[Samba] smbclient error talking to Netapp with SMB 3.11 / Samba 4.7.11

Philipp Gesang philipp.gesang at intra2net.com
Wed Feb 13 15:14:09 UTC 2019


we have a situation where access to a share on some Netapp box
fails with “client max protocol” set to SMB3_11 (or unset):

    protocol negotiation failed: NT_STATUS_INVALID_NETWORK_RESPONSE

With a protocol max set to SMB3_10 or SMB3_02 the login prompt is
reached and subsequent file access is succeeds:

     negotiated dialect[SMB3_00] against server[]
    got OID=1.2.840.48018.1.2.2
    Enter DOM.AIN\foobar's password:

The symptoms resemble that of this bug:
https://bugzilla.samba.org/show_bug.cgi?id=13009 but the protocol
versions differ. Also we’re pretty much on vanilla 4.7.11 so we
have commit 81f31fd509.

We have packet captures of the three protocol versions mentioned
and (not really conclusive to me) debug output of the client. Due
to confidentiality reasons I can’t share them but I will try and
answer any questions about the dumps. Also this is a customer’s
system so we’re very limited in our means to run tests.

Any idea what might be the issue?


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