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Packet alteration framework for Linux and the umbrella project for software of the same
Netfilter is a framework provided by the Linux kernel that allows various networking-related operations to be implemented in the form of customized handlers
Netfilter
Userspace utility for Linux packet filtering
on 19 January 2014. nftables replaces the legacy iptables component of Netfilter. Among the advantages of nftables over iptables is less code duplication
Nftables
Linux firewall software
packet filter rules of the Linux kernel firewall, implemented as different Netfilter modules. The filters are organized in a set of tables, which contain chains
Iptables
Simplified netfilter interface
Uncomplicated Firewall (UFW) is a program for managing a netfilter firewall designed to be easy to use. It uses a command-line interface consisting of
Uncomplicated_Firewall
Resource limit method in Linux
developers have added controllers for the kernel's own memory allocation, netfilter firewalling, the OOM killer, and many other parts. A major change in the
Cgroups
Load-balancing software
IPVS is built on top of Netfilter. IPVS is merged into versions 2.4.x and newer of the Linux kernel mainline. Linux portal Netfilter and nftables Network
IP_Virtual_Server
Linux kernel interface for inter-process communication between processes
an interface to transport packets from netfilter to user-space. NETLINK_ROUTE6 NETLINK_TAPBASE NETLINK_NETFILTER NETLINK_TCPDIAG NETLINK_XFRM NETLINK_XFRM
Netlink
Techniques to alter a program
a similar manner to process network events within the kernel through NetFilter. When such functionality is not provided, a special form of hooking employs
Hooking
German programmer
of the free software project Osmocom and was formerly involved in the netfilter/iptables and Openmoko projects. He is a member of the Chaos Computer Club
Harald_Welte
Free Unix-like operating system kernel
ALSA, DRI, evdev, klibc, LVM, device mapper, Linux Network Scheduler, Netfilter Linux Security Modules: SELinux, TOMOYO, AppArmor, Smack Hardware (CPU
Linux_kernel
Data-network packet analyzer
traffic, all USB buses) [none] 8.nflog (Linux netfilter log (NFLOG) interface) [none] 9.nfqueue (Linux netfilter queue (NFQUEUE) interface) [none] 10.dbus-system
Tcpdump
Load-balancing software
LVS components depend upon the Linux Netfilter framework, and its source code is available in the net/netfilter/ipvs subdirectory within the Linux kernel
Linux_Virtual_Server
Family of Unix-like operating systems
ALSA, DRI, evdev, klibc, LVM, device mapper, Linux Network Scheduler, Netfilter Linux Security Modules: SELinux, TOMOYO, AppArmor, Smack Hardware (CPU
Linux
Intrusion prevention software framework
perform multiple actions whenever an abusive IP address is detected: update Netfilter/iptables or PF firewall rules, TCP Wrapper's hosts.deny table, to reject
Fail2ban
Software or hardware-based network security system
Flow of network packets through Netfilter, a Linux kernel module
Firewall_(computing)
Firewall management software
provides firewall features by acting as a front-end for the Linux kernel's netfilter framework. firewalld's current default backend is nftables. Prior to v0
Firewalld
Way to traverse IP address spaces without routing
Unix-like operating systems ipfirewall (ipfw): FreeBSD-native packet filter Netfilter with iptables/nftables: the Linux packet filter NPF: NetBSD-native packet
Network_address_translation
Mechanism to allow IPv6 hosts to communicate with IPv4 servers
Protocol with the PREFIX64 extension. Jool OpenWrt via the jool-tools-netfilter opkg package Tayga MacOS via the "Create NAT64 Network" in internet sharing
NAT64
Series of free software licenses
desist from distributing Netfilter's GPL-licensed software in violation of the terms of the GPL. Harald Welte of Netfilter was represented by Till Jaeger
GNU_General_Public_License
Linux user-space utility program
tc relates to the Linux kernel packet scheduler as iptables to netfilter. Both are user-space CLI programs that are used to configure their respective
Tc_(Linux)
Packet filter software
filter, a central piece of software for firewalling. It is comparable to netfilter (iptables), ipfw, and ipfilter. PF was developed for OpenBSD, but has
PF_(firewall)
Software toolkit
x Kernel-based Virtual Machine Java 1.5+ Python (2.4+) Linux kernel's Netfilter and ebtables for a bridging firewall DHCP server Free and open-source
Nimbus_(cloud_computing)
Version history of the Linux kernel
original on 3 February 2012. Retrieved 15 February 2013. Harald Welte, netfilter archeology: 18 years from 2.3 to 4.x, 5 December 2017 "Interview: Andrea
Linux_kernel_version_history
Internet public benefit organization
nlnet.nl. Retrieved 2025-08-25. "netfilter/iptables project homepage - About the netfilter/iptables project". netfilter.org. Retrieved 2024-02-12. "NLnet;
NLnet
Way of using computer memory
ALSA, DRI, evdev, klibc, LVM, device mapper, Linux Network Scheduler, Netfilter Linux Security Modules: SELinux, TOMOYO, AppArmor, Smack Hardware (CPU
User_space_and_kernel_space
Computer networking feature
Linux kernels, this is achieved by packet filter rules in the iptables or netfilter kernel components. BSD and macOS operating systems prior to Yosemite (OS
Port_forwarding
Project for adding Rust language to Linux kernel
EDAC evdev Kernel same-page merging (KSM) LIO Framebuffer LVM KMS driver Netfilter Netlink nftables Network scheduler perf SLUB zram zswap Process and I/O
Rust_for_Linux
Connection tracking network security system
if connections are idle for longer than the time-out Computer security Netfilter Goralski, Walter (12 May 2017). The illustrated network: How TCP/IP works
Stateful_firewall
User-space portion of Linux kernel packet filtering system
8 ed.). Archived from the original on 2012-02-16. Retrieved 2009-02-08. "netfilter/iptables project homepage". 2009-02-06. Retrieved 2009-02-08. Free and
Ipchains
Firewall software
Shorewall is an open source firewall tool for Linux that builds upon the Netfilter (iptables/ipchains) system built into the Linux kernel, making it easier
Shorewall
Software framework for audio
ALSA, DRI, evdev, klibc, LVM, device mapper, Linux Network Scheduler, Netfilter Linux Security Modules: SELinux, TOMOYO, AppArmor, Smack Hardware (CPU
Advanced Linux Sound Architecture
Advanced_Linux_Sound_Architecture
Australian computer programmer
Hierarchy Standard. Russell wrote the packet filtering systems ipchains and netfilter/iptables in the Linux operating system kernel. Linus Torvalds referred
Rusty_Russell
programming language that allows developers to write extensions to the Iptables/Netfilter components of Linux using a simple scripting language based on Reverse
IpTables_Rope
Security component that augments a firewall or NAT employed in a computer network
mappings through the NAT for the FTP data channels. The Linux kernel's Netfilter framework, which implements NAT in Linux, has features and modules for
Application-level_gateway
Collection of hash functions
extension of it that produces 96-bit rather than 32-bit hash values. The Netfilter firewall component of Linux, where it replaced an earlier hash function
Jenkins_hash_function
Linux distribution
following features Stateful packet-inspection firewall based on Linux Netfilter Proxy server with content filter and catching-updates functions (e.g.
IPFire
Firewall software
iptables written to ease the customization of the Linux kernel's firewall netfilter. FireHOL is free software and open-source, distributed under the terms
FireHOL
6.39 POSIX, ACLs, MAC chroot, seccomp, Namespaces, SELinux, AppArmor Netfilter, varied by distribution Yes Yes Yes 0 0 0 6 June 24, 2004; 21 years ago (2004-06-24)
Comparison of operating systems
Comparison_of_operating_systems
Dynamic memory management in the C programming language
Retrieved 2011-09-18. "kmalloc()/kfree() include/linux/slab.h". People.netfilter.org. Retrieved 2011-09-18. Levine, John R. (2000) [October 1999]. "Chapter
C_dynamic_memory_allocation
Firewall TCP/IP IPv6 IPX PPP PPPoE DHCP Bridge TUN/TAP SSH OpenVPN Linux netfilter iptables/nftables Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes FreeBSD IPFW2
Comparison of open-source operating systems
Comparison_of_open-source_operating_systems
License allowing software modification and redistribution
lack the necessary rights to copy, distribute, and make the software 'netfilter/iptables' publicly available." Because the defendant did not comply with
Free-software_license
Operating-system level virtualization technology
allows a container to have its own IP addresses, as well as a set of netfilter (iptables), and routing rules. Devices If needed, any container can be
OpenVZ
Personal firewall
Firestarter is a personal firewall tool that uses the Netfilter (iptables/ipchains) system built into the Linux kernel. It has the ability to control
Firestarter_(firewall)
Arbiter on a node in a packet switching communication network
The Linux kernel's packet scheduler is part of the network stack, together with netfilter, nftables, and Berkeley Packet Filter.
Network_scheduler
NuFW is a software package that extends Netfilter, the Linux kernel-internal packet filtering firewall module. NuFW adds authentication to filtering rules
NuFW
Linus Torvalds ELF, others monolithic Ipfirewall (1.1 –) ipchains (2.2 –) Netfilter (2.4 –) nftables (3.13 –) XDP (4.8 –) Yes Yes Yes cgroups, chroot, Lguest
Comparison of operating system kernels
Comparison_of_operating_system_kernels
Communications protocol
software-based IP routers. For instance the conntrack feature of the Netfilter framework used by Linux. RFC 3334 - Policy-Based Accounting RFC 3917 -
NetFlow
Lawsuits around open-source software
For about a decade, McHardy had contributed to the development of the Netfilter subsystem that provides network‑related operations to the Linux kernel
Open source license litigation
Open_source_license_litigation
Modular tool designed to allow computer and network log sharing
supports multiple log type, including linux process accounting logs, netfilter alerts, tcpdump traces and NFDUMP NetFlows. (3) With a flexible anonymization
FLAIM
Australian community interested in Unix-like operating systems
"Tridge" Tridgell (Samba), and Paul "Rusty" Russell (Linux Kernel, notably Netfilter and the 2.6 modules rewrite), and Mary Gardiner founder of the Ada Initiative
Linux_Australia
Linux distribution
16.04 desktop images. Uncomplicated Firewall — program for managing a netfilter firewall designed to be easy to use. It uses a command-line interface
Outline_of_Ubuntu
Free and open-source library for 3D graphics rendering
ALSA, DRI, evdev, klibc, LVM, device mapper, Linux Network Scheduler, Netfilter Linux Security Modules: SELinux, TOMOYO, AppArmor, Smack Hardware (CPU
Mesa_(computer_graphics)
Website tracking violations of GNU licenses
kernel developer who had been actively enforcing the GPL license on his netfilter/iptables code since late 2003. Since then, other developers have given
Gpl-violations.org
firewalls include complete SIP Application Layer Gateway support Linux Netfilter's SIP conntrack helper fully understands SIP and can classify (for QOS)
List_of_SIP_software
Linux distribution
against a Radius server, a Kerberos 5 KDC (such as Active Directory KDC) Netfilter – Firewall, Packet Filter and Stateful Packet Inspection (SPI), Layer
Zeroshell
Firewall software
of an old (2001) version of ipfw. Free and open-source software portal netfilter/iptables, a Linux-based descendant of ipchains NPF, a NetBSD packet filter
Ipfirewall
Categorization of computer network traffic
observation set is taken into account. Both the Linux network scheduler and Netfilter contain logic to identify and mark or classify network packets. Operators
Traffic_classification
Tracking connections between health system-associated computers
Export An alternative to the use of flow protocols is connection tracking. Netfilter Connection Tracking Portals: Medicine Law Science Government Technology
Health_network_surveillance
libipq to interface with Linux's iptables packet filter. iptables at netfilter.org libipq subversion repository Linux Man Page A quick intro to libipq
Libipq
Linux networking toolkit
ifpps: a top-like kernel networking statistics tool flowtop: a top-like netfilter connection tracking tool with Geo-IP information curvetun: a lightweight
Netsniff-ng
writing, Zeta-TCP has been implemented as software modules for Linux (Netfilter Kernel Module), Microsoft Windows 10 down to XP and related Windows Server
Zeta-TCP
NETFILTER
NETFILTER
NETFILTER
NETFILTER
Boy/Male
Indian, Kannada
Tamil Artist
Girl/Female
Australian, Danish, Finnish, Hebrew, Swedish
Star of the Sea; Beloved
Girl/Female
Muslim
The earth, Desire, Labour, Exertion, Endeavour
Girl/Female
Christian, Hebrew, Indian
Beautiful Flower; Hill
Boy/Male
Hindu, Indian
With a Virtuous Army
Boy/Male
Hindu, Indian, Sanskrit
Owner of a House; Powerful; Strong
Male
Scottish
Scottish name derived from Crìosd, CRÌSDEAN means "Christ." Used as a form of English Christopher, meaning "Christ-bearer."
Girl/Female
Arthurian Legend
Mother of Alexandre.
Male
English
 Middle English name HAIG means "to cut, to chop." Compare with another form of Haig.
Girl/Female
Arabic, Muslim
Perfumed
NETFILTER
NETFILTER
NETFILTER
NETFILTER
NETFILTER