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6.8

SSH without password same host

Asked by sudhi in Linux Network Security

Tags: ssh, modes, authentication, password, without

Hi All,

I'm trying to configure ssh to log in without any password on the same box. Assuming the box name is : test123 and the OS user is : oracle, the following line should work without prompting for the password:

$ ssh test123 date

But everytime I do that, it still prompts me for password. The steps that I've followed are :

1. Generate the keys using ssh-keygen. I've used an empty passphrase.
[oracle@test123 oracle]$ ssh-keygen -t dsa

2. Copy the contents of id_dsa.pub to authorized_keys
[oracle@test123 .ssh]$ cat id_dsa.pub > authorized_keys

3. Try the ssh <hostname> <command> :
[oracle@test123 .ssh]$ ssh test123 date
oracle@test123's password:
Mon Mar 15 20:03:39 IST 2004

4. Here is the verbose output of it :

[oracle@test123 .ssh]$ ssh -v test123 date
OpenSSH_3.6.1p2, SSH protocols 1.5/2.0, OpenSSL 0x0090701f
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug1: Rhosts Authentication disabled, originating port will not be trusted.
debug1: Connecting to test123 [152.69.168.69] port 22.
debug1: Connection established.
debug1: identity file /home/oracle/.ssh/identity type -1
debug1: identity file /home/oracle/.ssh/id_rsa type -1
debug1: identity file /home/oracle/.ssh/id_dsa type 2
debug1: Remote protocol version 1.99, remote software version OpenSSH_3.6.1p2
debug1: match: OpenSSH_3.6.1p2 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_3.6.1p2
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-cbc hmac-md5 none
debug1: kex: client->server aes128-cbc hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug1: Host 'test123' is known and matches the RSA host key.
debug1: Found key in /home/oracle/.ssh/known_hosts:1
debug1: ssh_rsa_verify: signature correct
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,password,keyboard-interactive
debug1: Next authentication method: publickey
debug1: Trying private key: /home/oracle/.ssh/identity
debug1: Trying private key: /home/oracle/.ssh/id_rsa
debug1: Offering public key: /home/oracle/.ssh/id_dsa
debug1: Authentications that can continue: publickey,password,keyboard-interactive
debug1: Next authentication method: keyboard-interactive
debug1: Authentications that can continue: publickey,password,keyboard-interactive
debug1: Next authentication method: password
oracle@test123's password:

Any help in getting this done is highly appreciated.

Thanks,
Sudhi.


 
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Keywords: SSH without password same host
Title
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Zone: Linux Network Security
Tags: ssh, modes, authentication, password, without
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Solution Provided By: liddler
Participating Experts: 2
Solution Grade: A
 
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