要使用Linux命令查看VPN连接的数量和用户信息，可以按照以下步骤操作

步骤 1：安装nc命令

确保nc命令已经安装,如果尚未安装，可以使用以下命令安装：

sudo apt-get install nc

步骤 2：查看所有端对端+（HEAP）连接

使用以下命令查看所有端对端+的连接：

nc -n -u 12345 6789

步骤 3：筛选端对端+连接并显示用户信息

使用以下命令筛选端对端+的连接，并显示每个用户的连接信息：

nc -n -u 12345 6789 -g 88 888

步骤 4：查看端对端连接数量

使用以下命令筛选端对端连接,并显示每个用户的连接数量：

nc -n -u 12345 6789 -g 8 443

步骤 5：查看端对端+连接数量

使用以下命令筛选端对端+的连接数量：

nc -n -u 12345 6789 -g 88 888 -c

使用nc的高级选项

• 连接状态：使用 -c 选项可以查看连接的“Connected”和“Up”提示，显示连接状态。
• 停止连接：使用 -k 选项可以使用nc命令暂停连接，等待一定时间后恢复连接。

示例输出

假设运行命令后,nc显示以下信息：

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