Free network monitor protocol analyzer software for linux

Network Traffic Analyser provides a script-driven network traffic monitor.

Network Traffic Analyser (formerly known as sniffer) is designed to be an extremely powerful, configurable, and versatile tool for monitoring network traffic.

It can be used as a plain sniffer, as a tool for accounting, dynamic firewall updates, and many more things.

It features scripting support and an event-driven architecture.

The idea behind this project is to create a powerful tool for playing around with network traffic. The basic concepts are simplicity and flexibility. Instead of building tool that does something specific (and does a good job at it), were trying to build a tool that will be able to do whatever you want it to do (and still be good at it :).

To put it very simply, you write a script that will be invoked for every packet that passes through your network. You write your scripts in a Tcl, fully blown, interpreted programming language. That fact guaranties that you wont be constrained in your creativity.

Skipole Network Monitor project is a simple network monitor with built in web server.

It allows the user to input host IP addresses, it then pings these hosts every five minutes and displays their status via a built-in web server, on port 8000.

So calling http://your_pc_address:8000 will display pages showing green, yellow or red host or group symbols.

Each host is pinged four times every five minutes, and symbols are displayed as:

green : if three or four pings are successfull
yellow : if only one or two are successfull
red : if all four fail

As well as hosts, group symbols are displayed, and can be opened to show hosts, or sub-groups nested within. The operator can create groups, and sub-groups via the gui.

Deep Network Analyzer is an flexible, open and extensible deep network analyzer (software server) and architecture for gathering and analyzing network packets, network sessions and applications protocols, passively off enterprise class networks.
DNA is designed to be used for Internet Security, Intrusion detection, Network Management, Protocol and Network Analysis, Information Gathering, Network Monitoring applications.
DNA runs as a distributed application under a Java Virtual Machine (JVM) environment and is portable across many OS environments, including: Network appliances, Switches and Routers.
Main features:
- Deep packet and session processing (layers 2-7)
- Configurable processing and output:
- Layer 4 Packet flows
- Layer 4-7 Stateful Sessions flows (client/server flow pairs)
- Layer 7 Packet and Session Application protocol Parsing (HTTP, DNS, P2P, VoIP, etc)
- Application protocol parsing toolkit enables easy devlopment of new new protocol parsers.
- Support for both symmetric and asymmetric routing links.
- Targeting based full session capture facility, like a real time targeted TCPDump.
- Flexible targeting from IP address, port tuple to application sensitive targeting.
- Configurable and extensible output adaptor utilizing OpenAdaptor able to send output to a varity of resources including: Flat file, Oracle, MySQL, MSSQL, Sybase, Sockets, JMS, RMI, WebService.
- Extensible real time collection engine portable across many OS/Packet processing environment :
- Specialized linux drivers mechanisms
- Network Appliances
- Network Switches / Routers
- Highly paralleliszed for increased performance over multi processor environment
- System metadata dictionary externalizes processing type definition
Enhancements:
- Adoption of OpenAdaptor(tm) as the Output Adapter mechanism.
- Support for local-only administration.
- A new targeted packet capture parser, new run scripts, and a new install mechanism.
- Many bugfixes.

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

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 Management Center project is a comprehensive network device management tool. After entering each network device, every detail can be tracked and monitored.
Having this information accessible simplifies the process of troubleshooting a network.
Manage your network with a free web-based network management tool. Troubleshooting your network will become much easier with all your network information just a few clicks away.
Add all your network devices and monitor the details about each device, and any changes that are made to the network device. Multi permission levels allow complete control over the system.
Keep your network organized and under control, network management software is based on PHP and MySQL.
Enhancements:
- Some bugs found in the forms library for the network management center software were fixed.