[Samba] SMB Signature verification failed on incoming packet

[Fran Fabrizio]

Since posting this yesterday, I've been googling a great deal and
there's almost nothing out there for this particular error message. 
Does anyone have even a general idea of what type of error messages
these are?  I'm completely at a loss of what to check - I've never seen
it where smbclient works until it hits a certain file (also, to update
the error, it died at a different file a little further along last
night).

Thanks,
Fran

On Tue, 2004-01-13 at 17:44, Fran Fabrizio wrote:
> My setup is Samba/smbclient version 3.0.1 on linux RedHat 9. 
> \\snapper\dfs is a dfs share on snapper, a Win2k3 Active Directory
> server.  My smb.conf contains:
> 
> [global]
> realm = ciswinnet.cis.uab.edu
> workgroup=CISWINNET
> security = ADS
> encrypt passwords = yes
> password server = snapper.cis.uab.edu
> client use spnego = yes
> 
> I am trying to run the following command:
> 
> smbclient \\\\snapper\\dfs <mypassword> -U Administrator -E -W CISWINNET
> -D home -d0 -Tqca /tmp/junk.tar &
> 
> This command starts tarring up the contents of \\snapper\dfs\home until
> a very predictable point, when it fails with the error "SMB Signature
> verification failed on incoming packet!"
> 
> I start the command, and it happily runs for about 3 minutes and then...
> 
> [2004/01/13 17:39:21, 0] libsmb/clientgen.c:cli_receive_smb(121)
>   SMB Signature verification failed on incoming packet!
> [2004/01/13 17:39:21, 0] client/clitar.c:do_atar(698)
>   Error reading file
> \home\faculty\bryant\bryantback-brblt\Images\backups\backup20011126.zip
> : Server packet had invalid SMB signature!
> [2004/01/13 17:39:21, 0] client/clitar.c:do_atar(733)
>   Didn't get entire file. size=50316714, nread=46322640
> [2004/01/13 17:39:21, 0] client/clitar.c:do_atar(654)
>   Server packet had invalid SMB signature! opening remote file
> \home\faculty\bryant\bryantback-brblt\Images\backups\b
> (\home\faculty\bryant\bryantback-brblt\Images\backups\)
> [2004/01/13 17:39:21, 0] client/clitar.c:do_atar(654)
>   Server packet had invalid SMB signature! opening remote file
> \home\faculty\bryant\bryantback-brblt\Images\backups\b
> (\home\faculty\bryant\bryantback-brblt\Images\backups\)
> Server packet had invalid SMB signature! listing
> \home\faculty\bryant\bryantback-brblt\Images\c\*
> Server packet had invalid SMB signature! listing
> \home\faculty\bryant\bryantback-brblt\Images\f\*
> ...and so on for the rest of the \\snapper\dfs\home directory
> 
> It always happens with the file
> \home\faculty\bryant\bryantback-brblt\Images\backups\backup20011126.zip
> and then continues to fail out for the rest of the files in the
> directory. 
> 
> I'm don't think Kerberos is coming into play here since I'm providing my
> authentication on the command line, but that's just a guess.  Any
> pointers as to what's going wrong here? 
> 
> The end goal is to backup our dfs share via the Amanda backup software,
> and this command that I am running is exactly the one that Amanda is
> trying to run, and seeing the errors that I've outlined here.
> 
> Thanks,
> Fran
> 
> -- 
> 
> Fran Fabrizio
> Senior Systems Analyst
> Department of Computer and Information Sciences
> University of Alabama - Birmingham
> fran at cis.uab.edu
> (205) 934-0653
-- 

Fran Fabrizio
Senior Systems Analyst
Department of Computer and Information Sciences
University of Alabama - Birmingham
fran at cis.uab.edu
(205) 934-0653