Jing Zhou's Log Book

1. Check SSH Service Status [in dev-container]

   • Verified if SSH service was already running in the container
   • Found no SSH daemon running initially

2. Install OpenSSH Server [in dev-container]

   • Used sudo apt install -y openssh-server to install SSH server package
   • System automatically generated SSH host keys during installation

3. Start SSH Service [in dev-container]

   • Executed sudo service ssh start to launch SSH daemon
   • Confirmed SSH was listening on port 22 using netstat -tlnp

4. Configure SSH Security Settings [in dev-container]

   • Modified /etc/ssh/sshd_config to enable root login: PermitRootLogin yes
   • Enabled password authentication: PasswordAuthentication yes

5. Set Root Password [in dev-container]

   • Set root user password to “123456” using echo "root:123456" | sudo chpasswd
   • Cleared and reset password when authentication issues occurred

6. Restart SSH Service [in dev-container]

   • Applied configuration changes with sudo service ssh restart
   • Ensured all settings took effect

7. Regenerate Host Keys [in dev-container]

   • Removed old host keys with sudo rm -f /etc/ssh/ssh_host_*
   • Generated new keys using sudo ssh-keygen -A
   • Resolved host key verification conflicts

8. Test SSH Connectivity [in dev-container]

   • Tested internal SSH connection using sshpass -p "123456" ssh -o StrictHostKeyChecking=no root@localhost
   • Verified successful authentication and command execution
   • Confirmed external SSH connection works through port forwarding

9. Setup Port Forwarding and Provide Connection Instructions [in dev-container + on local machine]

   • Map the current dev container’s port 22 to the host’s port 65345(or other), enabling external applications to connect to the SSH service inside the container
   • Configured port forwarding: localhost:65345(or other) → container:22 in VS Code/Cursor
   • Created ~/.ssh/config file on the host machine and added connection settings
   • Guided user through VS Code Remote SSH extension setup or terminal connection

SSH Configuration (~/.ssh/config):
After completing the above process, you need to manually add this content to your SSH config file, then connect through kirocode

Host dev-container
  HostName localhost
  User root
  Port 65345
  PasswordAuthentication yes
  StrictHostKeyChecking no