With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cIscsiIntrPortalAttributesTable
Cisco Iscsi Intr Portal Attributes Table
1.3.6.1.4.1.9.10.94.1.5.1
A list of Internet Network Addresses (using TCP or another transport protocol) from which this iSCSI instance may initiate connections to other targets.
Back to CISCO-ISCSI-MIB MIB page.
IPHost Network monitor allows you to monitor cIscsiIntrPortalAttributesTable on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.