Free layer software for linux

Layer-7 Packet Classifier for Linux is a packet classifier for Netfilter that identifies packets based on application layer (OSI layer 7) data. This means that it is able to classify packets as HTTP, FTP, Gnucleus, Kazaa, etc., regardless of ports.
It complements existing matches that classify based on port numbers, packet length, TOS bits, and so on. Combined with Linux QoS, it allows for full layer 7 packet shaping.
Main features:
- Patches for Linux 2.4 and 2.6
- Support for TCP, UDP and ICMP over IPv4
- Uses Netfilters connection tracking of FTP, IRC, etc
- Examines data across multiple packets
- Number of packets examined tunable on the fly through /proc
- Number of bytes examined tunable at module load time
- Distinguishes between new connections (those still being tested) and old unidentified connections
- Gives access to both Netfilter and QoS (rate limiting) features
- With the Netfilter "helper" match, you can distinguish between parent and child connections (e.g. ftp command/data)

libbehate is a library with implementation of BHT communication protocol.

This protocol is used in communication with Toyota Denso data collection terminals. Library itself uses librs232 for link layer.

Library is released under the term of LGPL license.

linkloop software is similar to ping, but tests connectivity at the link layer (layer 2) instead of the network layer (layer 3).
This works like the HP-UX linkloop utility. It was tested between Linux and HP-UX. There is also a "server-side" utility.
Enhancements:
- inkloop_reply replies only on the interface having received the packet, instead of all.

JideBuilder is a Groovy builder for the open source JIDE Common Layer. The project is based on the original SwingBuilder.

The goal of the project is having a builder for swing apps that seamlessly integrates default swing and jide components.

Porcupine is a web application server that provides an object oriented framework for developing web applications rapidly.

Many of the tasks required for building web applications as you know them, are either eliminated or simplified. For instance, when developing a Porcupine application you dont have to design a relational database. You only have to design and implement your business objects as classes, using the building blocks provided by the framework (datatypes). Porcupine integrates a native object database, no mapping required.

Another tedious task for web applications is the interface design, and the constraints imposed by HTML. QuiX, the servers integrated XUL motor, simplifies the interface design process. All you have to do is describe your applications interface in XML and write the appropriate event handlers. You dont have to waste time and money on widget implementations. QuiX comes with a variety of ready to use widgets, accelerating the development process.

Generally, every Porcupine application consists of three distinct layers. The first is the business layer consisting of the business objects which encapsulate the business logic.
The second layer binds the HTTP protocol with the first layers business objects. This layer is implemented using Python Server Pages or Servlets. If using XML-RPC, one common approach is to directly map an XML-RPC method to a business objects method.
The third layer, the presentation layer, usually consists of XML UI definitions and JavaScript event handlers.

The first two layers are executed server side and the third layer is executed on the client (browser).

Host enumeration is the act of determining the IP address of potential targets on a network. This can be done in both layer 2 and layer 3. Icmpenum project can send ICMP traffic for such enumeration.

The ICMP packets supported are: Echo, Timestamp, Information and Netmask. Furthermore, it supports spoofing and promiscuous listening for reply packets. Icmpenum is great for enumerating networks which allow ICMP traffic.

PerlIO::locale is a PerlIO layer to use the encoding of the current locale.

SYNOPSIS

use PerlIO::locale;
open my $filehandle,<<less