[cups.general] can not print by ipp, Always "upsdAuthorize: No authentication data provided."

[for.register for.register]

Hi,

My cups version is 1.3.8-r1, my firefox can print sometimes from
remote, but epdf can not print from
remote, further more I always has the following error in error log.

D [29/Aug/2008:19:49:00 +0800] cupsdReadClient: 8 POST
/printers/LBP1210 HTTP/1.1
D [29/Aug/2008:19:49:00 +0800] cupsdAuthorize: No authentication data provided.
D [29/Aug/2008:19:49:00 +0800] Get-Printer-Attributes
ipp://192.168.1.105:631/printers/LBP1210
D [29/Aug/2008:19:49:00 +0800] cupsdProcessIPPRequest: 8 status_code=0
(successful-ok)
D [29/Aug/2008:19:49:04 +0800] cupsdReadClient: 8 POST
/printers/LBP1210 HTTP/1.1
D [29/Aug/2008:19:49:04 +0800] cupsdAuthorize: No authentication data provided.
D [29/Aug/2008:19:49:04 +0800] Get-Job-Attributes
ipp://192.168.1.105:631/printers/LBP1210
D [29/Aug/2008:19:49:04 +0800] cupsdProcessIPPRequest: 8 status_code=0
(successful-ok)
D [29/Aug/2008:19:49:04 +0800] cupsdReadClient: 8 POST
/printers/LBP1210 HTTP/1.1
D [29/Aug/2008:19:49:04 +0800] cupsdAuthorize: No authentication data provided.
D [29/Aug/2008:19:49:04 +0800] Get-Printer-Attributes
ipp://192.168.1.105:631/printers/LBP1210
D [29/Aug/2008:19:49:04 +0800] cupsdProcessIPPRequest: 8 status_code=0
(successful-ok)
D [29/Aug/2008:19:49:09 +0800] cupsdReadClient: 8 POST
/printers/LBP1210 HTTP/1.1
D [29/Aug/2008:19:49:09 +0800] cupsdAuthorize: No authentication data provided.
D [29/Aug/2008:19:49:09 +0800] Get-Job-Attributes
ipp://192.168.1.105:631/printers/LBP1210
D [29/Aug/2008:19:49:09 +0800] cupsdProcessIPPRequest: 8 status_code=0
(successful-ok)
D [29/Aug/2008:19:49:09 +0800] cupsdReadClient: 8 POST
/printers/LBP1210 HTTP/1.1
D [29/Aug/2008:19:49:09 +0800] cupsdAuthorize: No authentication data provided.
D [29/Aug/2008:19:49:09 +0800] Get-Printer-Attributes
ipp://192.168.1.105:631/printers/LBP1210
D [29/Aug/2008:19:49:09 +0800] cupsdProcessIPPRequest: 8 status_code=0
(successful-ok)

Here is my cupsd.conf :

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 all
BrowseAddress @LOCAL
DefaultAuthType Basic
DefaultEncryption Never
<Location />
  Allow From 127.0.0.1
  Allow From 192.168.1.0/24
  # Allow shared printing and remote administration...
  Order allow,deny
  Allow all
</Location>
<Location /admin>
  #Require user @SYSTEM
  Allow 192.168.1.0/24
  # Allow remote administration...
 Order allow,deny
  Allow all
</Location>
<Location /admin/conf>
  AuthType Basic
  Require user @SYSTEM
  Allow 192.168.1.0/24
  # Allow remote access to the configuration files...
  Order allow,deny
  Allow all
</Location>
<Policy default>
  <Limit Send-Document Send-URI Hold-Job Release-Job Restart-Job
Purge-Jobs Set-Job-Attributes Create-Job-Suu
bscription Renew-Subscription Cancel-Subscription Get-Notifications
Reprocess-Job Cancel-Current-Job Suspendd
-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-Defaull
t>
    AuthType Default
    Require user @SYSTEM
    Order deny,allow
  </Limit>
  <Limit Cancel-Job CUPS-Authenticate-Job>
  </Limit>
  <Limit Cancel-Job CUPS-Authenticate-Job>
    Require user @OWNER @SYSTEM
    Order deny,allow
  </Limit>
  <Limit All>
    Order deny,allow
  </Limit>
</Policy>

Thanks

Walter