Ensure that your host system is on the same Layer 2 network as the UDM-Pro. With the UDM, you have to make your permanent configuration changes through the web UI. From the command line shell you can run specific commands to display log messages that contain information on the current VPN settings. SSH stands for Secure Shell and is a way to access the Command Line Interface (CLI) on the UDM/USG.
UniFi Dream Machine 默认打开了 SSH 功能，使用 root 用户和管理员密码就能登录： $ ssh Welcome to UbiOS By logging in, accessing, or using the Ubiquiti product, you acknowledge that you have read and understood the Ubiquiti License Agreement and agree to be bound by its terms.
