Scanning Networks

24 March 2023 5 minutes Author: Endpool

Network scanning – what is it for?

This article covers the topic of network scanning software. Network scanning aims to identify network computers and identify network services running on them (open TCP or UDP ports). We will look at the main software used by “Ethical Hackers”. You will learn about the NMAP (Zenmap) program, which was specially designed for fast scanning of large networks as well as for individual networks. Check out Hping2/Hping3. It is one of the security auditing and testing tools for firewalls and networks and has been used to use idle scanning technology. The article mentions a new information gathering and correlation engine created for members of the security research and testing communities, Unicornscan. Metasploit is an open source project that provides tools for performing penetration tests and extensive security auditing.

You will learn about NetScanTools Pro, a tool that allows you to troubleshoot, monitor, discover devices on your network. You can also scan the Internet using programs for mobile devices. IP Scanner for iOS, Android – scans your local network to determine the identity of all its active computers and Internet devices. Fing is a mobile app for Android and iOS that scans and provides complete network information such as IP addresses, MAC addresses, device vendor, and ISP location. Network Scanner is a mobile application for Android that allows attackers to identify an active host in a range of possible addresses.

This section covers network scanning programs

Network scanning aims to identify networked computers and identify network services running on them (open TCP or UDP ports). The first task is to send an ICMP Echo message using the ping program, sequentially searching for host addresses on the network. It is worth trying to send an Echo message to a broadcast address – all computers will respond to it. We will look at the main software used by “Ethical Hackers”.

NMAP (Zenmap)

It is an open source utility for network investigation and security testing. It was designed for fast scanning of large networks, although it does a great job on individual targets.

Screenshots of programs

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Hping2/Hping3

It is one of the security auditing and testing tools for firewalls and networks and was used for idle scanning technology (also invented by the author of hping). It supports TCP, UDP, ICMP and RAW-IP protocols, has a traceroute mode, the ability to send files between a closed channel and many other functions.
(Link)

Unicornscan

Unicornscan is a new information gathering and correlation engine built for members of the security research and testing communities. It was designed to provide a scalable, accurate, flexible and efficient engine. It is released for community use under the terms of the GPL license. Unicornscan is an attempt to use a distributed TCP/IP stack for the user. It is designed to provide an excellent interface for the researcher to inject a stimulus into a TCP/IP enabled device or network and measure the response.

(Link)

Metasploit

Metasploit is an open source project that provides  tools to perform penetration testing and extensive security auditing. It provides information about security vulnerabilities and helps in penetration testing and IDS signature development. This makes it easier for attackers, exploit writers, and payload recorders. The main advantage of the framework is a modular approach, that is, it allows you to combine any exploit with any payload. It enables you to automate the discovery and exploitation process and provides the tools you need to perform the manual testing phase of a penetration test. You can use Metasploit Pro to find open ports and services, exploit vulnerabilities, further plug into your network, gather evidence, and generate a test report.

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NetScanTools Pro

NetScanTools Pro is a research tool that allows you to troubleshoot, monitor, discover devices on your network. Using this tool, you can easily collect information about your local LAN as well as Internet users, IP addresses, ports, and more. Attackers can find vulnerabilities and open ports on the target system. This helps attackers to enumerate IPv4/IPv6 addresses, hostnames, domain names, email addresses and URLs automatically or manually (using manual tools). NetScanTools Pro combines many network tools and utilities classified by functions, such as active, passive, DNS, and local computer.

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Applications for a mobile device
IP Scanner

IP Scanner for iOS, Android – Scans your local network to determine the identity of all its active computers and Internet devices. This allows attackers to perform network scanning activities alongside ping and port scanning.

(Link)

Fing

It is a mobile app for Android and iOS that scans and provides complete network information such as IP address, MAC address, device vendor and ISP location. This allows attackers to discover all devices connected to a Wi-Fi network, their IP and MAC addresses, and the name of the device manufacturer. It also allows attackers to perform network pings and traces through certain ports such as SSH, FTP, NetBIOS, etc.

(Link)

Network Scanner

This is a mobile application for Android that allows attackers to identify an active host from a range of possible addresses on the network. It also displays the IP addresses, MAC addresses, hostnames, and manufacturer information of all available devices on the network. This tool also allows attackers to scan ports with specific port numbers.
(Link)

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