This document is only a guide to recommended security settings for Internet Protocol version 6 (IPv6) routers, particularly routers running Cisco Systems Internet Operating System (IOS) versions 12.3 through 12.4 and 12.4T. It does not provide comprehensive guidance; the directions in this document should be used in conjunction with the NSA Router Security Configuration Guide 1.1c or later. The advice in this document cannot replace well-designed...