actually I set the DefaultAuthType to "basic" now,
but it still seems to be using none auth:

D [09/Oct/2012:09:59:30 -0700] [Client 21] Authorized as yyang using PeerCred
D [09/Oct/2012:09:59:30 -0700] [Client 21] 2.0 Get-Jobs 268
D [09/Oct/2012:09:59:30 -0700] Get-Jobs ipp://localhost/printers/rsa
D [09/Oct/2012:09:59:30 -0700] Returning IPP successful-ok for Get-Jobs (ipp://localhost/printers/rsa) from localhost
D [09/Oct/2012:09:59:30 -0700] cupsdSetBusyState: newbusy="Printing jobs and dirty files", busy="Active clients, printing jobs, an
d dirty files"
D [09/Oct/2012:09:59:30 -0700] [Job 192] ATTR: auth-info-required=none
D [09/Oct/2012:09:59:30 -0700] load_ppd: Loading /var/cache/cups/rsa.data...
D [09/Oct/2012:09:59:30 -0700] cupsdRegisterPrinter(p=0xb7e45d90(rsa))
D [09/Oct/2012:09:59:30 -0700] cupsdMarkDirty(P-----)
D [09/Oct/2012:09:59:30 -0700] cupsdSetBusyState: newbusy="Printing jobs and dirty files", busy="Printing jobs and dirty files"
D [09/Oct/2012:09:59:30 -0700] [Job 192] PID 5103 (/usr/lib/cups/backend/ipp14) stopped with status 2.
I [09/Oct/2012:09:59:30 -0700] [Job 192] Backend returned status 2 (authentication required)




on the remote printer server side, I see the following debug log:


D [09/Oct/2012:10:09:13 -0700] cupsdAcceptClient: 14 from localhost (Domain)
D [09/Oct/2012:10:09:13 -0700] Report: clients=1
D [09/Oct/2012:10:09:13 -0700] Report: jobs=1
D [09/Oct/2012:10:09:13 -0700] Report: jobs-active=0
D [09/Oct/2012:10:09:13 -0700] Report: printers=1
D [09/Oct/2012:10:09:13 -0700] Report: printers-implicit=0
D [09/Oct/2012:10:09:13 -0700] Report: stringpool-string-count=13712
D [09/Oct/2012:10:09:13 -0700] Report: stringpool-alloc-bytes=9240
D [09/Oct/2012:10:09:14 -0700] Report: stringpool-total-bytes=247592
D [09/Oct/2012:10:09:14 -0700] cupsdReadClient: 14 POST / HTTP/1.1
D [09/Oct/2012:10:09:14 -0700] cupsdSetBusyState: newbusy="Active clients", busy="Not busy"
D [09/Oct/2012:10:09:14 -0700] cupsdAuthorize: No authentication data provided.
D [09/Oct/2012:10:09:14 -0700] cupsdReadClient: 14 1.1 CUPS-Get-Printers 1
D [09/Oct/2012:10:09:14 -0700] CUPS-Get-Printers
D [09/Oct/2012:10:09:14 -0700] Returning IPP successful-ok for CUPS-Get-Printers (no URI) from localhost
D [09/Oct/2012:10:09:14 -0700] cupsdSetBusyState: newbusy="Not busy", busy="Active clients"
D [09/Oct/2012:10:09:14 -0700] cupsdReadClient: 14 POST / HTTP/1.1
D [09/Oct/2012:10:09:14 -0700] cupsdSetBusyState: newbusy="Active clients", busy="Not busy"
D [09/Oct/2012:10:09:14 -0700] cupsdAuthorize: No authentication data provided.
D [09/Oct/2012:10:09:14 -0700] cupsdReadClient: 14 1.1 CUPS-Get-Classes 1
D [09/Oct/2012:10:09:14 -0700] CUPS-Get-Classes
D [09/Oct/2012:10:09:14 -0700] Returning IPP successful-ok for CUPS-Get-Classes (no URI) from localhost
D [09/Oct/2012:10:09:14 -0700] cupsdSetBusyState: newbusy="Not busy", busy="Active clients"
D [09/Oct/2012:10:09:14 -0700] cupsdReadClient: 14 WAITING Closing on EOF
D [09/Oct/2012:10:09:14 -0700] cupsdCloseClient: 14
D [09/Oct/2012:10:09:14 -0700] cupsdSetBusyState: newbusy="Not busy", busy="Not busy"
D [09/Oct/2012:10:09:41 -0700] cupsdAcceptClient: 14 from 192.168.0.3:631 (IPv4)
D [09/Oct/2012:10:09:41 -0700] cupsdReadClient: 14 POST /printers/HP_LaserJet_P2035 HTTP/1.1
D [09/Oct/2012:10:09:41 -0700] cupsdSetBusyState: newbusy="Active clients", busy="Not busy"
D [09/Oct/2012:10:09:41 -0700] cupsdAuthorize: No authentication data provided.
D [09/Oct/2012:10:09:41 -0700] cupsdCloseClient: 14
D [09/Oct/2012:10:09:41 -0700] cupsdSetBusyState: newbusy="Not busy", busy="Active clients"