Cấu Hình Telnet & SSH Cho Switch Cisco - Nguyen Manh Dung

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Hi all,

Mình sẽ cùng các bạn cấu hình telnet và SSH cho Switch Cisco

I. Cấu hình Telnet cho Switch Cisco 

SW-Core#conf t

SW-Core(config)#line vty 05

SW-Core(config-line)#password yourpasswod

SW-Core(config-line)#login

11.png

Setup password Enable cho Switch Cisco

SW-Core#conf t

SW-Core(config)#enable password yourpasswod

11.png

11.png

II. Cấu hình SSH cho Switch Cisco 

1) Set the hostname and domain name

switch# config t switch(config)# hostname OTGswitch OTGswitch(config)# ip domain-name OTG.com

2) Generate RSA keys for encryption

OTGswitch(config)# crypto key generate rsa The name for the keys will be: OTGswitch.OTG.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]:

Choose 1024 if you want higher security.

3) Configure VTYs (Virtual Terminal Lines)

OTGswitch(config)# line vty 0 4 OTGswitch(config-line)# login local OTGswitch(config-line)# transport input ssh OTGswitch(config-line)# exit

This means we will use local database on this switch for authentication and disable Telnet by specifying SSH only on VTYs 0 to 4.

If your device supports 16 VTYs amend the command as follows:

OTGswitch(config)# line vty 0 15 OTGswitch(config-line)# login local OTGswitch(config-line)# transport input ssh OTGswitch(config-line)# exit

4)Create an account

OTGswitch(config)# username OTGuser privilege 15 secret OTGpass

Here username is OTGuser, password is OTGpass and privilege 15 means the user has full access rights.

5)Set time-out interval

OTGswitch(config)# line vty 0 4 OTGswitch(config-line)# exec-timeout 5

This sets a timeout interval of 5 minutes so your session expires in 5 minutes if you left it idle.

Chúc các bạn thao tác thành công ❤ ❤ ❤

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