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Status Delivered
Workspace IBM i
Categories Security
Created by Guest
Created on Jun 13, 2017

RELATED IDEAS

Would like QNTC to support AES SMB2 mutual authentication using Kerberos

See this idea on ideas.ibm.com

QNTC, AES, and SMB2 fail to authenticate using Kerberos to network shares.

This issue is related to the encryption type of Kerberos ticket. When AES is used, it will need a mutual authentication on the message between the client and the server, however, QNTC doesn't support mutual authentication.

The workaround when using SMB2 with Kerberos authentication is to Disable RequireSecuritySignature(set to 0) under KEY_LOCAL_MACHINE->SystemCurrentControlSet->Services->LanmanServer->Parameters


Use Case:

After upgrading IBM i from 7.2 to 7.3, QNTC quit working. We had to add a *SYS environment variable "QIBM_ZLC_SMC_VERS" = '1' to force SMB out of version 2 and into version 1.

We were driven to use the more current AES authentication on Kerberos tickets and are using them in our keytab file for "cifs" entries.


Idea priority Medium
  • Guest
    Reply
    |     Jul 27, 2018

    This is available via PTF in IBM i releases 7.2 and 7.3.

    7.3 PTF - SI65802
    7.2 PTF - SI65842

    Note that there is a second PTF for each of these which is a prerequisite that will be sent automatically.

    The external support document associated with these fixes can be found at the following link:
    http://www-01.ibm.com/support/docview.wss?uid=nas2SE67762

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