R3#confConfiguring from terminal, memory, or network [terminal]?Enter configuration commands, one pe
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R3#conf
Configuring from terminal, memory, or network [terminal]?
Enter configuration commands, one per line. End with CNTL/Z.
R3(config)#line vty 0 4
R3(config-line)#password cisco
R3(config-line)#login
R3(config-line)#^Z
本配置比较简单，后续为大家介绍用户名+密码的方式进行登录
然后本机telnet 127.0.0.1即可完成认证
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