telnet host_ip port < /dev/null Trying host_ip... Connected to host_ip. Escape character is '^]'. Connection closed by foreign host.
通过检查wireshark,客户端将tcp rst发送到主机端.谁能解释一下究竟发生了什么？ telnet是否需要交互模式？
telnet localhost 23 (23 port of telnet)
或尝试使用netcat
