Network Flow Tools

What is Network Flow?

Network Flow Tools is a series of communications between two end points which are limited by opening and closing sessions. There is a lot of data in one stream. Most routers offer the ability to collect this stream for analysis. Network flow monitoring is often the best way to resolve intermittent network performance problems and ensure Service Quality (QoS) for key applications and services. 

Also referred to as network traffic analysis, analysis of bandwidth utilization or bandwidth monitoring, monitoring network flow gives you an important level of visibility for effective network and infrastructure management.

Network Flow Monitoring Tool

The network flow monitoring tool tracks the flow of key applications and services across all areas of the network - devices, servers, link connections, etc., and offers insight into network bandwidth utilization. They can also map historical trends for capacity planning and proactively identify security problems. 

The network flow monitoring tool uses stream-based technologies such as NetFlow from Cisco to identify, monitor and analyze application and network traffic. Some of the capabilities of network flow monitoring tools include .

Real-time bandwidth monitoring, and historical user trend mapping: Real-time monitoring allows administrators to identify interfaces, links, applications, users and protocols that use bandwidth. For example, a good network flow monitoring tool can highlight bandwidth utilization via LAN, WAN links and certain devices, identifying internal and external sources / destinations. It should also be able to report Top Shippers, Top Protocols, Top Applications that use bandwidth.

Implementing a Quality of Service (QoS) policy: By default, each network channel operates for the best effort - each application gets the same priority, whether it's VoIP services that are important for business, or user video streaming content. QoS policy is very important to ensure that important business applications get enough bandwidth.

Identifying Historical Trends: By analyzing patterns and use of traffic over a period of time, network flow monitoring tools can identify trends in bandwidth usage and potential congestion. Historical data can also assist administrators in capacity planning and verifying bandwidth-based billing, including "explosive" bandwidth services with Network Flow Tools.

Identifying abnormal bandwidth usage: By monitoring real-time bandwidth usage and historical bandwidth trends, monitoring network flow can proactively identify security problems such as DDos attacks, unauthorized downloads and other potentially dangerous and dangerous network behavior. 

Network flow monitoring can be your best ally for forensic and security analysis by automatically identifying high traffic flows to unsupervised ports, exposing unauthorized applications such as file sharing and video streaming, monitoring traffic volume between source and destination pairs, and detect failed connections.

Essential Ability

Effective network flow monitoring provides peace of mind, allowing you to have confidence that your network is safe and your bandwidth is allocated effectively. When considering network flow monitoring tools look for capabilities such as:

Support for Popular Flow Formats: Ability to monitor NetFlow, sFlow and JFlow, with support for switches and routers from vendors such as Cisco, Extreme, Juniper, HP and more Visibility into Network Bandwidth Utilization: Complete, real-time visibility into QoS and how your network bandwidth is used to ensure optimal network performance.

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By monitoring network flow, you can also ensure application performance, monitor network traffic priority policies, and save money by eliminating expensive bandwidth utilization problems. Monitoring devices in the network flow must be possible:

  • Configure the flow of devices that are automatically activated
  • Determine exactly which users, applications or hosts use network bandwidth
  • Track and resolve network traffic or congestion problems
  • Make sure important business applications get the bandwidth they need
  • Measure bandwidth usage
  • ISP provider billing verification
  • Plan nails in use to avoid packages or delays that fall
  • Receive real-time alerts about violating bandwidth usage
  • Secure your network
  • Identify the introduction of viruses and worms
  • Detect DOS attacks and other malicious activities directed at your network
  • Network monitor for unauthorized use of applications; easily detect streaming audio, video, or file sharing applications Network Flow Tools.

Where to Get Network Flow Monitoring

A good example of effective network flow monitoring capabilities is WhatsUp Gold. This includes network flow monitoring capabilities called Network Traffic Analysis. WhatsUp Gold's Network Traffic Analysis feature is a powerful diagnostic and warranty service tool including all the requirements listed above.

Mapping the Flow of Networks to Business Units

Data flows from multiple devices and ports can be grouped together by business functions that allow reports to be generated by business use or units, rather than individual ports. This functionality can be utilized by reporting engines and thresholds that provide the ability to respond quickly to traffic jams that affect the business.

Support for Popular Flow Formats

It offers support for all popular stream management formats, including NetFlow, sFlow, J-Flow and IPFIX. WhatsUp Gold Network Traffic Analysis also offers support for the latest Cisco NetFlow implementation called NSEL (NetFlow Secure Event Logging), which is available on the ASA product line. This works with a list of switches and routers from vendors such as Cisco, Extreme, Juniper, HP, and more in Network Flow Tools.

Strong Reporting

Network Traffic Analysis WhatsUp Gold collects NetFlow, sFlow and J-Flow records from routers and switches and converts them to useful reports - Top Protocols, Top Applications, Top Senders, Top Conversations and more - that track real-time usage and trend history.

For example, the Top NBAR Application report offers a complete view of NBAR traffic so you can accurately diagnose application performance issues and bandwidth constraints, without having to dig deeper into the flow of traffic. The QoS report offers an integrated view of pre-policy and post-policy traffic side by side, including dropped or suspended packages, so network administrators can easily identify critical problems - such as router saturation - which can affect overall network traffic.

Threshold Based Warning

You can set multiple configurable thresholds that track the volume of traffic between pairs of conversations, failed connections per host, top sender and recipient, and specific interfaces from time to time. Special configurable thresholds provide more detailed network traffic tracking. Allows network managers to actively solve problems and resolve performance barriers and eliminate malicious network behavior. Make sure you add Network Traffic Analysis to network management devices with Network Flow Tools.