I have an Ubuntu 18 Guest on Virtual Box 6 running over windows 10. I need to ssh into the ubuntu machine. I've set a nat rule from my host 3022 port to port 22 on the guest. Configuration as follows: enter image description here

But whenever I try to ssh into the machine I'm getting the following error:

ssh -l vfbsilva localhost  -p 3022
ssh_exchange_identification: read: Connection aborted

I`m using the https://cmder.net/ terminal emulator, might this be the problem?

  • Just to check, adapter is of NAT type ? – Bharat May 7 at 17:26


  • Host IP -
  • Guest IP -
  • NAT interface (#1) - enp0s3
  • Host-only interface (#2) - enp0s8
  • OpenSSH in both host and guest

Change the IP addresses as your setup.


  • Enable second network adapter as host only interface:
VBoxManage modifyvm "Ubuntu" --nic2 hostonly 
VBoxManage modifyvm "Ubuntu" --hostonlyadapter1 "VirtualBox Host-Only Network" 
  • Add static private IPv4 address in host only interface:
netsh interface ip set address "VirtualBox Host-Only Network" static 
  • Add static private IPv4 address in guest:

Add the IP address in Network Manager or Add these lines in /etc/network/interfaces file.

# NAT network interface
auto enp0s3
iface enp0s3 inet dhcp

# Host-Only network interface
auto enp0s8
iface enp0s8 inet static

Restart network interfaces with sudo ifdown -a; sudo ifup -a command.

  • Allow the IP addresses in firewall (if any). Try to ping each other.

  • Generate ssh key pair and copy the public one:

ssh-keygen -t rsa
ssh-copy-id user@
  • Add port forwarding in NAT interface:
VBoxManage modifyvm "Ubuntu" --natpf1 "guestssh,tcp,,3022,,22"
  • Restart VM and SSH with ssh -p 3022 user@localhost.

Further reading

VirtualBox Manual: VboxManage

  • By some reason I cant figure out it did not work. – vfbsilva May 6 at 19:11
  • @vfbsilva Does host and guest ping each other? – Biswapriyo May 6 at 19:47
  • ssh_exchange_identification: read: Connection aborted. And they dont ping each other. I might have messed something up. How do I remove all created netowrks? – vfbsilva May 7 at 5:28
  • @vfbsilva It is not possible to discuss this in short Q&A session. You've to consult the VBox manual. – Biswapriyo May 7 at 5:38

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