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Please see http://firehol.org/ for up-to-date releases and information. FireHOL is a stateful iptables packet filtering firewall configurator. It is abstracted, extensible, easy and powerful. It can handle any kind of firewall, but most importantly, it gives you the means to configure it, the same way you think of it.
py-PF is a pure-Python module for managing OpenBSD's Packet Filter. It aims to combine the flexibility of PF's C API and the power of Python, making it easier to manage PF data and to integrate firewalling capabilities in more complex applications.
nf_quota is an ip-based traffic accounting project. IPs can be added to users. It provides a kernelmodule that hooks onto netfilter and counts every packet passing a specified interface. If the quota for a ip/user is exceeded, the packet is dropped.
Detect Flooder IPs, Reduce Attack Surface against HTTP Flood Attacks
This module provides attack surface reduction enhancements against the HTTP Flood Attacks at the web application level. Massive crawling/scanning tools, HTTP Flood tools can be detected and blocked by this module via htaccess, firewall or iptables, etc. (like mod_evasive)
You can use this module by including "iosec.php" to any PHP file which wants to be protected.
A firewall configuration project based on Linux 2.6.x and iptables. It has a web interface with an intuitive Webmin module, or you can edit a XML file. You can define the different firewall elements (zones, hosts, networks) and then set the services
PHANTUM - Punch-Hole Access for NAT Traversal of UDP in a Module; Built on top of Samy Kamkar's 'chownat' script, PHANTUM allows for pure client-agnostic TCP services to be tunneled over UDP and hosted behind NAT infrastructures.
ip-session gets info of network trafic, such as sip, dip, sport, dport, etc. from linux kernel; gets account info of each traffic, such as in/out bytes/pkgs, etc.; else, gives session management function, such as query/del, etc.
Linsec is a shell script firstly designed for slackware linux 10 and now supports most of linux distros. Linsec improves security of Linux systems (kernel parameters, network behaviour, iptables, critical files permissions)
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The Knock Project is a collection of security tools providing increased client/server authentication. The server and its functionality is provided by the netfilter kernel interface. Included are the daemon, a GNU/Linux client and a Windows client.
IP Traffic Volume: Logs (counts) in- & outgoing bytes through network device(s) using kernel iptables. Highly configurable as to which bytes are logged, e.g. to/from specific ports or ip-addresses. Data displayed in html via cgi or plain ascii to console
We have just released a new set of files.
This project will consist of a module for Firewall Builder. This module will be an add-on to Firewall Builder that will allow a user to create, compile, and apply firewall rules to a machine with Netnice Packe
Bash script that uses iproute2 and shapecfg (shaper.o) to limit incoming and outgoing traffic on a linux router. Also haves option for supporting more than 100 shapers via kernel patch.
SynAckFlood protect your linux box from portscan attacks, make a ficticious responce parallel to kernel, and portscanner show you that all ports are openned
The aimed users of this project are ISP, that uses Linux and Linux-based hosts as routers/servers. Requirements : Perl interpreter, iproute2 and iptables or ipchains. These perl scripts, will configure Linux kernel, routing, packet filter and QoS.
A Webmin module for maintaining the FreeBSD Firewall.
This module allows the user to configure the FreeBSD firewall via webmin.
Operating systems supported: Freebsd 4.7 and 5.x
This module runs under webmin > 1.070
A very simple Linux firewall scripts designed for home users/small office users. Requires Linux kernel 2.4.x, ipcalc and iptables to run. These scripts have been tested on Trustix 1.2, 1.5 and 2.0 (Beta), Redhat 7.2, and 7.3 only.
...The primary design goals are security, ease of use, and performance, in that order. It takes advantage of advanced features of iptables, tcpwrappers, and the Linux kernel.
Loggrep greps kernel logfiles on ipchains and iptables firewall log entries and features the ability to filter against given entries (date, IP, port, ..).
It also features quasi-detection of protscanning, line count
and html output.
IPFC is a distributed management solution for security module (firewall, nids). Security module can be packet-filtering (ipfw,netfilter,ipf ...), NIDS or any other servers (syslog...) or embedded devices.
1.68MB floppy using the 2.4.6 kernel which includes IPTABLES. Most if not all packages in this dist are out of date. I would recommend using LEAF at http://leaf-project.org/ which is more up to date.