一、实验拓扑：（拓扑描述-ENSP与真实机结合实现）
二、实验配置
（1）AR1配置-SSH-server
配置AR1接口G0/0/0的IP 地址为10.0.0.2/24。
[AR1]interface g0/0/0
[AR1]ip add 10.0.0.2 24
测试 真实机 与 AR1的连通性：
（2）在AR1上启动SSH服务：[AR1]stelnet server enable
（3）在AR1上配置SSH登录虚拟接口的认证模式 和 准入 协议：
user-interface vty 0 4
authentication-mode aaa
protocol inbound all
（4）在AR1上建立AAA的登录用户：
aaa
local-user mzh password cipher mzh123
local-user mzh privilege level 3
local-user mzh service-type telnet terminal ssh
（5）在AR1上配置SSH加密 和 认证的相关参数：
1、配置SSH登录的密钥对：
[AR1]rsa local-key-pair create
The key name will be: Host
% RSA keys defined for Host already exist.
Confirm to replace them? (y/n)[n]:y
The range of public key size is (512 ~ 2048).
NOTES: If the key modulus is greater than 512,
It will take a few minutes.
Input the bits in the modulus[default = 512]:
Generating keys...
.++++++++++++
.....++++++++++++
.....++++++++
........................++++++++
[AR1]
[AR1]disp rsa local-key-pair public
=====================================================
Time of Key pair created: 2020-05-30 21:35:16-08:00
Key name: Host
Key type: RSA encryption Key
=====================================================
Key code:
3047
0240
CE843476 E0DA3F37 FF2193BD B960C7B8 6265A73D
06F35468 CC953399 3E299D5A F940B1F5 E35D1062
303B0297 124B82F1 125150EC B5903D8A FD91BFB7
73D84935
0203
010001
=====================================================
Time of Key pair created: 2020-05-30 21:35:20-08:00
Key name: Server
Key type: RSA encryption Key
=====================================================
Key code:
3067
0260
98549791 2F7B9401 881CD43A 25070FA5 DA79F01E
34AA5773 1C6235A9 ECDF6FC4 C0A2F544 E81093B2
9942B372 8A399A0C 26E742F9 FAF0D5FE 69723A4A
4BBB96B4 826A779A 7083EADF 0F530394 0C607BBC
BD4B0D0E A1E2CA9A 239B3F8D 756BC171
0203
010001
[AR1]
[AR1]ssh user mzh authentication-type password
Authentication type setted, and will be in effect next time
[AR1]disp ssh user-information mzh
-------------------------------------------------------------------------------
Username Auth-type User-public-key-name
-------------------------------------------------------------------------------
mzh password null
-------------------------------------------------------------------------------
[AR1]
[AR1]disp ssh server status
SSH version :1.99
SSH connection timeout :60 seconds
SSH server key generating interval :0 hours
SSH Authentication retries :3 times
SFTP Server :Disable
Stelnet server :Enable
[AR1]
三、测试 主机 与 SSH-server 的 连通性：真实机 使用Xshell 实现：
<AR1>disp ssh server session
-------------------------------------------------------------------
Conn Ver Encry State Auth-type Username
-------------------------------------------------------------------
VTY 0 2.0 AES run password mzh
-------------------------------------------------------------------
<AR1>