Telnet

下载

centos

telnet-0.17-48.el6.x86_64.rpm

telnet-server-0.17-48.el6.x86_64.rpm

安装

rpm -ivh telnet-0.17-48.el6.x86_64.rpm 
rpm -ivh telnet-server-0.17-48.el6.x86_64.rpm

telnet 192.168.0.1 3306

netcat

docker run -it --rm  gophernet/netcat 192.168.0.1 3306