Table of Contents
Network monitoring is the process of observing and analyzing the performance and availability of a computer network. Network monitoring can help identify and troubleshoot network problems, optimize network performance, and ensure network security. Network monitoring can be done using various tools and techniques, such as:
Ping
A ping is a simple test that sends a packet of data to a network device and waits for a response. Ping can measure the latency and packet loss of a network connection. For example, ping can be used to check if a website is online or not, or to test the speed of a wireless network.
As you can see, with “ping 8.8.8.8.8” we checked that this ip address is active (the server is serving). We learned that the site server was active with more “ping www.configzone.com” and we learned the ip address of the server.
Traceroute
A traceroute is a tool that traces the path of a packet from one network device to another, showing the hops and delays along the way. Traceroute can help identify the location and cause of network bottleneecs or failures. For example, traceroute can be used to diagnose why an email is taking too long to reach its destination, or to find out which routers are involved in a network connection.
If we need to use windosta we should use tracert. For example:
Now how do we tracert faster? If you start “tracert 8.8.8.8.8.8” it can take a very long time. This is due to the algorithm running in the background. But if you use “tracert -w 1 -d 8.8.8.8.8” you will get much faster results.
Netwok Monitor SNMP
SNMP stands for Simple Network Management Protocol, a standard protocol for collecting and organizing information about network devices. SNMP can monitor various network parameters, such as bandwidth usage, CPU load, memory utilization, disk space, etc. For example, SNMP can be used to monitor the health and performance of servers, routers, switches, printers, etc.
NetFlow
NetFlow is a protocol that records and analyzes the traffic flows on a network. NetFlow can provide detailed information about the source, destination, volume, and type of network traffic. For example, NetFlow can be used to detect network anomalies, such as unauthorized access, denial-of-service attacks, malware infections, etc.
Nmap
Nmap is a tool that scans a network for open ports, services, operating systems, vulnerabilities, and other information. Nmap can help discover network devices and assess their security posture. For example, Nmap can be used to find out what devices are connected to a network, what services they are running, what operating systems they are using, what vulnerabilities they have, etc.
Nmap is supported in many operating systems. Windows, linux max. Usually nmap is used with terminal in linux environment. Also nmap is a very comprehensive tool and many posts can be written about it. It would be healthier to prepare and explain a lab about it in linux environment. Here is a simple screenshot.
Target: IP address or server IP address to scan.
command: Line with many parameters. As I said, this is a topic for another article.
Profile: There are some ready-made profiles in this section. The software that will select them scans with command sets. You do not need to write the commands. In this profile, the first 1000 ports are scanned.
Network monitoring is essential for maintaining a reliable and efficient network infrastructure. Network monitoring can help detect and resolve network issues before they affect users or business operations. Network monitoring can also help optimize network resources and plan for future network growth or changes.
