Solaris Express, Developer Edition 1/08 Release: Packet filter hooks are now used for packet filtering in the Solaris Operating System. This feature offers the following advantages in system administration:
Packet filter hooks simplify the configuration of the Solaris IP filter.
Support for filtering packets across zones is now available.
Using filter hooks improves the performance of Solaris IP Filter.
For further details about these hooks, see Packet Filter Hooks. For tasks that are associated with packet filter hooks, see Chapter 25, Solaris IP Filter (Tasks).