Lcrzo is a network library.
Lcrzoex is a program containing usage examples for the library lcrzo.
Presentation of lcrzo
Lcrzo is a network library.
Its main objective is to easily create network test programs.
This library provides network functionnalities for Ethernet, IP, UDP,
TCP, ICMP, ARP and RARP protocols. It supports spoofing, sniffing,
client and server creation. Furthermore, lcrzo contains
high level functions dealing with data storage and handling.
Using all these functions, you can quickly create a network test
program. Lcrzo, which means "Laurent Constantin RéZO" (RéZO=Network in
French), is available under the GNU LGPL
license. This library was successfully installed under Linux, FreeBSD
and Solaris.
The library lcrzo provides :
+ network functionnalities :
- address conversion
- packet encoding/decoding/printing
- spoofing
- real/virtual UDP/TCP clients/servers
- sniffing
- device(network board) dealing
- etc.
+ and general functionnalities :
- data conversion
- chained list
- IPC
- etc.
Presentation of lcrzoex
Lcrzoex is a program containing usage examples for the library lcrzo.
Actually, lcrzoex contains more than 150 examples. The main objective
of lcrzoex is to teach you how to use the library lcrzo. Every
example can be compiled alone and modified to match your needs.
Examples provided by lcrzoex can be used in the following contexts :
- discover the Ethernet address of a computer (examples 2, 3, 134,
etc.)
- sniff your LAN to detect what's going on (examples 7, 8, 9,
etc.)
- check the checksums created by a network program which isn't
working (examples 16, 17, 18, etc.)
- intercept a session and replay it as many times you want to
strictly test your application (examples 10, 11, 12, 22, etc.)
- verify if a router is well configured even if the needed
computers are down (examples 48, ..., 53, etc.)
- check if your router/firewall/computer blocks
- IP protocols (examples 29, ..., 34, etc.)
- IP options (examples 29, ..., 34, 73, ..., 79,
etc.), source routing (examples 45, 56, 59, 62, etc.)
- IP fragments (examples 44, 55, 58, 61, 72, etc.)
- TCP options (examples 48, ..., 53, etc.)
- ICMP types (examples 65, ..., 70, etc.)
- ARP poisoning (examples 80, 81, 82, 83, etc.)
- create a tcp/udp client with a special local port (examples 85,
89, 86, 93, 97, etc.)
- convert between numbers (examples 139, ..., 148, etc.)
- etc.
Supported platforms
Lcrzo was successfully installed on the following platforms :
- FreeBSD 3.1, 4.0 (Intel386)
- Linux Debian 2.1, 2.2 (Intel386)
- Linux Mandrake 7.0 (Intel386)
- Linux RedHat 5.0, 5.2, 6.1 (Intel386)
- Linux Slackware 3.4 (Intel386)
- Linux SuSE 5.1, 6.4 (Intel386)
- Solaris 2.5, 2.6 (Sparc)
- Solaris 2.7 (Intel386)
Lcrzo was deeply tested under Linux.
Download
Versions 3.x of the
library lcrzo are available
here.
The lcrzoex program is included in lcrzo library's sources.
If you want to be informed when a new version appears, drop
me a note by email.
Versions 1.x and
2.x are obsolete
(to be used only for old projects).
Please, give me feedback
Your feedback (bugs, improvements, etc.) helps the
evolution of lcrzo.
Further, the more I know it is used, the more it motivates
me to developp.
I'm also interested in the programs you'll developp with lcrzo.
The way you use it helps me to find new functionalities and
ideas.
So, do not hesitate to
contactme.
