Install GNS3 in windows

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GNS3 is a graphical network simulator that allows simulation of complex networks.

To allow complete simulations, GNS3 is strongly linked with :

  • Dynamips, the core program that allows Cisco IOS emulation.
  • Dynagen, a text-based front-end for Dynamips.
  • Pemu, a Cisco PIX firewall emulator based on Qemu.

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Install OpenBSD

This is my first tutorial i hope it informative for you
this  tutorial will take you step by step in how to install openbsd.
openbsd is OS that recommended from all security Hacker

tutorial