Administrator Guide

iSCSI NAT Port Forwarding Requirements for Virtual Port Mode
The following requirements must be met to congure NAT port forwarding for an iSCSI fault domain in virtual port mode.
• For each Storage Center iSCSI control port and virtual port, a unique public IP address and TCP port pair must be reserved on the
router that performs NAT.
• The router that performs NAT between the Storage Center and the public network must be congured to forward connections
destined for each public IP address and port pair to the appropriate Storage Center private target iSCSI IP address and private port (by
default, TCP port 3260).
iSCSI NAT Port Forwarding Example Conguration
In this example, a router separates the Storage Center on a private network (192.168.1.0/24) from a server (iSCSI initiator) on the public
network (1.1.1.60). To communicate with Storage Center iSCSI target ports on the private network, the server connects to a public IP
address owned by the router (1.1.1.1) on ports 9000 and 9001. The router forwards these connections to the appropriate private IP
addresses (192.168.1.50 and 192.168.1.51) on TCP port 3260.
Figure 25. iSCSI NAT Port Forwarding Diagram
1
iSCSI initiator (server or remote Storage Center)
2 Router performing NAT/port forwarding
3 Storage Center
Congure NAT Port Forwarding for an iSCSI Fault Domain
Congure NAT port forwarding for a fault domain to make sure that control port redirection works correctly.
Prerequisites
When the router that performs NAT and port forwarding receives inbound iSCSI connections destined for the specied public IP and public
port, it forwards the connections to the private
Storage Center iSCSI IP address and private port (by default, TCP port 3260).
• The Storage Center iSCSI ports must be congured for virtual port mode.
• For each Storage Center iSCSI control port and virtual port, a unique public IP address and TCP port pair must be reserved on the
router that performs NAT.
• The router that performs NAT between the Storage Center and the public network must be congured to forward connections
destined for each public IP address and port pair to the appropriate Storage Center private iSCSI IP address and appropriate port (by
default, TCP 3260).
Steps
1 If the Storage Manager Client is connected to a Data Collector, select a Storage Center from the Storage view.
2 Click the Storage tab.
3 In the Storage tab navigation pane, expand Fault Domains, then expand iSCSI and click the fault domain.
4 In the right pane, click Congure NAT Port Forwarding.
The Congure NAT Port Forwarding dialog box opens.
5 In the Port Forwarding Conguration area, congure port forwarding information for a Storage Center iSCSI port.
Storage Center Maintenance
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