crafting dead servers without username and password

CRAFTING DEAD SERVERS WITHOUT USERNAME AND PASSWORD HOW TO
CRAFTING DEAD SERVERS WITHOUT USERNAME AND PASSWORD PASSWORD

Your identification has been saved in /home/user/.ssh/id_rsa. Output for ssh-keygen -t rsa: Generating public/private rsa key pair.Įnter file in which to save the key (/home/user/.ssh/id_rsa):Įnter passphrase (empty for no passphrase): For maximum security (over kill for our purpose), if you want you can increase the key to 4096 bit for RSA. $ ssh-keygen -t rsaīy default, *ssh-keygen* or *ssh-keygen -t rsa* will create a 2048 bit RSA key pair. Meaning that if you send an encrypted message, everyone can encrypt data for you to read by using public key, but only you have a private key (only you have it) which is required to decrypt the data. The greatest benefit of using RSA is RSA uses asymmetric keys. RSA (Rivest-ShamirAdleman) algorithm is a cryptosystem, owned by RSA Security which similar to DSA is widely used to transmit date securely over networks or the Internet. Your ssh private/public keys will be generated and saved to your home ~/.ssh directory. By default if you don’t defined which algorithm, ssh-keygen will create RSA. SSH supports both RSA and DSA, there are differences between DSA and RSA, but for our purpose to encrypt and decrypt data for SSH (Secure Shell), it’s up to use what to choose.

CRAFTING DEAD SERVERS WITHOUT USERNAME AND PASSWORD PASSWORD

Note: Keys can be used with a password (passphrase to be correct) or without one. Secure Shell keys are made of two keys: a private key, that must be kept secret, and a public key which can be uploaded to any computer you need to access a ssh server.

Key-based authentication is more convenient and secure than tradition password authentication since both private/public key is encrypted with asymmetric cryptography.

CRAFTING DEAD SERVERS WITHOUT USERNAME AND PASSWORD HOW TO

In this article I’m going to show you how to SSH login without password by using private/public key-based authentication system.

With a good strong password, it’s secure enough to use SSH since everything is encrypted through SSH. Username and password authentication is normally used to establish connection. We use SSH or Secure Shell to make connection between computers to execute commands.

Crafting dead servers without username and password