Oracle VM VirtualBox NAT network Ping failed

Preface

• To change the network IP The same address , So use the NAT The Internet , but Oracle VM VirtualBox Of NAT It seems to be with VMware Of NAT The pattern is different , Can't connect , also ping no . As shown in the figure below .
  
  

Solution

Set up port forwarding

• The solution is to set up Port forwarding . Let's start setting .
• stay Oracle VM VirtualBox Click on the main interface Set up
  
• choice The Internet , Click on senior .
  
• Get into Port forwarding , Set port forwarding rules .
  

This configuration represents native 222 Mapping ports to virtual machines 22 port . The same is true for mapping other ports .

test

• I use 127.0.0.1 222 Start connecting Linux virtual machine . The commands are as follows .

ssh [email protected]  -p 222

• Successful connection , As shown in the figure below .
  

Other questions （ Updated on 2022 year 5 month 16 Japan 17:50:17）

Slow login after port forwarding

• Login is simply turtle speed
  

• The solution is not dns analysis .

vim /etc/ssh/sshd_config

Uncommented UseDNS And modified to no

• restart ssh service

systemctl restart sshd.service

• Effect login is fast , As shown in the figure below .
  

Reference resources

• http://ask.apelearn.com/question/9986