
<Policy default>
  <Limit Send-Document Send-URI Hold-Job Release-Job Restart-Job Purge-Jobs Set-Job-Attributes Create-Job-Subscription Renew-Subscription Cancel-Subscription Get-Notifications Reprocess-Job Cancel-Current-Job Suspend-Current-Job Resume-Job CUPS-Move-Job>
    Require user @OWNER @SYSTEM
    Order deny,allow
  </Limit>
  <Limit Pause-Printer Resume-Printer Set-Printer-Attributes Enable-Printer Disable-Printer Pause-Printer-After-Current-Job Hold-New-Jobs Release-Held-New-Jobs Deactivate-Printer Activate-Printer Restart-Printer Shutdown-Printer Startup-Printer Promote-Job Schedule-Job-After CUPS-Add-Printer CUPS-Delete-Printer CUPS-Add-Class CUPS-Delete-Class CUPS-Accept-Jobs CUPS-Reject-Jobs CUPS-Set-Default>
    AuthType Basic
    Require user @SYSTEM
    Order deny,allow
  </Limit>
  <Limit CUPS-Authenticate-Job>
    Require user @OWNER @SYSTEM
    Order deny,allow
  </Limit>
  # Only the owner or an administrator can cancel a job...
  <Limit Cancel-Job>
    Order deny,allow
    Require user @OWNER @SYSTEM
  </Limit>
  <Limit All>
    Order deny,allow
  </Limit>
</Policy>