Udemy - Getting Started in Port Scanning Using Nmap and Kali Linu...

  • Category Other
  • Type Tutorials
  • Language English
  • Total size 908.0 MB
  • Uploaded By tutsnode
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  • Date uploaded 4 days ago
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Infohash : F6C682A3ECE9584CBA53B6019A4C4434E30494E2


How Secure Is Your System?

A default install of CentOS 8 may seem like a good idea but how exposed does that leave you, after all it is Enterprise Level Linux.

In this course we work with nmap and Wireshark on Kali Linux from Offensive Security. Scanning your network with the tools and systems used by hackers helps you understand the cyber security risk to your systems. First, we identify one simple weakness with port 9090 open by default, in the firewall in readiness for Cockpit the web administration console. Cockpit is disabled by default leaving the system with one open port 22 and one closed port 9090 just what is needed for an effective Operating System detection scan. Simply closing 9090 in the firewall reduces this threat.

Next we learn to audit SSH security to detect systems that allow password based authentication, again a default setting we need to secure. The nmap Scripting Engine or NSE is perfect to delve inside of the services running on your system to expose weaknesses. Throughout the course, we use Wireshark to analyse the network activity helping you to understand the different modes of nmap.

Finally we secure the threats using Ansible configuration management; ensuring that the fixes are documented and repeatable.

The main topics covered in this course include:

Nmap as root and non-root accounts
The detection phases used by nmap
Host discovery using nmap
Creating lists of online hosts
Using different host discovery techniques in nmap
Using different port selection mechanisms in nmap
Using nmap and awk to list SSH Servers on the network
Capturing and filtering packets with Wireshark
Using NSE scripts to print SSH Host-keys and authentication methods
Using Ansible to secure your host configuration

Who this course is for:

Linux administrators looking to secure their systems
Security practitioners needing to learn more about network analysis


You should have a good understanding of Linux from the command line
You should have some knowledge on networking

Last Updated 5/2020


Getting Started in Port Scanning Using Nmap and Kali Linux
  • Getting Started in Port Scanning Using Nmap and Kali Linux.zip (908.0 MB)
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