Add an IP based ACL for targets
Select the “Shares and targets” main menu item on the left of the screen.
Select the “ISCSI Targets” sub menu tab.
The list of existing targets will then be displayed.
Click on the “View details” button corresponding to the desired target
Click on the “Add an ACL” button in the “ACLs (Authorized Ips/Initiators)” section
You will be prompted for an IP address of an initiator to permit before adding the ACL.