NetApp
Configuration : Protocols > iSCSI : Managing iSCSI : Setting the default security for iSCSI initiators
Setting the default security for iSCSI initiators
You can remove the authentication settings for an initiator and use the default security method to authenticate the initiator.
Steps 
1.
From the Home tab, double-click the appropriate storage system.
2.
In the navigation pane, click Configuration > Protocols > iSCSI.
3.
In the Initiator Security tab, select the initiator whose security setting you want change.
4.
Click Set Default in the Initiator Security area, and then click Set Default in the confirmation box.
Related reference 
iSCSI window

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