Configuraciones de cups y samba para compartir impresora

He aquí una configuración típica de cups, nótese los «allow all» para permitir el acceso desde una IP externa.

root@inmolatus:~# cat /etc/cups/cupsd.conf
LogLevel warning
SystemGroup lpadmin
# Allow remote access
Port 631
Listen /var/run/cups/cups.sock
# Share local printers on the local network.
Browsing On
BrowseOrder allow,deny
BrowseRemoteProtocols
BrowseAddress @LOCAL
BrowseLocalProtocols CUPS dnssd
DefaultAuthType Basic
<Location />
# Allow shared printing and remote administration…
Order allow,deny
Allow @LOCAL
Allow all
</Location>
<Location /admin>
Encryption Required
# Allow remote administration…
Order allow,deny
Allow @LOCAL
Allow all
</Location>
<Location /admin/conf>
AuthType Default
Require user @SYSTEM
# Allow remote access to the configuration files…
Order allow,deny
Allow @LOCAL
Allow all
</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 CUPS-Add-Modify-Printer CUPS-Delete-Printer CUPS-Add-Modify-Class CUPS-Delete-Class CUPS-Set-Default>
AuthType Default
Require user @SYSTEM
Order deny,allow
</Limit>
<Limit Pause-Printer Resume-Printer 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-Accept-Jobs CUPS-Reject-Jobs>
AuthType Default
Require user @SYSTEM
Order deny,allow
</Limit>
<Limit Cancel-Job CUPS-Authenticate-Job>
Require user @OWNER @SYSTEM
Order deny,allow
</Limit>
<Limit All>
Order deny,allow
</Limit>
</Policy>

Mientras que en la versión de samba debería aparecer el siguiente extracto para poder imprimir desde Windows:

[printers]
comment = All Printers
browseable = yes
path = /var/spool/samba
guest ok = yes
create mask = 0700
use client driver = yes
printable = yes
public = yes
writable = no