Setting up Checkpoint Lab on VirtualBox

Hey I am trying to setup the checkpoint lab as done in the CBTnuggets series by keith, but i am using VirtualBox instead of VMware. (i'll add the diagram once i reach home from work).

The diagram: http://imgur.com/a/cxmiu

How do I figure out the 'VMnets' as keith uses them to connect to the VM installations from his own windows PC?

I assign the 10 series IP to the checkpoint installation but then the VB network adapter retains its 192 range IP address, I'm not very familiar with how virtual adapters work and how to do the routing.

I then added the CP VM to GNS3 and used the cloud to add the VB adapter and gave it an addition IP in the 10 range which then worked, but how do I talk to my VB CP installations without using GNS?

Really appreciate any help! Thanks for the notes!

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Ubuntu 19.04 Disco Dingo

Username: osboxes
Password: osboxes.org
VB Guest Additions & VMware Tools: Not Installed
Keyboard Layout: US (Qwerty)
VMware Compatibility: Version 10+

Ubuntu 18.10 Cosmic Cuttlefish

Username: osboxes
Password: osboxes.org
VB Guest Additions & VMware Tools: Installed
Keyboard Layout: US (Qwerty)
VMware Compatibility: Version 10+

Ubuntu 18.04.2 Bionic Beaver

Username: osboxes
Password: osboxes.org
VB Guest Additions & VMware Tools: Not Installed
Keyboard Layout: US (Qwerty)
VMware Compatibility: Version 10+

Ubuntu 16.04.6 Xenial

• VirtualBox (VDI) 32bit DownloadSize: 1.1GB
• VirtualBox (VDI) 64bit DownloadSize: 1.1GB

• VMware (VMDK) 32bit DownloadSize: 1.1GB
• VMware (VMDK) 64bit DownloadSize: 1.1GB

Username: osboxes
Password: osboxes.org
VB Guest Additions & VMware Tools: Not Installed
Keyboard Layout: US (Qwerty)
VMware Compatibility: Version 10+

Ubuntu 14.04.6 Trusty Tahr

• VirtualBox (VDI) 32bit DownloadSize: 892MB
• VirtualBox (VDI) 64bit DownloadSize: 861MB

• VMware (VMDK) 32bit DownloadSize: 851MB
• VMware (VMDK) 64bit DownloadSize: 854MB

Username: osboxes
Password: osboxes.org
VB Guest Additions & VMware Tools: Not Installed
Keyboard Layout: US (Qwerty)
VMware Compatibility: Version 12+

Ubuntu 12.04 Precise Pangolin

• VirtualBox (VDI) 32bit DownloadSize: 590.3MB
• VirtualBox (VDI) 64bit DownloadSize: 578.2MB

• VMware (VMDK) 32bit DownloadSize: 587.8MB
• VMware (VMDK) 64bit DownloadSize: 564.3MB

Username: osboxes
Password: osboxes.org
VB Guest Additions & VMware Tools: Not Installed
Keyboard Layout: US (Qwerty)
VMware Compatibility: Version 12+