[linux-cifs-client] failed connections to 2008r2 server in high security mode
Jeff Layton
jlayton at samba.org
Fri Apr 23 04:40:52 MDT 2010
On Thu, 22 Apr 2010 22:59:10 -0500
Shirish Pargaonkar <shirishpargaonkar at gmail.com> wrote:
> On Thu, Apr 22, 2010 at 1:01 PM, Jimi Schwar <schwarj at mail.montclair.edu> wrote:
> > I am having a horrible time connecting to a Windows 2008r2 server that
> > requires signing and NTLMv2 from a RHEL 5 server. When trying to
> > connect I issue the following command:
> >
> > mount -t cifs //<servername>/<sharename> /mnt/cifs/ -o
> > user=<SERVERNAME>\\user,sec=ntlmv2i -vv
> >
> > After entering my password the verbose output is:
> >
> > mount.cifs kernel mount options:
> > unc=//<servername>\<sharename>,domain=<SERVERNAME>,ver=1,rw,user=<username>,,,,,,,,,,,,,,sec=ntlmv2i,ip=x.x.x.x,pass=********
> > mount error(22): Invalid argument
> > Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)
> >
> > I have tried every combination I can think of, replacing sec=ntlmv2i
> > with ntlmv2, and specifying sign, adding the domain name, trying actual
> > AD users instead of a local user, but all have failed. However I have
> > no problems at all connecting with smbclient. One thing I did notice is
> > that with the smbclient SPNEGO must be used to make a connection, when I
> > set it to "no" the connection always fails. I believe I have it
> > configured properly for the kernel.
> >
> > I have the following 2 lines in /etc/request-key.conf
> >
> > create cifs.spnego * * /usr/sbin/cifs.upcall %k
> > create dns_resolver * * /usr/sbin/cifs.upcall %k
> >
> > and I have keyutils installed. Can anyone tell me what I'm missing, as
> > I'm at a complete loss getting this connection to work.
> >
> > [root@]# yum list | grep keyutil
> > keyutils.x86_64 1.2-1.el5
> > installed
> > keyutils-libs.i386 1.2-1.el5
> > installed
> > keyutils-libs.x86_64 1.2-1.el5 installed
> >
> > Here is my kernel module info:
> >
> > [root@]# modinfo cifs
> > filename: /lib/modules/2.6.18-194.el5/kernel/fs/cifs/cifs.ko
> > version: 1.60RH
> > description: VFS to access servers complying with the SNIA CIFS
> > Specification e.g. Samba and Windows
> > license: GPL
> > author: Steve French <sfrench at us.ibm.com>
> > srcversion: 1E19234127C80DD280CE641
> > depends:
> > vermagic: 2.6.18-194.el5 SMP mod_unload gcc-4.1
> > parm: CIFSMaxBufSize:Network buffer size (not including
> > header). Default: 16384 Range: 8192 to 130048 (int)
> > parm: cifs_min_rcv:Network buffers in pool. Default: 4 Range:
> > 1 to 64 (int)
> > parm: cifs_min_small:Small network buffers in pool. Default:
> > 30 Range: 2 to 256 (int)
> > parm: cifs_max_pending:Simultaneous requests to server.
> > Default: 50 Range: 2 to 256 (int)
> > module_sig:
> > 883f3504ba0377878ccfeaa942826a11233a309e20373ac358c1f44611144fd5c03072bacf60c50a0b0fd3052e2277cc786c308ad54cf16c85f0bf
> >
> > dmesg output of the connection:
> >
> > fs/cifs/cifsfs.c: Devname: //x.x.montclair.edu/sharename flags: 64
> > fs/cifs/connect.c: CIFS VFS: in cifs_mount as Xid: 28 with uid: 0
> > fs/cifs/connect.c: Domain name set
> > fs/cifs/connect.c: Username: user
> > fs/cifs/connect.c: UNC: \\x.x.montclair.edu\webhome ip: x.x.x.x
> > fs/cifs/connect.c: Socket created
> > fs/cifs/connect.c: sndbuf 16384 rcvbuf 87380 rcvtimeo 0x1b58
> > fs/cifs/connect.c: Existing smb sess not found
> > fs/cifs/connect.c: Demultiplex PID: 6900
> > fs/cifs/cifssmb.c: secFlags 0x1005
> > fs/cifs/transport.c: For smb_command 114
> > fs/cifs/transport.c: Sending smb: total_len 82
> > | 0x00 0x00 0x00 0x4e 0xff 0x53 0x4d 0x42 | _ _ _ N ? S M B
> > | 0x72 0x00 0x00 0x00 0x00 0x00 0x01 0xc0 | r _ _ _ _ _ _ ?
> > | 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 | _ _ _ _ _ _ _ _
> > | 0x00 0x00 0x00 0x00 0x00 0x00 0xf3 0x1a | _ _ _ _ _ _ ? _
> > | 0x00 0x00 0x01 0x00 0x00 0x2b 0x00 0x02 | _ _ _ _ _ + _ _
> > | 0x4c 0x4d 0x31 0x2e 0x32 0x58 0x30 0x30 | L M 1 . 2 X 0 0
> > | 0x32 0x00 0x02 0x4c 0x41 0x4e 0x4d 0x41 | 2 _ _ L A N M A
> > | 0x4e 0x32 0x2e 0x31 0x00 0x02 0x4e 0x54 | N 2 . 1 _ _ N T
> > | 0x20 0x4c 0x4d 0x20 0x30 0x2e 0x31 0x32 | L M 0 . 1 2
> > | 0x00 0x02 0x50 0x4f 0x53 0x49 0x58 0x20 | _ _ P O S I X
> > | 0x32 0x00 | 2 _
> > fs/cifs/connect.c: rfc1002 length 0x71
> > | 0x6d 0x00 0x00 0x00 0xff 0x53 0x4d 0x42 | m _ _ _ ? S M B
> > | 0x72 0x00 0x00 0x00 0x00 0x80 0x01 0xc0 | r _ _ _ _ _ _ ?
> > | 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 | _ _ _ _ _ _ _ _
> > | 0x00 0x00 0x00 0x00 0x00 0x00 0xf3 0x1a | _ _ _ _ _ _ ? _
> > | 0x00 0x00 0x01 0x00 0x11 0x02 0x00 0x0f | _ _ _ _ _ _ _ _
> > | 0x32 0x00 0x01 0x00 0x04 0x41 0x00 0x00 | 2 _ _ _ _ A _ _
> > | 0x00 0x00 0x01 0x00 0x00 0x00 0x00 0x00 | _ _ _ _ _ _ _ _
> > | 0xfc 0xe3 0x01 0x00 0x8c 0x00 0x5c 0x77 | ? ? _ _ _ _ \ w
> > | 0x42 0xe2 0xca 0x01 0xf0 0x00 0x08 0x28 | B ? ? _ ? _ _ (
> > | 0x00 0x93 0x41 0xc6 0x0a 0x12 0xc3 0x01 | _ _ A ? _ _ ? _
> > | 0x89 0x41 0x00 0x44 0x00 0x00 0x00 0x43 | _ A _ D _ _ _ C
> > | 0x00 0x57 0x00 0x46 0x00 0x4c 0x00 0x50 | _ W _ F _ L _ P
> > | 0x00 0x52 0x00 0x53 0x00 0x56 0x00 0x52 | _ R _ S _ V _ R
> > | 0x00 0x31 0x00 0x57 0x00 0x38 0x00 0x00 | _ 1 _ W _ 8 _ _
> > | 0x00 | _
> > | 0x6d 0x00 0x00 0x00 0xff 0x53 0x4d 0x42 | m _ _ _ ? S M B
> > | 0x72 0x00 0x00 0x00 0x00 0x80 0x01 0xc0 | r _ _ _ _ _ _ ?
> > | 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 | _ _ _ _ _ _ _ _
> > | 0x00 0x00 0x00 0x00 0x00 0x00 0xf3 0x1a | _ _ _ _ _ _ ? _
> > | 0x00 0x00 0x01 0x00 0x11 0x02 0x00 0x0f | _ _ _ _ _ _ _ _
> > | 0x32 0x00 0x01 0x00 0x04 0x41 0x00 0x00 | 2 _ _ _ _ A _ _
> > | 0x00 0x00 0x01 0x00 0x00 0x00 0x00 0x00 | _ _ _ _ _ _ _ _
> > | 0xfc 0xe3 0x01 0x00 0x8c 0x00 0x5c 0x77 | ? ? _ _ _ _ \ w
> > | 0x42 0xe2 0xca 0x01 0xf0 0x00 0x08 0x28 | B ? ? _ ? _ _ (
> > | 0x00 0x93 0x41 0xc6 0x0a 0x12 0xc3 0x01 | _ _ A ? _ _ ? _
> > | 0x89 0x41 0x00 0x44 0x00 0x00 0x00 0x43 | _ A _ D _ _ _ C
> > | 0x00 0x57 0x00 0x46 | _ W _ F
> > fs/cifs/cifssmb.c: Dialect: 2
> > fs/cifs/cifssmb.c: Must sign - secFlags 0x1005
> > fs/cifs/cifssmb.c: negprot rc 0
> > fs/cifs/connect.c: Security Mode: 0xf Capabilities: 0x1e3fc TimeAdjust:
> > 14400
> > fs/cifs/sess.c: sess setup type 3
> > fs/cifs/transport.c: For smb_command 115
> > fs/cifs/transport.c: Sending smb: total_len 270
> > | 0x00 0x00 0x01 0x0a 0xff 0x53 0x4d 0x42 | _ _ _ _ ? S M B
> > | 0x73 0x00 0x00 0x00 0x00 0x00 0x05 0xc0 | s _ _ _ _ _ _ ?
> > | 0x00 0x00 0x8f 0x28 0x1d 0xb0 0xcf 0x3c | _ _ _ ( _ ? ? <
> > | 0xd6 0x53 0x00 0x00 0x00 0x00 0xf3 0x1a | ? S _ _ _ _ ? _
> > | 0x00 0x00 0x02 0x00 0x0d 0xff 0x00 0x00 | _ _ _ _ _ ? _ _
> > | 0x00 0x58 0x40 0x32 0x00 0x00 0x00 0x00 | _ X @ 2 _ _ _ _
> > | 0x00 0x00 0x00 0x00 0x00 0x34 0x00 0x00 | _ _ _ _ _ 4 _ _
> > | 0x00 0x00 0x00 0xdc 0xc0 0x00 0x00 0xcd | _ _ _ ? ? _ _ ?
> > | 0x00 | _
> > fs/cifs/connect.c: rfc1002 length 0x27
> > | 0x23 0x00 0x00 0x00 0xff 0x53 0x4d 0x42 | # _ _ _ ? S M B
> > | 0x73 0x0d 0x00 0x00 0xc0 0x80 0x05 0xc0 | s _ _ _ ? _ _ ?
> > | 0x00 0x00 0x8f 0x28 0x1d 0xb0 0xcf 0x3c | _ _ _ ( _ ? ? <
> > | 0xd6 0x53 0x00 0x00 0x00 0x00 0xf3 0x1a | ? S _ _ _ _ ? _
> > | 0x00 0x00 0x02 0x00 0x00 0x00 0x00 | _ _ _ _ _ _ _
> > | 0x23 0x00 0x00 0x00 0xff 0x53 0x4d 0x42 | # _ _ _ ? S M B
> > | 0x73 0x0d 0x00 0x00 0xc0 0x80 0x05 0xc0 | s _ _ _ ? _ _ ?
> > | 0x00 0x00 0x8f 0x28 0x1d 0xb0 0xcf 0x3c | _ _ _ ( _ ? ? <
> > | 0xd6 0x53 0x00 0x00 0x00 0x00 0xf3 0x1a | ? S _ _ _ _ ? _
> > | 0x00 0x00 0x02 0x00 0x00 0x00 0x00 0x00 | _ _ _ _ _ _ _ _
> > | 0x00 0x58 0x40 0x32 0x00 0x00 0x00 0x00 | _ X @ 2 _ _ _ _
> > | 0x00 0x00 0x00 0x18 0x00 0x18 0x00 0x00 | _ _ _ _ _ _ _ _
> > | 0x00 0x00 0x00 0xdc 0xc0 0x00 0x00 0xc9 | _ _ _ ? ? _ _ ?
> > | 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 | _ _ _ _ _ _ _ _
> > | 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 | _ _ _ _ _ _ _ _
> > | _ _ _ _ _ _ _ _
> > CIFS VFS: Unexpected SMB signature
> > Status code returned 0xc000000d NT_STATUS_INVALID_PARAMETER
> > fs/cifs/netmisc.c: Mapping smb error code 87 to POSIX err -22
> > fs/cifs/misc.c: Null buffer passed to cifs_small_buf_release
> > fs/cifs/sess.c: ssetup rc from sendrecv2 is -22
> > fs/cifs/sess.c: ssetup freeing small buf ffff81006ef78300
> > CIFS VFS: Send error in SessSetup = -22
> > fs/cifs/connect.c: CIFS VFS: leaving cifs_mount (xid = 28) rc = -22
> > CIFS VFS: cifs_mount failed w/return code = -22
> >
> >
> > _______________________________________________
> > linux-cifs-client mailing list
> > linux-cifs-client at lists.samba.org
> > https://lists.samba.org/mailman/listinfo/linux-cifs-client
> >
>
> It is broken. I have coded to send SPNEGO ntlmv2 authentication but
> somehow am getting error of
> Invalid parameter, the response does not tell which parameter though.
>
I think this is actually a bug in win2k8/vista:
http://support.microsoft.com/kb/957441
...though it wouldn't be an issue if NTLMSSP/SPNEGO worked properly.
--
Jeff Layton <jlayton at samba.org>
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