Cisco 3560 Generate Ssh Key

Posted : admin On 25.05.2020

Jan 14, 2018 Secure Shell Version 2 Enhancements for RSA Keys. Cisco SSH Version 2 supports keyboard-interactive and password-based authentication methods. The SSH Version 2 Enhancements for RSA Keys feature also supports RSA-based public key authentication for the client and the server. I have a cisco 3560 switch running IOS v. I enabled SSH and aaa new-model and now I cannot telnet or SSH into the deviceI only have console access. If I can disable ssh and revert back to. Nov 23, 2011  Do you really want to remove these keys? yes/no: yes. Then try generating a new RSA keypair anew: configure terminal. Crypto key generate rsa label ssh modulus 1024. The name for the keys will be: ssh% The key modulus size is 1024 bits% Generating 1024 bit RSA keys, keys will be non-exportable. OK (elapsed time was 3 seconds). Platform: Catalyst 2960-X, Catalyst 3560, ISR Routers Secure Shell (SSH) allows encrypted communication with devices. To enable SSH on device you need to have crypto image (or license supporting SSH). First, generate RSA keys for encyption.

Q: I have a Cisco switch in my network, which I can access by hooking up a console cable directly to the device. I like to access the switch remotely using SSH. How can I enable ssh on my Cisco 3750 Catalyst Switch?
A: By default, when you configure a Cisco device, you have to use the console cable and connect directly to the system to access it. Follow the steps mentioned below, which will enable SSH access to your Cisco devices. Once you enable SSH, you can access it remotely using PuTTY or any other SSH client.

1. Setup Management IP

First, make sure you have performed basic network configurations on your switch. For example, assign default gateway, assign management ip-address, etc. If this is already done, skip to the next step.

In the following example, the management ip address is set as 192.168.101.2 in the 101 VLAN. The default gateway points to the firewall, which is 192.168.101.1

2. Set hostname and domain-name

Configure Ssh On Cisco Switch

Next, make sure the switch has a hostname and domain-name set properly.

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3. Generate the RSA Keys

The switch or router should have RSA keys that it will use during the SSH process. So, generate these using crypto command as shown below.

Cisco Ios Enable Ssh

Also, if you are running on an older Cisco IOS image, it is highly recommended that you upgrade to latest Cisco IOS.

4. Setup the Line VTY configurations

Setup the following line vty configuration parameters, where input transport is set to SSH. Set the login to local, and password to 7.

If you have not set the console line yet, set it to the following values.

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5. Create the username password

Cisco 3560 Generate Ssh Key

If you don’t have an username created already, do it as shown below.

Note: If you don’t have the enable password setup properly, do it now.

Make sure the password-encryption service is turned-on, which will encrypt the password, and when you do “sh run”, you’ll seee only the encrypted password and not clear-text password.

5. Verify SSH access

From the switch, if you do ‘sh ip ssh’, it will confirm that the SSH is enabled on this cisco device.

After the above configurations, login from a remote machine to verify that you can ssh to this cisco switch.

In this example, 192.168.101.2 is the management ip-address of the switch.

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Cisco 3560 Generate Ssh Key Password

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