Network Penetration Testing determines vulnerabilities in the network posture by discovering Open ports, Troubleshooting live systems, services and grabbing system banners.
The pen-testing helps administrator to close unused ports, additional services, Hide or Customize banners, Troubleshooting services and to calibrate firewall rules.You should test in all ways to guarantee there is no security loophole.
Let’s see how we conduct a step by step Network penetration testing by using some famous network scanners.
Footprinting is the first and important phase were one gather information about their target system.
DNS footprinting helps to enumerate DNS records like (A, MX, NS, SRV, PTR, SOA, CNAME) resolving to the target domain.
We can detect live hosts, accessible hosts in the target network by using network scanning tools such as Advanced IP scanner, NMAP, HPING3, NESSUS.
To obtain Whois information and name server of a webiste
Network Diagonastic tool that displays route path and transit delay in packets
Perform port scanning using tools such as Nmap, Hping3, Netscan tools, Network monitor. These tools help us to probe a server or host on the target network for open ports.
Open ports are the gateway for attackers to enter in and to install malicious backdoor applications.
Perform banner Grabbing/OS fingerprinting such as Telnet, IDServe, NMAP determines the operating system of the target host and the operating system.
Once you know the version and operating system of the target, we need to find the vulnerabilities and exploit.Try to gain control over the system.
IDserve another good tool for Banner Grabbing.
Scan the network using Vulnerabilities using GIFLanguard, Nessus, Ratina CS, SAINT.
These tools help us in finding vulnerabilities with the target system and operating systems.With this steps, you can find loopholes in the target network system.
It acts as a security consultant and offers patch Management, Vulnerability assessment, and network auditing services.
Nessus a vulnerability scanner tool that searches bug in the software and finds a specific way to violate the security of a software product.
Draw a network diagram about the organization that helps you to understand logical connection path to the target host in the network.
The network diagram can be drawn by LANmanager, LANstate, Friendly pinger, Network view.
Proxies act as an intermediary between two networking devices. A proxy can protect the local network from outside access.
With proxy servers, we can anonymize web browsing and filter unwanted contents such as ads and many other.
Proxies such as Proxifier, SSL Proxy, Proxy Finder..etc, to hide yourself from being caught.
The last and the very important step is to document all the Findings from Penetration testing.
This document will help you in finding potential vulnerabilities in your network. Once you determine the Vulnerabilities you can plan counteractions accordingly.
You can download rules and scope Worksheet here – Rules and Scope sheet
Thus, penetration testing helps in assessing your network before it gets into real trouble that may cause severe loss in terms of value and finance.
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Great article you have nailed it, it is very helpful for me.Thank you…
Thank you for your kind words.Your appreciation means a lot to me.
Good Article. By any chance Can I have the Video Tutorial for this, do you have any Youtube Channel?
Thanks for your Feedback. At this time we were not having any youtube channel.
We are in the process of it and let you know once it was launched.
Please support and follow us.
Perfect Representation, Special thanks for adding DNS records with it…
Thank you. I’m glad to hear this.
You can also do vulnerability scanning with nmap…you don’t really need to use other vulnerability scanners as they generate noise in the network and this can result in you IPO being blocked by a firewall or IPS…nmap contains scripts that can be run stealthily in a network without being detected most times.
Thanks for your suggestion, we will add Nmap into the List.
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