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NPF (firewall): Features & Overview

NPF is a BSD licensed stateful packet filter, a central piece of software for firewalling. It is comparable to iptables, ipfw, ipfilter and PF. NPF is developed on NetBSD.

Language: English [EN]
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NPF (firewall) topic overview

The analysis highlights Features and Overview as prominent areas in the source structure around NPF (firewall).

Related topics
12
Source areas
2
Connected nodes
14
Extracted relationships
11
Concept neighborhoods
12
Bridge connections
14

What this topic covers Research coverage

Source areas are shown by the number of related topics found in each part of the analysis. Use smaller areas too: they can reveal specialized angles and content gaps.

Overview · 8 topics
Features · 4 topics

Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

License
BSD license
Operating system
NetBSD
Original author
Mindaugas Rasiukevicius
Release
October 17, 2012; 13 years ago (2012-10-17)
Repository
github.com/rmind/npf
Type
packet filter, Firewall

Explore all related topics Closing gaps

Browse the complete topic structure, not only the most central items. Less prominent entities and concepts can reveal missing angles, specialized context and useful research gaps. Each item opens a new analysis centered on that subject.

Overview

Features

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

How NPF (firewall) connects Entity context

The extracted context around NPF (firewall) shows recurring relationship patterns in the source. For example, NPF (firewall) → BSD license Another extracted example is NPF (firewall) → NetBSD. Use these groups to spot repeated connection types before inspecting the individual relationships.

NPF (firewall)

Top relations

License · 1
NPF (firewall) → BSD license
Operating system · 1
NPF (firewall) → NetBSD
Original author · 1
NPF (firewall) → Mindaugas Rasiukevicius
Release · 1
NPF (firewall) → October 17, 2012; 13 years ago (2012-10-17)
Repository · 1
NPF (firewall) → github.com/rmind/npf
Type · 1
NPF (firewall) → packet filter, Firewall
Website · 1
NPF (firewall) → www.netbsd.org/~rmind/npf/
Written in · 1
NPF (firewall) → C

Important terminology

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

npf netbsd packet filter features bsd stateful conf mindaugas rasiukevicius release written website firewalling iptables ipfw ipfilter pf custom free

NPF (firewall) relationships Subject–Predicate–Object triples

TTTA extracted 11 structured relationships around NPF (firewall). Examples in this analysis include NPF (firewall) → License → BSD license and NPF (firewall) → Operating system → NetBSD. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
NPF (firewall)LicenseBSD license1.00infobox
NPF (firewall)Operating systemNetBSD1.00infobox
NPF (firewall)Original authorMindaugas Rasiukevicius1.00infobox
NPF (firewall)ReleaseOctober 17, 2012; 13 years ago (2012-10-17)1.00infobox
NPF (firewall)Repositorygithub.com/rmind/npf1.00infobox
NPF (firewall)Typepacket filter, Firewall1.00infobox
NPF (firewall)Websitewww.netbsd.org/~rmind/npf/1.00infobox
NPF (firewall)Written inC1.00infobox
packet logginginstance ofFeatures0.80text
traffic normalizationinstance ofFeatures0.80text
random blocking are provided as NPF extensionsinstance ofFeatures0.80text

Related concept clusters Concept neighborhoods

The concept neighborhoods around NPF (firewall) bring nearby vocabulary together. In this analysis, examples include Netbsd, Packet and Conf. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • bsd licensed
    • Open-source
    • Piece
    • Portal
    • Software
    • Filter
    • Central
    • Example
    • External
    • Firewalling
    • Free
    • History
    • Licensed
  • packet filter
    • Features
    • Packet
    • Stateful
    • Central
    • Example
    • External
    • Firewalling
    • Free
    • History
    • Licensed
    • Links
    • Mindaugas
  • stateful packet inspection
    • Features
    • Filter
    • Central
    • Firewalling
    • Free
    • Licensed
    • Open-source
    • Packet
    • Piece
    • Portal
    • Software
    • Stateful
  • NPF (firewall)
    • Netbsd
    • Packet
    • Conf
    • Release
    • Website
    • Features
    • Developed
    • Example
    • External
    • History
    • Licensed
    • Links
  • npf (firewall)
    • Netbsd
    • Packet
    • Conf
    • Release
    • Website
    • Features
    • Developed
    • Example
    • External
    • History
    • Licensed
    • Links
  • features
    • Packet
    • Filter
    • Example
    • External
    • History
    • Links
    • Mindaugas
    • Rasiukevicius
    • References
    • Written
    • Conf
    • Custom
  • netbsd
    • Conf
    • Npf
    • Release
    • Website
    • Example
    • External
    • History
    • Links
    • Mindaugas
    • Rasiukevicius
    • References
    • Written
  • firewalling
    • Free
    • Licensed
    • Open-source
    • Piece
    • Portal
    • Software
    • Stateful
    • Packet
    • Npf

Connections between topic areas Semantic bridges

For NPF (firewall), one of the stronger structural bridges in this analysis connects NPF (firewall) with Overview. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.

Min side: 3
NPF (firewall)Overview · splits 6 ⟂ 9
NPF (firewall)Features · splits 10 ⟂ 5

Map overview Semantic statistics

NPF (firewall)

Nodes15
Edges14
Triples11
Avg. degree1.87
Density0.133333
Components1

Source & methodology

TTTA analyzes the structure around NPF (firewall) to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as Features & Overview, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — NPF (firewall) · EN edition · Analysis: TopicsToTalkAbout

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