Ubuntu guest and Windows host unable to communicate

Discussions related to using VirtualBox on Windows hosts.

Ubuntu guest and Windows host unable to communicate

Postby aenagy » 5. Mar 2021, 03:42

Host: Windows 10 Enterprise 1909
Guest: Ubuntu Desktop 20.04
VirtualBox: 6.1.6 r 140961


  1. The Ubuntu guest is able to communicate to the Internet via default NAT network.
  2. The Ubuntu gest has an IP of from 'ip address'. (I haven't figured-out the guest-host clipboard thing yet to be able to include the output from 'ip address'.)
  3. The Windows host has an IP of
  4. Ethernet adapter VirtualBox Host-Only Network:

    Connection-specific DNS Suffix . :
    IPv4 Address. . . . . . . . . . . :
    Subnet Mask . . . . . . . . . . . :
    Default Gateway . . . . . . . . . :
  5. The Ubuntu guest can ping, but cannot ping
  6. The Windows host can ping, but not ping
  7. Using this link (stoopid rule about not being able to post urls) I can confirm that ufw does allow ICMP.

Because this is a a heavily restricted environment I don't have local admin access (requesting and getting it requires VP approval, even temporarily). I want to eliminate the obvious or silly things before getting the help desk involved.

What are the obvious or silly things I should be looking at?
Posts: 1
Joined: 5. Mar 2021, 03:07

Re: Ubuntu guest and Windows host unable to communicate

Postby BillG » 5. Mar 2021, 06:42

That sort of problem is usually a client firewall problem. Do you have enough privilege in Windows to disable or modify the Windows firewall on the host?
Posts: 4746
Joined: 19. Sep 2009, 04:44
Location: Sydney, Australia
Primary OS: MS Windows 10
VBox Version: PUEL
Guest OSses: Windows 7,8,Server

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