NetApp
7-mode/HA pair/V-Series : Configuration : Protocols : iSCSI : Initiator security : Managing initiator security : Editing default security settings
Editing default security settings
You can use the Edit Default Security dialog box to edit the default security settings for iSCSI initiators connected to the storage system.
Steps 
1.
From the Home tab, double-click the appropriate storage system to display a subtree of management features.
2.
Click Configuration > Protocols > iSCSI.
3.
If the appropriate tab is not displayed, click the Initiator Security.
4.
In the Default security box, click Edit.
5.
Change the security type.
For CHAP authentication, providing user name, password and confirming of password is mandatory for inbound, but optional for outbound.
6.
Click OK.