Cacti also allows you to add multiple users and give them access with or without edit permissions, which is perfect for service providers and enterprises with a large NOC team. You can install ntopng on a server with multiple interfaces and use port mirroring or a network tap to feed ntopng with the data packets from the network for analysis.
This level of traffic analysis helps you make informed decisions about capacity planning and QoS design and helps you find bandwidth-hogging users and applications in the network. Icinga was created in by the same group of devs that made Nagios, so they knew their stuff. Since then, the developers have made great strides in terms of expanding both functionality and usability since then. As the Nagios pedigree might imply, its primary focus is monitoring infrastructure and services.
You can also set up customizable notifications and restart services from within the app. Note that Spiceworks is free because most of its revenue comes from the sale of ad displays in its network. This is bolstered by the fact that the free version cannot scale past a single server. Run this on your corporate network at your own risk! The free version also enjoys a 6-month patch and update cycle. One of the most painful features held back from the free version is the lack of alerting capabilities.
Those caveats aside, you get a full auto-discovery of your devices and metrics using SNMP and standard protocols, as usual. It lets users capture traffic at wire speed or read from packet dumps and analyze details at microscopic levels. Wireshark supports almost every protocol, and has functionalities that filter based on packet type, source, destination, etc. It can analyze VoIP calls, plot IO graphs for all traffic from an interface, decrypt many protocols, export the output, and lots more.
Wireshark provides unlimited opportunities to study packets, which makes it a solid go-to for network, system, and security admins. Nmap uses a discovery feature to find hosts in the network that can be used to create a network map. Network admins value it for its ability to gather information from the host about the Operating System, services, or ports that are running or are open, MAC address info, reverse DNS name, and more.
Scalability is the other big reason why network admins love Nmap. But there is a whole other class of tools which are just free-free. They do a particular task very well, and there is no cost with the exception of the odd pop-up ad during installation. For a start, its dashboard is a winning feature, being both extremely well organized and visually dynamic. The view of your data is nice and clear, with widgets you can move around and prioritize based on your preferences.
You can also view summaries, vital statistics, network details, and configuration details, with the option of adding extra tabs, so you can customize your view. Essentially, this dashboard gives you visibility into all your core IT services and your data center. As I briefly mentioned, NPM is scalable, having been designed to function with equal efficiency no matter the size of your network. You can choose to use the out-of-the-box dashboards or customize them to suit your tastes.
The out-of-the-box dashboards available means you can get started with minimal setup. You can also customize alerts and reports. I love the line graphs and pie charts in the dashboard, which make data visualization easier and more dynamic. All metrics are, of course, in real time.
Another thing I like about NPM is the single-page path analysis, which significantly speeds up the process of isolating network slowdowns. With these alerts, you can gain instant insight into how your network is performing and its overall status. Network alert settings can be tweaked to allow receipt of notifications via text, email, and more.
This feature also helps with spotting potential switch, firewall, and load balancer problems. A huge advantage of NPM is you can use it either as a standalone product or in combination with other SolarWinds products, to create a comprehensive network management solution. With NPM, you can monitor both wired and wireless networks, with the ability to drill down into the details of each node—for example, you can choose to view device details, current node status, average response time, and packet loss, among many other metrics.
You can stay on top of utilization and analyze problems in depth to get to the root cause. This includes intelligent Orion Maps, which display physical and logical connections between hardware on an automated basis, helping you make more informed decisions regarding capacity and troubleshooting.
These maps update automatically, adding any new connections in real time. NPM mapping tools are intuitive, letting you customize reports with background images, colors, and symbols. SolarWinds offers a fully functioning day free trial of NPM. With this tool, you can stay on top of everything in your local network, including routers, workstations, switches, printers, and servers. Of these protocols, SNMP is the most commonly used, partly on account of its setup being so simple and how lightweight it is.
It requires a minimal amount of CPU and bandwidth and allows single packets of data to be analyzed via packet sniffing. NetFlow technology is used for Cisco device monitoring. It tracks the rates of packet transfers in real time, keeping you informed on a continuous and immediate basis. This lets you drill into the metrics, down to the protocol level, via the sniffer functionality.
Alerts are delivered directly to you when something goes amiss—whether it be a case of limited availability, problems with the connection, an overworked server, or a range of other problems.
If you want to monitor a distributed network, you can do this from one centralized location, while staying on top of distinct LANs via remote probes. These remote probes collect monitoring data and can be installed either in the same network as your core server or in other networks provided they have a constant connection to the internet , or both.
PRTG also gives you a detailed view of your virtual private network. WANs, meanwhile, can cross continents and are truly global in some cases. At the same time, they often host extremely sensitive data and are responsible for running key programs. I like the PRTG dashboard, which offers a lot of visual graphic options. This includes pie charts, line graphs, dials, and much more.
You can also query specific nodes from within your dashboard, obtaining immediate reports on the status of the node, based on real-time data. There are pages within the dashboard dedicated to individual devices, each with its own array of graphical representations that are super easy to interpret. A big benefit of PRTG is you can access it from any device on the network. This includes tablets, iPads, and smartphones. The auto-discovery feature will identify all your devices and create a topology map of your network—I value this feature because it gives you a dynamic and instant view of your whole network.
As a tool to seamlessly unify the monitoring of bandwidth, servers, applications, network devices, virtual environments, remote systems, and IoT, PRTG is a versatile and well-designed program. Alternatively, you can try the free version, which allows up to sensors. For a free LAN monitor, this product is very generous. Each of its analysis utilities brings something distinct to the table, and they come together to form a comprehensive and versatile monitoring solution despite the nonexistent price tag.
Flow Tool Bundle distributes flow data to numerous destinations, tests configurations by simulating network flow data, and configures NetFlow v5 on Cisco devices. NetFlow Replicator is responsible for the distribution of flow data, including the replication of IPv4 and IPv6, to multiple locations. This helps in conducting an analysis of traffic or security. With the Replicator tool, you can configure random samplings of flow data packets, thereby reducing load on the system being monitored and on the collector.
The NetFlow Replicator console is simple and easy to use, featuring spaces to input the IP address or hostname of the listener, the relevant port, the IP address or hostname of the destinations of which there can be multiple , the ports for each, and the sampling rate of the packets e. You can stop the console at any time. I really appreciate how simple this is. SolarWinds NetFlow Generator simulates network flow data, allowing you to test and validate all your configurations.
This utility is useful, especially when testing more complex network elements, like firewall rules, load balancers, and alert trigger conditions. The Generator console, as with NetFlow Replicator, is easy to use.
You can then add endpoints. The Configurator lets you establish a router, from which you can send NetFlow records to the collector. This utility first asks you to input device information and credentials, including IP address or hostname; choose the SNMP version v1, v2, or v3 ; and establish the community string i. Bandwidth Monitoring is important in every network and should be a top priority for all Network engineers and administrators in order to know exactly what is going on in your network at all times.
In many instances, utilizing tools to keep tabs on your network allows for oversight into what is going on in your LAN and potentially catching high-traffic processes, programs and more importantly, users who are abusing precious network resources.
The cause can be one of many things, but if you've exhausted all possible end-user remedies such as diagnosing issues on that individual's actual machine and drilling down into their processes and programs that are running and the problem still has not been fixed, then its time to take a step back and see if the network has a bottleneck and bandwidth consumption is really the culprit of the issue.
As your Local Networks become more congested with the advent of BYOD Bring Your Own Device cultures and policies, we're seeing higher consumption on every end of our LAN and are taking further action into seeing what's really going on in our network and who are the top talkers and abusers.
Surprisingly enough, many times Network engineers can spot not only programs that are consuming way too much bandwidth, but users who are taking advantage of lax content filtering policies and using free time in the office to watch streaming videos, browse Youtube, Netflix, Facebook, streaming mp3 websites and much more. On top of end-users, network admins can also trace odd outbound IP traffic to potentially catch botnets, viruses, and potential security breaches that made their way into the network already.
We reviewed the market for network traffic monitoring software and analyzed the tools based on the following criteria:. This service offers network flow monitoring, application identification, wireless network monitoring, performance analysis, bottleneck identification, problem alerting, and traffic shaping.
The analyzer sets itself up by searching the network as soon as it is installed on a connected server. By examining the port number in the headers of traveling packets, the NetFlow Traffic Analyzer can segment throughput data by protocol and, therefore, application.
This is a useful insight into network activity because it lets you see the growth in traffic be application. With this categorization, you can see whether there is a growth trend in the activity on the network that is created by a specific application. It is also interesting to look at what times of the day each application is most active. With the knowledge gained from the NetFlow Traffic Analyzer, you can start taking steps to ensure that trend growth in traffic is accounted for and implement changes in hardware layout.
Another approach would be to move tasks that are not time-sensitive to out-of-hours processing. You could also implement queueing at switches to ensure that priority, interactive traffic always gets through unhindered. SolarWinds NetFlow Traffic Analyzer is our top pick for a bandwidth monitoring tool because it can communicate with network devices that are provided by many manufacturers and extract categorized traffic statistics. The data stored by the tool can be used within the dashboard for historic analysis, identifying traffic growth trends and the peaks and troughs in different types of traffic.
With this knowledge, you can re-plan your physical infrastructure and introduce traffic shaping to reduce the risk of overloading. Download: Start day Free Trial. ManageEngine has a great little Bandwidth Monitor add-on tool that can be added to their software package to further monitor traffic on your network and monitor bandwidth usage within your perimeter.
The Free version of this tool give you the ability to monitor any 2 Interfaces from a Device, which is bit limited, but will give you the data your are looking for from your router ports. The add-on gives you the ability to fetch data uses SNMP and see usage details on both Device and Interfaces, instead of only off of Interfaces.
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