1. Crypto Key Generate Rsa General-keys Modulus 2048 Noconfirm
2. Crypto Key Generate Rsa Modulus 2048 No Confirm Number
3. Crypto Key Generate Rsa Modulus 2048 No Confirm Code

One needs to define domain-name before it's possible to generate SSH keys: sw1(config)#crypto key generate rsa% Please define a domain-name first. Sw1(config)#ip domain-name test.net sw1(config)#crypto key generate rsa The name for the keys will be: sw1.test.net Choose the size of the key modulus in the range of 360 to 2048 for your General Purpose Keys. Mar 07, 2016  Cisco kron script to generate SSH key Hi there, Here's what I'm trying to accomplish: I want to copy a text file with my config to my routers. When I'm ready, I'll copy the config from flash over to the startup config so that when it boots back up, it becomes a different router. I need help using RSA encryption and decryption in Python. I tried to generate a public key and a private key by using RSA 2048, then send the public key as hex to a destination. However, I faced a problem, the generated public key size is greater than 2048 bit. I used the following script. Could I know why the key size is greater than 2048 bit? Crypto key generate rsa general-keys label tokenkey1 storage usbtoken0: The following example specifies the redundancy keyword: Router(config)# crypto key generate rsa label MYKEYS redundancy. The name for the keys will be: MYKEYS. Choose the size of the key modulus in the range of 360 to 2048 for your. General Purpose Keys. RSA (Rivest–Shamir–Adleman) is one of the first public-key cryptosystems and is widely used for secure data transmission. In such a cryptosystem, the encryption key is public and distinct from the decryption key which is kept secret (private). In RSA, this asymmetry is based on the practical difficulty of factoring the product of two large prime numbers, the 'factoring problem'. The problem I am encountering is that I am able to decrypt data using the same RSA 2048-bit public key that was used to encrypt the data. It seems to me that this defeats the entire purpose of encrypting the data in the first place, if a public key can decrypt it.

KB ID 0001322

Problem

Crypto Key Generate Rsa General-keys Modulus 2048 Noconfirm

I’ve lost count of the number of times this has happened to me! Most of my colleagues prefer to use the ASDM for remote management, but if (like me) you work at command line, then sometimes people <ahem> forget to generate the RSA keypair when deploying a firewall. Then even if SSH access and AAA is setup correctly, you still can’t get in via SSH. Instead you see the following;

RoyalTS and RoyalTSX: ssh_exchange_identification: Connection closed by remote host.

PuTTY: PuTTY Fatal Error: Server unexpectedly closed network connection.

SecureCRT: Connection closed.

OSX/Linux: ssh_exchange_identification: Connection closed by remote host.

Crypto Key Generate Rsa Modulus 2048 No Confirm Number

Now at command line you can fix this with a ‘Crypto Key Generate RSA Modulus 2048‘ command, but you can’t get to command line only ASDM.

Crypto Key Generate Rsa Modulus 2048 No Confirm Code

Solution

On older versions of the ASDM you could generate the keypair in the Identification Certificates section (well you still can but only if you are also generating a certificate request file). So, as we are command line warriors, lets use the ASDM’s command line!

Tools > Command Line Interface > Multiple Line

Send > Wait a couple of minutes and try again.

REMEMBER: I’m assuming you have SSH setup correctly if not, see the following article;

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