首先改成中科大的源
echo "deb http://mirrors.ustc.edu.cn/debian stable main contrib non-free
deb http://mirrors.ustc.edu.cn/debian stable-updates main contrib non-free" > /etc/apt/sources.list
- netstat
apt install net-tools - ping
apt install iputils-ping - telnet
apt install telnet
telnet/stable 0.17-41.2 amd64
basic telnet client