16.10 - SPNEGO Mechanism - Teradata Database

Teradata Database Security Administration

Product
Teradata Database
Release Number
16.10
Release Date
June 2017
Content Type
Administration
Security
Publication ID
B035-1100-161K
Language
English (United States)

The SPNEGO mechanism supports Kerberos authentication for users that log on to Teradata Database from Windows .NET clients, and functions similarly to the KRB5 mechanism.

The SPNEGO mechanism is derived from the KRB5 mechanism, and is therefore subject to the multiple LAN adapter restriction. For further information, see Kerberos Multiple LAN Adapter Restriction.

SPNEGO appears in the TdgssLibraryConfigFile.xml for all installations of Teradata Database and Unity; however, to make a configuration change to SPNEGO, you must manually copy the mechanism from the TdgssLibraryConfigFile.xml and add it to the TdgssUserConfigFile.xml (Teradata Database) and follow the instructions in Teradata Unity Installation, Configuration, and Upgrade Guide for Customers to update the Unity configuration file. Note, this copy only needs to be done for configuration changes; otherwise, the default configuration can remain in TdgssLibraryConfigFile.xml.

Example: SPNEGO Configuration

If you decide to use SPNEGO with directory authorization, you must add and configure some optional properties not shown in this example. See Option 3: Non-LDAP External Authentication with Directory Authorization.
 <!-- SPNEGO for UNIX Teradata servers -->
        <Mechanism Name="SPNEGO"
            ObjectId="1.3.6.1.5.5.2"
            LibraryName="gssp2spnego"
            Prefix="spnego"
            InterfaceType="negotiate">
            <MechanismProperties
                AuthenticationSupported="yes"
                AuthorizationSupported="no"
                SingleSignOnSupported="yes"
                DefaultMechanism="no"
                MechanismEnabled="yes"
                MechanismRank="65"
                DelegateCredentials="no"
                MutualAuthentication="yes"
                ReplayDetection="yes"
                OutOfSequenceDetection="yes"
                ConfidentialityDesired="yes"
                IntegrityDesired="yes"
                AnonymousAuthentication="no"
                DesiredContextTime=""
                DesiredCredentialTime=""
                CredentialUsage="0"
                LdapServerName=""
                LdapServerPort="389"
                LdapServerRealm=""
                LdapSystemFQDN=""
                LdapBaseFQDN=""
                LdapGroupBaseFQDN=""
                LdapUserBaseFQDN=""
                LdapClientReferrals="off"
                LdapClientDeref="never"
                LdapClientDebug="0"
                LdapClientRebindAuth="yes"
                LdapClientRandomDevice="/dev/urandom"
                LdapClientMechanism="SASL/DIGEST-MD5"
                LdapClientUseTls="no"
                LdapServiceFQDN=""
                LdapServicePasswordProtected="no"
                LdapServicePassword=""
                LdapClientSaslSecProps=""
                UseLdapConfig="no"
                />
            <MechQop Value="0"> GLOBAL_QOP_1 </MechQop>
            <NegotiatedMechanism ObjectId="1.2.840.113554.1.2.2"/>
       </Mechanism>