--- title: "NAT tab" slug: "nat-tab" status: "update" updated: 2025-01-22T11:29:07Z published: 2025-01-22T11:29:07Z canonical: "docs.zpesystems.com/nat-tab" --- > ## Documentation Index > Fetch the complete documentation index at: https://docs.zpesystems.com/llms.txt > Use this file to discover all available pages before exploring further. # NAT tab There are eight built-in default chains (cannot be deleted): IPv4 with four, IPv6 with four. These accept Pre-routing, Output, Input, and Post-routing packets. Rules can be created for each chain. ![](https://cdn.document360.io/763c5fb1-b9af-4ccd-9ad6-cf28ae4cd5a3/Images/Documentation/image-1678899791891.png)