l7-filter

l7-filter logo

l7-filter is a software package which provides a classifier for Linux's Netfilter subsystem which can categorize Internet Protocol packets based on their application layer data. The major goal of this tool is to make possible the identification of peer-to-peer programs, which use unpredictable port numbers. There are two versions for this software. The first is implemented as a kernel module for Linux 2.4 and 2.6. The second experimental version was released in December 2006 which runs as a user-space program and relies on netfiler's user-space libraries for the classification process.

Both versions of l7-filter use regular expressions (though the user-space and kernel modules use different regular expression libraries) to identify the network protocol. This technique, used in conjunction with Linux's QoS system, allows application-specific yet port-independent traffic shaping.

All versions of l7-filter have been released under the GNU General Public License.

External links

l7-filter's website
protocolinfo.org/wiki/Main_Page Used to be a wiki with a lot of l7-filter information

Firewall software

Linux

Apps	ipchains Netfilter L7-filter NuFW ipset iptables nftables FireHOL Firestarter Shorewall Uncomplicated Firewall MoBlock Privoxy Squid

Distros	SmoothWall IPCop IPFire OpenWrt Zeroshell Untangle

BSD

Apps	PF NPF ipfirewall IPFilter

Distros	M0n0wall SmallWall OPNsense pfSense

OS X

Windows

Commercial	Check Point Integrity Comodo Internet Security Glasswire K7 Total Security Kaspersky Internet Security McAfee Personal Firewall Plus Microsoft Forefront Threat Management Gateway Norton 360 Norton Personal Firewall Norton Internet Security Online Armor Personal Firewall Outpost Firewall Pro PC Tools Internet Security Symantec Endpoint Protection Trend Micro Internet Security Windows Firewall Windows Live OneCare WinGate WinRoute ZoneAlarm

Open-source	PeerBlock PeerGuardian

Appliances

This article is issued from Wikipedia - version of the Tuesday, July 08, 2014. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.