SSH

SSH-----------Secure Shell

 

配置SSH步骤：

1、  双方配置主机名与域名，主机名与域可以不相同

R1(config)#hostname r1

r1(config)#ip domain-name cisco.com

 

R2(config)#hostname r2

r2(config)#ip domain-name cisco.cn

 

2、  双方生成rsa密钥，密钥必须相同

 

r1(config)#crypto key generate rsa

The name for the keys will be: r1.cisco.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]: 1024

% Generating 1024 bit RSA keys, keys will be non-exportable...[OK]

 

r1(config)#

 

r2(config)#crypto key generate rsa

The name for the keys will be: r2.cisco.cn

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]: 1024

% Generating 1024 bit RSA keys, keys will be non-exportable...[OK]

 

3、  配置用户名和密码

r1(config)#username cisco password cisco

4、  在VTY下开启SSH远程登录

 

r1(config)#line vty 0 4

r1(config-line)#login local

r1(config-line)#transport input ssh telnet

r1(config-line)#exit