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Dell Storage Manager 2020 R1 Administrator's Guide

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Configure NAT Port Forwarding for an iSCSI Fault Domain

Configure 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 specified 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 configured 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 configured 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 Dell 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 Configure NAT Port Forwarding.
    The Configure NAT Port Forwarding dialog box opens.
  5. In the Port Forwarding Configuration area, configure port forwarding information for a Storage Center iSCSI port.
    1. Click Add.
      The Create iSCSI NAT Port Forward dialog box opens.
    2. From the Port Name drop-down menu, select the iSCSI control port or a physical port.
      • Control ports are labeled with the name of the fault domain.
      • Physical ports are labeled with a WWN.
    3. In the Public IPv4 Address field, type the IPv4 address that iSCSI initiators (servers and remote Storage Centers) communicate with on the public network to reach the Storage Center iSCSI port.
    4. In the Public Port field, type the TCP port that iSCSI initiators communicate with on the public network to reach the Storage Center iSCSI port.
    5. Click OK.
      The Create iSCSI NAT Port Forward dialog box closes.
  6. Repeat the preceding steps for each additional iSCSI control port and physical port in the fault domain.
  7. In the Public Networks/Initiators area, define an iSCSI initiator IP address or subnet that requires port forwarding to reach the Storage Center because it is separated from the Storage Center by a router performing NAT.
    1. Click Add.
      The Create iSCSI NAT Public Network/Initiator dialog box opens.
    2. In the Public IPv4 Address field, type the IPv4 address for the iSCSI initiator or subnet for which NAT port forwarding is required.
    3. In the Subnet Mask field, type the subnet mask for the iSCSI initiator IP address or subnet.
    4. Click OK.
      The Create iSCSI NAT Public Network/Initiator dialog box closes.
  8. Repeat the preceding steps for each additional iSCSI initiator IP address or subnet that requires port forwarding.
  9. Click OK.

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