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.
- How To Generate Rsa Key On Cisco Switch
- Command To Generate Rsa Key On Cisco Switch Key
- Generate Rsa Key Pair
- Command To Generate Rsa Key On Cisco Switch Windows 10
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.
Crypto key generate rsa. cryptokeygeneratersa,page2 Cisco IOS Security Command Reference: Commands A to C, Cisco IOS XE Release 3SE (Catalyst 3850 Switches). The following example shows how to encrypt the RSA key 'pki1-72a.cisco.com.' Thereafter, the show crypto key mypubkey rsa command is issued to verify that the RSA key is encrypted (protected) and unlocked.
Cisco IOS Software, C3560 Software (C3560-IPSERVICESK9-M), Version 12.2(55)SE, RELEASE SOFTWARE (fc2) Switch(config)#crypto key generate rsa The name for the keys will be: ##### 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.
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
Next, make sure the switch has a hostname and domain-name set properly.
3. Generate the RSA Keys
How To Generate Rsa Key On Cisco Switch
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.
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.
5. Create the username password
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.
Command To Generate Rsa Key On Cisco Switch Key
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.
If you enjoyed this article, you might also like..
Generate Rsa Key Pair
Command To Generate Rsa Key On Cisco Switch Windows 10
Next post: How to Backup Oracle Database using RMAN (with Examples)
Previous post: How to Use C++ Single and Multiple Inheritance with an Example