The following documents explain the steps involved in enabling IPv6 on selected Cisco firewalls. There are several families of firewall products, and this article does not attempt to cover them all.

IPv6 on Cisco firewall describes the basic steps in enabling IPv6 on specified interfaces of a Cisco ASA firewall.

Deploying IPv6 in WAN/Branch Networks provides another sample configuration of a Cisco ASA firewall. It comes from the book IPv6 for Enterprise Networks by Cisco Press.

A general guide to Cisco firewall configuration is given by this Security Configuration Guide: Zone-Based Policy Firewall.

A complete reference with numerous examples and detailed explanation of the ASA firewall configuration options is available here on the Cisco website. A complete reference with numerous examples and detailed explanation of the IOS-based firewall configuration options is available here on the Cisco website. An IPv6-specific Frequently Asked Questions (FAQ) file is maintained by Cisco. Cisco in the past maintained an IPv6-specific Knowledge Base and maintains a Small Business Support Community for its equipment.