NetApp
7-mode/HA pair/V-Series : Configuration : Protocols : iSCSI : Initiator security : Configuring initiator security : Editing initiator security
Editing initiator security
You can use the Edit Initiator Security dialog box to change the security for selected initiators. If you change the authentication type, the new authentication type is applied to all selected initiators.
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 tab.
4.
Select one or more initiators from the initiator list and click Edit.
5.
Change the security type.
For CHAP authentication, providing user name, password, and confirming password is mandatory for inbound, but optional for outbound.
6.
Click OK.
7.
You can use the Initiator Security tab to verify the changes you made to the selected initiator.