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Configuring Secure Shell on Cisco IOS Routers

王朝other·作者佚名  2008-05-31
窄屏简体版  字體: |||超大  

Hardware and Software Versions

The information in this document is based on the software version below.

Cisco IOS 3600 Software (C3640-IK9S-M), Version 12.2(2)T1

SSH was introdUCed into IOS platforms/images as shown below.

SSH Version 1.0 (SSHv1) server was introduced in some IOS platforms/images starting in 12.0.5.S.

SSH client was introduced in some IOS platforms/images starting in 12.1.3.T.

SSH terminal-line Access (also known as reverse-telnet) was introduced in some IOS platforms/images starting in 12.2.2.T.

[[The No.1 Picture.]]

Testing Authentication Without SSH:

!--- aaa new-model causes the local username/passWord on the router

!--- to be used in the absence of other aaa statements.

aaa new-model

username cisco password 0 cisco

line vty 0 4

!--- Instead of aaa new-model, the login local command may be used.ip domain-name rtp.cisco.com

!--- Generate an SSH key to be used with SSH.

Testing Authentication With SSH:

cry key generate rsa

ip ssh time-out 60

ip ssh authentication-retries 2

ip domain-name rtp.cisco.com

!--- Generate an SSH key to be used with SSH.

cry key generate rsa

ip ssh time-out 60

ip ssh authentication-retries 2

line vty 0 4

!--- Prevent non-SSH telnets.

transport input ssh

ssh

!--- Step 1: Configure hostname if you have not previously done so.

hostname carter

!--- aaa new-model causes the local username/password on the router

!--- to be used in the absence of other AAA statements.

aaa new-model

username cisco password 0 cisco

!--- Step 2: Configure the router's DNS domain.

ip domain-name rtp.cisco.com

!--- Step 3: Generate an SSH key to be used with SSH.

cry key generate rsa

ip ssh time-out 60

ip ssh authentication-retries 2

!--- Step 4: By default the vtys' transport is Telnet. In this case,

!--- Telnet has been disabled and only SSH is supported.

line vty 0 4

transport input SSH

!--- Instead of aaa new-model, the login local command may be used.

测试ssh

ssh -l cisco -c 3des 10.13.1.99

Adding SSH Terminal-Line Access

ip ssh port 2001 rotary 1

line 1 16

no exec

rotary 1

transport input ssh

exec-timeout 0 0

modem In Out

Stopbits 1

 
 
 
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