packet sniffer
A packet capture (or sniffer) program sees packets coming into and out of the NIC (network interface card). It saves it for later analysis and use. These capture programs can be used to analyze traffic, look for problems, or be used for looking at data coming across the network.
it verifies that all information transmitted from the computer is correctly received by the recipient.
Network monitoring is the action of examining what's going across a network (what data is being transmitted). You monitor a network mainly for troubleshooting (network and upper layers, e.g. an application) and for carrying out flow analysis studies (e.g. to help find a bottleneck or correctly size future equipment.
To monitor network devices, you can use spiceworks or 10-Strike Network Monitor. To monitor internet activities, I would recommend WFilter Enterprise.
A network speed monitor is used to monitor network traffic performance and how efficient the internet connection is when compared with that provided by the Internet Service Provider(ISP).
The purpose of Windows Network Monitor is quite obvious: it allows one to monitor all the network activity that goes into the computer and out of it, which can be useful in tracking down viruses.
Some of the most popular programs which are used to monitor traffic within a business network include PRTG, Network Monitor, Network Eagle and Nagios.
to monitor traffic or computers on the natwork and to monitor data being sent on the network
The difference: With PSTN, the voice is transmitted through the network of cables. While with VoIP is transmitted through the internet. This is the main difference between the two communication systems.
There is Frame Flow, which will monitor network infrastructure and IT systems all the time. Net Gong is also an option. It will monitor connectivity and device availability of the network.
The monitor station
Ethernet.