Network monitoring is a tool for discovering and sending alerts about problems affecting the availability or functionality of online services. Administrators typically monitor network service availability, network interface capabilities, critical system hardware status, CPU, memory, or other statistics related to devices and device servers.
What is network monitoring?
In other words, the administrator uses network monitoring tools to ensure that critical network systems are available and functioning properly.
Good monitoring and evaluation of the network are essential.
Understand basic network statistics: help managers monitor and respond to abnormal behavior.
Dominant networks - Preventing incorrect configurations, IT shadows and unwanted or interrupted security threats by internal or external attackers.
Identify critical issues: it may slow down the network or cause an error before the problem occurs.
If a problem is found, identify the cause and help resolve it.
What does network monitoring do?
The network monitoring tool covers some or all of the following network elements:
Network router devices, switches, devices, gateways, proxies, etc.
Connections and connections between network elements, including network interfaces
Mission Critical Server - Web server monitoring, Email server, Application server, FTP server, Storage system
External service provider: includes Web hosting, cloud services, SaaS applications, messaging services
Network monitoring of network servers or other devices typically evaluates availability, CPU and memory usage, disk usage, and configuration.
Network Monitor works with protocols such as HTTP, HTTPS, SNMP, FTP, SMTP, POP3, IMAP, DNS, SSH, TELNET, SSL, TCP, ICMP, SIP, UDP, multimedia streaming. Network monitoring solutions enable passive monitoring such as listening to ports and communicating traffic. Some solutions include active monitoring such as sending ping or TCP requests to check the response of a server or network service.
Dimensions and dimensions used in network monitoring tools
Network monitoring tools measure the following aspects of network services or devices:
Availability: is the service or device ready and responsive to requests?
Network response time: how quickly can each request be processed?
Network Path Analysis - The network path where the request is sent, where the client and server jump and where the path is right.
Network traffic monitoring techniques and tools
The main purpose of network monitoring is pinging. Pinging will verify that the computer is working and that the network connection is complete. Pinging works by sending an Internet Control Control Message Protocol (ICMP) request to a network and measuring the round-trip time (RTT) of a message sent from a source host to a destination and return the computer.
Another way to monitor the network is with the Simple Network Management Protocol (SNMP). SNMP provides network devices with a reliable way to share information with each other. Create a data tree with a management database (MIB) that connects different types of devices or device components. Each device or component has an object identifier (OID) which allows network tools to retrieve the object and obtain operational information.
SNMP and other control methods are influenced by a variety of free, open-source and commercial network tools. These tools allow you to monitor traffic, view status and visualization diagrams and states, define network anomalies, receive alerts, and diagnose complex network problems.