思科路由器登陆模式介绍

Console端口线路配置：

Router(config)#hostname R1
R1(config)#int f0/0
R1(config-if)#ip add 192.168.1.254 255.255.255.0
R1(config-if)#no shut

%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up

%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up

R1(config)#line con  0
R1(config-line)#pass
R1(config-line)#password 12346
R1(config-line)#login
R1(config-line)#logg syn //光标同步
R1(config-line)#exec-timeout 0 0 //永远不超时
R1(config-line)#exit

虚拟终端线路配置：

R1(config)#line vty 0 4
R1(config-line)#password cisco
R1(config-line)#login
R1(config-line)#exit
R1(config)#username admin password cisco

R1#wri
Building configuration...
[OK]
R1#reload

使用SSL协议登录：

R1(config)#ip domain-name abc.com  //配置域名
R1(config)#crypto key generate rsa //开启SSH功能
The name for the keys will be: R1.abc.com
Choose the size of the key modulus in the range of 360 to 2048 for your
  General Purpose Keys. Choosing a key modulus greater than 512 may take
  a few minutes.

How many bits in the modulus [512]:  //配置密钥长度
% Generating 512 bit RSA keys, keys will be non-exportable...[OK]

R1(config)#user
*?? 1 0:7:39.609:  RSA key size needs to be at least 768 bits for ssh version 2
*?? 1 0:7:39.609:  %SSH-5-ENABLED: SSH 1.5 has been enabled
R1(config)#username admin secret cisco  //创建账户
ERROR: Can not have both a user password and a user secret.
Please choose one or the other.
R1(config)#line vty 0 4
R1(config-line)#transport input all
R1(config-line)#login

登录如图所示：