Public bug reported:
On Ubuntu 12.04 fully patched, this weekend I attempted to apply the
samba 2:3.6.25-0ubuntu0.12.04.2 updates. That resulted in a Samba NT4
PDC that downlevel Windows clients could no longer log in to. Logging
into said Windows machines with a local account and manually issuing the
NET USE command to bring up drive mounts to the Samba server were
successful.
I have taken log snapshots with Samba logging set to level 3 of a
Windows XP virtual machine attempting to connect to the Samba PDC
server.
>From the working log I see:
switch message SMBwriteX (pid 4906) conn 0xb82f9978
api_rpcTNP: rpc command: NETR_LOGONSAMLOGON
schannel_fetch_session_key_tdb: restored schannel info key
SECRETS/SCHANNEL/MDLXP
schannel_store_session_key_tdb: stored schannel info with key
SECRETS/SCHANNEL/MDLXP
Forcing Primary Group to 'Domain Users' for mdlueck
Whereas in the not working log I see at the same spot:
switch message SMBwriteX (pid 21144) conn 0xb96f7200
srv_pipe_check_verification_trailer: failed
Perhaps did Samba make a change that requires something to be specified
in the smb.conf to accept connections from legacy clients?
** Affects: samba (Ubuntu)
Importance: Undecided
Status: New
** Attachment added: "Diff of the two log files of the Window XP VM trying to
connect"
https://bugs.launchpad.net/bugs/1574228/+attachment/4645173/+files/SambaPDCWindowsXPClientConnectError.png
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https://bugs.launchpad.net/bugs/1574228
Title:
Changes to Samba packages for April 12 prevent legacy Windows clients
from logging in to NT4 style domain
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