Here each tab represents an interface of the firewall (eth0, eth1, eth2 and lo). You can change interface name, label, its type and edit, add or remove IP addresses. You can manage both IPv4 and IPv6 addresses on this page of the wizard.<br>
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Template object is preconfigured with generic IP addresses that likely do not match addressing scheme you use on your network. This page of the wizard allows you to change addresses to match your setup.