編輯cupsd.conf vi /etc/cups/cupsd.conf
#
# "$Id: cupsd.conf.in 7199 2008-01-08 00:16:30Z mike $"
#
# Sample configuration file for the Common UNIX Printing System (CUPS)
# scheduler. See "man cupsd.conf" for a complete description of this
# file.
#
MaxLogSize 2000000000

# Log general information in error_log - change "info" to "debug" for
# troubleshooting...
LogLevel info

# Administrator user group...
SystemGroup sys root


# Only listen for connections from the local machine.
Listen 0.0.0.0:631
Listen /var/run/cups/cups.sock

# Show shared printers on the local network.
Browsing On
BrowseOrder allow,deny
# (Change '@LOCAL' to 'ALL' if using directed broadcasts from another subnet.)
#BrowseAllow @LOCAL
rowseAllow @ALL

# Default authentication type, when authentication is required...
DefaultAuthType Basic

# Restrict access to the server...
<Location />
Order allow,deny
Allow from 172.*
Allow from 192.*
Allow from 173.*
Allow from 127.*
</Location>

# Restrict access to the admin pages...
<Location /admin>
#Encryption Required
Order allow,deny
Allow from 172.*
Allow from 192.*
Allow from 173.*
Allow from 127.*
</Location>

# Restrict access to configuration files...
<Location /admin/conf>
AuthType Default
Require user @SYSTEM
Order allow,deny
</Location>

# Set the default printer/job policies...
<Policy default>
# All administration operations require an administrator to authenticate...
<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>

# All printer operations require a printer operator to authenticate...
<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>

# Only the owner or an administrator can cancel or authenticate a job...
<Limit Cancel-Job CUPS-Authenticate-Job>
Require user @OWNER @SYSTEM
Order deny,allow
</Limit>

<Limit All>
Order deny,allow
</Limit>
</Policy>

#
# End of "$Id: cupsd.conf.in 7199 2008-01-08 00:16:30Z mike $".
#
# Job-related operations must be done by the owner or an administrator...
<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>

# All administration operations require an administrator to authenticate...
<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>