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- Designed to be fully MP-safe and highly efficient. - Tables/IP sets (hash or red-black tree) for high performance lookups. - Stateful filtering and Network Address Port Translation (NAPT). Framework for application level gateways (ALGs). - Packet inspection engine called n-code processor - inspired by BPF - supporting generic RISC-like and specific CISC-like instructions for common patterns (e.g. IPv4 address matching). See npf_ncode(9) manual. - Convenient userland utility npfctl(8) with npf.conf(8). NOTE: This is not yet a fully capable alternative to PF or IPFilter. Further work (support for binat/rdr, return-rst/return-icmp, common ALGs, state saving/restoring, logging, etc) is in progress. Thanks a lot to Matt Thomas for various useful comments and code review. Aye by: board@
$NetBSD: README,v 1.1 2008/11/13 10:06:46 ad Exp $ Do not automatically install modules that would fundamentally alter system behaviour or create a security hole, as the system may automatically load modules.