ssh without password

Briefly describe the method: First, run the command ssh-keygen-t sra \ on the local machine to generate the RSA key. (This command generates a key pair: id_rsa and id_rsa.pub. They are saved in ~ by default ~ /. Ssh/directory. You can change id_rsa.pub to local_rsa.pub to avoid the same name as id_rsa.pub on the remote host. During the generation process, pass phrase is required. This is used to protect t

1. A host generates a key pairssh-keygen-t RSA2. The public key of host A is sent to Host BSCP id_rsa.pub Linux2:/cloud //SCP: is a command of the SSH protocol, remote replication3. Add a host's public key to the authorization list of Host B(1) General B host has just started and did not have this file, first and a as first created. SSH directoryssh-keygen-t RSA(2) Add the Authorized_keys file to the

Configuring SSH password-free login takes 3 steps:1. Generate public and private keys2. Import the public key to the authentication file, change the permissions3. Testing1. Generate the public and private key shell code Ssh-keygen-t Dsa-p "-F ~/.SSH/ID_DSA The default is to generate two files in the ~/.

① Configuring the console login password　　The first way to configure authentication (AAA)[Server] AAA (authentication mode)[SERVER-AAA] local-user admin1234 password irreversible-cipher (irreversible password) [email protected] (local user admin1234 password)[SERVER-AAA] Local-user admin1234 Privilege level 15 (local u

1) Generate key: Execute the following statement in the root directory (CD ~/user root):Ssh-keygen-t Dsa-p "-F ~/.SSH/ID_DSAThe above is a two single quotation mark.2) Append the id_dsa.pub (public key) to the authorized key:Cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys3) Copy the authentication file to the other nod

Your AimYou want the use of Linux and OpenSSH to automate your tasks. Therefore need an automatic login from host A/user A to host B/user B. You don't want to enter any passwords, because you want to call ssh from a within a shell script.How to do itFirst log in on a as user A and generate a pair of authentication keys. Do not enter a passphrase:[Email protected]:~> ssh-keygen-t rsagenerating public/private

The new server OS uses the Ubuntu Server version, which is a lot different from the familiar CentOS. In peacetime work, we log on to the server, is generally the way to use the SSH password. In fact, there is another way, that is, through the SSH key to the server. Both of these methods are security authentication methods of