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Oracle® Solaris 11.3 Programming Interfaces Guide

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Updated: April 2019
Chapter 9

Packet Filtering Hooks

The packet filtering hooks interface help develop value added network solutions at the kernel level such as security solutions including packet filtering and firewall and network address translation (NAT) solutions.

    The packet filtering hooks interfaces provide the following capabilities:

  • Notification each time a packet appears at one of the hook points

  • Notification each time a new instance of IP is created to support a new zone booting that requires an exclusive instance of IP

  • Kernel access to other basic network interface information such as interface names and addresses

  • Interception of packets on the loopback interface