Free network in software for linux

Network FIFO project is a network object that provides data transfering tunnel across network in first in/first out manner.

Simply put,

fifo server file is: monotech_fifo.pl
This script require Net::Server::NonBlocking at least 4.1(you can grab from CPAN)

% perl monotech_fifo.pl < address > < port >

and itll show up like this:

[root@WongWai monotech_fifo]# perl monotech_fifo.pl 192.168.3.52 12000
Listen on 192.168.3.52:20005
Listen on 192.168.3.52:12000

12000 is the port in which the fifo resides.
20005 is the port in which backoffice management resides.

--------------------------------------------------

port 20005 in which the management control resides can be accessed by "admin.pl"

% perl admin.pl < address >

for example

perl admin.pl 192.168.3.52

itll show something like this:

message>

where you can type some commands and press enter

the commands are:

message>readers
message>flush

(flush is the command that read all socket buffer of the admin client socket)

to show all reader in the fifo, it is very useful when some reader is connection disconnected by his ISP or readers machine hangs, the fifo will hold his connection forever (It is because the monotech_fifo.pl doesnt set SO_KEEPALIVE and TCP_KEEPALIVE which will be fixed in the future)

and

message>kill_reader[tab]< fifo name >

to kill any connection of < fifo name >

This package is heavily used by my company, so it is likely reliable.

network jack is an Internet troubleshooting and information gathering tool. It provides a Web interface to several common command-line tools, including ping, traceroute, dig, and whois, as well as a subnet mask and CIDR block calculator.
Current Modules which you can find in the application:
Pinger
- Ping a host on the internet (currently only IPv4)
Tracer
- Traceroute to a host on the internet from the web server (currently only IPv4)
Digger
- Do a DNS Dig of a hostname or IP address (for reverse lookups)
Drooler
- block list lookup (aka RBL query, blackhole lookup)
Whoser
- lookup for domain names and IP addresses / blocks
Netter
- Mask / CIDR calculator
Linker
- Front" page for the tools, provides spot for links
Main features:
- It is intended to be easy to add new modules
- Seperates html code into its own file so can be customized without modifying the program files

Network Probe and protocol analyzer is the ultimate tool for traffic-level network monitoring, troubleshooting, analysis,
If your network is crawling to a standstill, and you suspect there might be a problem with the network traffic, Network Probe will quickly help you identify what is causing the problem, show you who is generating any troublesome traffic, and where the traffic is being transmitted.
Network Probe will collect traffic statistics for all protocols, hosts, and conversations on your network, and show you all the top talkers and listeners on your network. Hosts generating large amounts of traffic such as music and movie streaming, playing online games, or listening to streaming media are easily identified.
Main features:
- Watch in real time which protocols are used on your network
- Watch in real time which hosts are active on your network and the Internet
- Watch in real time which conversations are taking place on your network and to and from the Internet
- Watch in real time detailed protocol statistics per host
- Watch in real time detailed protocol statistics per conversation
- Watch in real time network card details for your network
- Watch traffic amount of selected entries relative to the total and filtered traffic
- Watch traffic amount over time for any host, conversation, and protocol
- Watch in real time network throughput for the entire network segment
- Inspect detailed logged statistical data from days and weeks earlier
- Filter out and search for selected protocols, hosts, conversations, and network cards
- Sort network traffic by amount of data transmitted or received
- Export network traffic statistics data
- Configure users with restricted access to statistical data
- Password protected login

network-config is a simple network configuration tool.

Network-config is a simple and easy to use program that helps configuring the network interfaces for linux-based operating systems. It allows to have multiple configurations for the same computer and to easy configure NAT for internet sharing.

It can also be used to scan for wireless networks. It is written in perl and uses gtk2+, but also works as a command line program.

Network Pipemeter is a tool for measuring available bandwidth between hosts. nepim is also useful to generate network traffic for testing purposes.
nepim operates in client/server mode, is able to handle multiple parallel traffic streams, reports periodic partial statistics along the testing, and supports IPv6.
nepim has been tested under Linux, Solaris and FreeBSD, though it should work under other platforms as well. If you manage to build nepim for different systems, please send the patch.
- nepim is useful to assess the throughput at the transport layer (TCP or UDP) as seen by applications.
- nepim runs single-threaded and should impose very light burden on your CPU. Unless, of course, your testing hosts have relatively high network bandwidth compared to low CPU power.
- One single server can service multiple clients simultaneously.
- As of nepim 0.11, one single client can interact simultaneously with multiple servers. For instance, suppose you want to test, from a single client, two remote servers, one located at 10.0.0.1,2000 and another at 192.168.0.1,3000:
- nepim -c 10.0.0.1,2000/192.168.0.1,3000
- The server listens to both TCP and UDP sockets. The client by default uses TCP sockets. Use the "-u" client option to switch the client operation to UDP.
- By default, only the server sends traffic towards the client. Use the "-s" client option to reverse the behavior, then only the client will send traffic. Use the "-d" client option to make both client and server to send traffic.
- Use the "-r" client option to establish an upper bit rate limit. Without a rate limiting option, nepim sends as fast as possible. See also "-R" below. Please notice the rate is specified in bps (bits per seconds); for instance, the following example states a rate limit of 100,000 bps (100 Kbps):
- nepim -c 10.0.0.1 -r 100000
- Use the "-R" client option to establish an upper "packet" rate limit (outbound rate limit for transport layer segments). Without a rate limiting option, nepim sends as fast as possible. If both "-r" and "-R" are given, nepim limits the sending rate at the lower of those bounds.
- Use the "-n" client option to run multiple parallel traffic streams.
- Use the "-b" server option to make the server to listen on specific local addresses.
- Use the "-6" option to disable IPv6 support.
Enhancements:
- Support for randomizing the UDP destination address/port has been added in order to put stress on routers with on-demand (dynamic) forwarding table caches.

poker-network project includes a poker server, a client library, an abstract user interface library, and a client based on it.

The server deals the cards and checks the user actions using a poker game engine (poker-engine). It listens on a TCP/IP port and understands its own specific protocol. The persistent information is stored in a MySQL database.

The client library implements the poker-network protocol for the client. The abstract user interface library provides a framework based on the client library and suited to implement a user friendly client.

This program will help you to view network activity on your network device such as eth0, ppp0 and so on.

It put animated, graduated, icons near the KDE tray.

Network Traffic Analyzer analyzes the network traffic on multiple network devices and creates HTML statistics with some network usage graphs. Sometimes it is good to know, how the network is used, how many bytes were received and how many bytes were sent.Therefore, here is Network Traffic Analyzer, which creates simple network usage statistics.


Such statistics can tell you, how good your network connection really is (who cares about what Internet provider say, when was the network down, which time is the best time for downloading large packages of data etc. etc. Or with this software you can just better imagine, how many traffic can your home computer generate.