Add loopback IP addresses for Single Firewalls

You can optionally define one or more loopback IP addresses for the firewall.

Any IP address that is not used to route traffic on another interface can be used as a loopback IP address. The same IP address can be used as a loopback IP address and as the IP address of a Tunnel Interface.

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Steps

  1. Right-click a Single Firewall and select Edit Single Firewall.
    The Engine Editor opens.
  2. In the navigation pane on the left, browse to Interfaces > Loopback.
    The Loopback pane opens on the right.
  3. Click Add.
    A row is added to the table.
  4. Click the Loopback Address cell and enter the loopback IP address.
    Note: If the IP address you want to use as a loopback IP address is already used as a Cluster Virtual IP Addresses (CVI) or Node Dedicated IP Addresses (NDI) on another interface, you must remove the IP address from the interface configuration before using it as a loopback IP address.
  5. Click OK.
  6. Click Save and Refresh.

Engine Editor – Interfaces – Loopback

Use this branch to define loopback IP addresses for Firewalls. Loopback IP addresses allow you to assign IP addresses that do not belong to any directly connected networks to the Firewall.

Option Definition
Bypass Default IP Address Specifies how the source IP address for traffic sent from the engine node is selected for tunnel interfaces that do not have IP addresses.
  • Use Loopback IP Address in Unnumbered Tunnel Interface — Uses an IP address listed in the table as the source IP address of traffic sent from the engine node.
  • Use Default Outgoing IP Address in Unnumbered Tunnel Interface — Uses the default outgoing IP address defined in the Interface Options pane as the source IP address of traffic sent from the engine node.
Click Add Row to add a row to the table, or Remove Row to remove the selected row.