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Building a DMZ lab for pentesting in GNS3 and VMWare Workstation9 (Part II: Basic Layout)

July 18, 2014

cyber and space

Hello again, fellows.

Today we’re using the preconfigured (see Part I) GNS3 to build our basic lab. Imagine the following scenario:

Your pentesting company got contracted by a small company to do a white/grey box pentest. This means you know everything about the present IT infrastructure and got all info on software patchlevels and hardware used. And to safely mitigate possible downtimes or other unforseen consequences of a full-blown pentest on the production network, network simulation comes in handy.

Also if your pentesting company is contracted to do a black box pentest a virtual network that is built on findings from the information gathering process can be used as a test environment before actually conducting the test on the real systems.

As for our pentest we choose a mid-sized software company called Noob.net with the following network properties:

  • Dual firewall DMZ with port forwarding
  • Webserver & Services (Email, DNS, etc.)…

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