Free network pipemeter software for linux

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.

Network Tracker application is a user (MAC) tracker daemon, for big LANs (campus).
The Network Trackerd builds a table which records which user is connected on which port of a switch by scanning the devices with SNMP in your inventory which is in a MySQL database. Trackerd keeps that table up-to-date by scanning the network regularly.
Thus, you will have the opportunity to know exactly where a user (MAC, IP, UID) is connected on your network !
Your devices are also checked with ping and SNMP, and you are informed with e-mail when any of the devices is not alive.
More over, you may produce various reports about your network infrastructure on the web (cgi) or by using other tools.
Network tracker eases especially to find and shutdown the switch port of the users, when their PCs on the network start to spread viruses or warms using lots of bandwith; so you are able to stop that kind harmfull traffic on the network.
Main features:
- Collects all the MAC addresses and port numbers from CAM tables of the switches.
- Finds IP addresses of the MACs from ARP tables of the routers.
- Finds LDAP uid of the user.
- Check devices on the network with both ping and SNMP for better reliability.
- The daemon sends 2 self check e-mail per day.
- Developped with C.
Enhancements:
- trackerd is now multi-threaded and works very quickly because a new thread is created for each network device.
- MAC tracking code has been reimplemented for multi-threaded use.
- Wireless access point support has been added.
- gnuplot graphics are prepared, showing the active number of users like MRTG graphs.
- tracker now accepts MAC addresses in free format.

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 Time Tools (NTT) is a set of network tools designed to provide monitoring of a network and the services on that network, and provide various reports on the hosts/services and optional alerts via email, pager, and cellphones. It also has the capability to send messages on user-specified services to email, pagers and cell phones.
Main features:
- Bandwidth measurement based on time intervals
- Checks Service availibilty on specified Hosts for the following protocols:
- ftp
- ssh
- telnet
- dns
- http ( specific pages )
- www ( simple head )
- pop
- nntp
- imap
- irc
- smtp
- Ability to send alerts based on user specified services to:
- pagers
- cell phones
- email
- A frontend that displays a daily report that can be viewed by a web browser or cell phone.
- views specific servers
- views specific services
- views bandwidth measurements
- view alerts
- Data stored in a Mysql Database
- Easily configurable via an XML config file
- Runs in Daemon or one-shot mode

gnetload network load meter project is a network and ISDN load meter that is similar to xisdnload, but works in a distributed environment.
It includes an agent (devstata) that runs on machines with interfaces to be monitored and periodically sends status information over the network. A display program (gnetload) collects and displays the data.
Both can be run on the same machine, or be used to report on the state of a dedicated router on another machine. Using multicast or broadcast addresses, data can be fed to more than one instance of gnetload. A menu for taking network interfaces up and down is also provided.
Usage: ./gnetload [-I] [-t tickscale] [-g geometry] [-d] [ip]:port
Enhancements:
- The config script was updated to build with GTK2 and GCONF2 where available.
- There are no other code changes.

Manage your network with a free Network Monitoring Software application.
Network Management Tool is an organized way to manage your network. 100% web-based network management.
Manage your network devices with ease. 100% Free Network Managment Software! Manage all your network devices, routers, switches, firewalls, hubs, and more.
Enhancements:
- A display bug that occurred when viewing the comments on a device was fixed.

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 Query Tool is a one-stop solution for obtaining information about a domain name or an IP address.
Instead of manually using a variety of shell commands, or visiting numerous websites to investigate a host, just load Network Query Tool in your browser and enter the hostname or IP. NQT does the rest, as is evidenced by this sample output.
Main features:
- Reverse lookup - resolves an IP address to a hostname (if one exists) or vice versa
- DNS query - aka Dig, requires a dig binary on your system
- Whois (WWW) - gets domain registration information. Now supporting just about every known TLD, gTLD, and ccTLD.
- Whois (IP) - gets IP owner information. Supports all IP blocks maintained by ARIN (US), RIPE (Europe), JPNIC (Japan), APNIC (China/Asia-Pacific), BRNIC (Brazil), LACNIC (Latin America), AFRINIC (Africa), and KRNIC (Korea).
- Check port - Determine whether or not a port on the target host is open. Defaults to port 80.
- Ping - performs a 5-packet ping to the target, requires a ping binary.
- Traceroute - performs a traceroute to the target, requires a traceroute binary.