Connection failed when using Xshell remote Ubuntu under Windows

Phenomenon Description: Ubuntu can ping the host, the host can also ping the virtual machine. But the connection failed when using Xshell remote Ubuntu under Windows.

Solution: Steps:

1. Check the firewall status:sudo ufw disable

2, active, then turn off the firewall (even if not active, also re-shut the firewall):sudo ufw disable

3. Open 22 port:sudo ufw allow

4. Installing the SSH service: sudo apt-get install openssh-server

5. View the installation result: PS- e |grep ssh

6. Use Xshell connection again under Windows to succeed

Self-operated, absolutely feasible solution. Peer communication add my friends, together on the Linux road along the line.

Connection failed when using Xshell remote Ubuntu under Windows