how to configure ssh2 for not asking password when logging from remote Post: 302252174

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Special Forums Cybersecurity how to configure ssh2 for not asking password when logging from remote Post 302252174 by arunrao_oradba on Tuesday 28th of October 2008 10:09:56 PM

10-28-2008

Registered User

how to configure ssh2 for not asking password when logging from remote

Hi gurus,
I am trying to configure ssh2 for not asking passwords when logging in from a remote machine, but it is failing. I ran the command based on the oracle documentation. down below are the steps, please do let me know how to get this solved.
the steps followed
$ /usr/bin/ssh-keygen2 -t dsa
Generating 2048-bit dsa key pair
16 .oOOo.oOo.oO
Key generated.
2048-bit dsa, uvarshne@sunsm1a, Tue Oct 28 2008 18:02:01 -0500
Passphrase :
Again :
Key is stored with NULL passphrase.
(You can ignore the following warning if you are generating hostkeys.)
This is not recommended.
Don't do this unless you know what you're doing.
If file system protections fail (someone can access the keyfile),
or if the super-user is malicious, your key can be used without
the deciphering effort.
Private key saved to /home/dba/uvarshne/.ssh2/id_dsa_2048_b
Public key saved to /home/dba/uvarshne/.ssh2/id_dsa_2048_b.pub
$ /usr/bin/ssh-keygen2 -t rsa
Generating 2048-bit rsa key pair
4 .oOo.oOo.oOo
Key generated.
2048-bit rsa, uvarshne@sunsm1a, Tue Oct 28 2008 18:10:01 -0500
Passphrase :
Again :
Key is stored with NULL passphrase.
(You can ignore the following warning if you are generating hostkeys.)
This is not recommended.
Don't do this unless you know what you're doing.
If file system protections fail (someone can access the keyfile),
or if the super-user is malicious, your key can be used without
the deciphering effort.
Private key saved to /home/dba/uvarshne/.ssh2/id_rsa_2048_b
Public key saved to /home/dba/uvarshne/.ssh2/id_rsa_2048_b.pub

$ touch ~/.ssh2/authorization

$ ssh2 cat id_rsa_2048_*.pub >> authorization^C
$ stty erase
$ ssh2 ^C
$ uname -a
SunOS sunsm1a 5.8 Generic_117350-39 sun4u sparc SUNW,Sun-Fire-280R
$ ssh2 sunsm1a cat ^C
$ pwd
/home/dba/uvarshne/.ssh2

$ ssh2 sunsm1a /home/dba/uvarshne/.ssh2/id_rsa_2048_*.pub >> authorization
Host key not found from database.
Key fingerprint:
xihel-hobyk-mimiv-tifal-dicyb-vubul-hezek-begap-nafyg-lamym-bexux
You can get a public key's fingerprint by running
% ssh-keygen -F publickey.pub
on the keyfile.
warning: tcgetattr failed in ssh_rl_set_tty_modes_for_fd: fd 1: Inappropriate ioctl for device

^C
Received signal 2. (no core)

$ cat id_rsa_2048_b.pub >authorization
$ cat id_dsa_2048_b.pub >>authorization

$ ssh sunsm1a date
Host key not found from database.
Key fingerprint:
xihel-hobyk-mimiv-tifal-dicyb-vubul-hezek-begap-nafyg-lamym-bexux
You can get a public key's fingerprint by running
% ssh-keygen -F publickey.pub
on the keyfile.
Are you sure you want to continue connecting (yes/no)? yes
Host key saved to /home/dba/uvarshne/.ssh2/hostkeys/key_22_sunsm1a.pub
host key for sunsm1a, accepted by uvarshne Tue Oct 28 2008 18:14:22 -0500

uvarshne's password:

I am not sure where i am going wrong
Can you please help me out on this.

thanks in advance
Arun

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ssh-copy-id

SSH-COPY-ID(1)						      General Commands Manual						    SSH-COPY-ID(1)

NAME

       ssh-copy-id - install your public key in a remote machine's authorized_keys

SYNOPSIS

       ssh-copy-id [-i [identity_file]] [user@]machine

DESCRIPTION

       ssh-copy-id is a script that uses ssh to log into a remote machine (presumably using a login password, so password authentication should be
       enabled, unless you've done some clever use of multiple identities)

       It also changes the permissions of the remote user's home, ~/.ssh, and ~/.ssh/authorized_keys to remove group writability (which would oth-
       erwise prevent you from logging in, if the remote sshd has StrictModes set in its configuration).

       If  the -i option is given then the identity file (defaults to ~/.ssh/id_rsa.pub) is used, regardless of whether there are any keys in your
       ssh-agent.  Otherwise, if this:

	     ssh-add -L

       provides any output, it uses that in preference to the identity file.

       If the -i option is used, or the ssh-add produced no output, then it uses the contents of the identity file.  Once it has one or more  fin-
       gerprints (by whatever means) it uses ssh to append them to ~/.ssh/authorized_keys on the remote machine (creating the file, and directory,
       if necessary)

SEE ALSO

       ssh(1), ssh-agent(1), sshd(8)

OpenSSH 							 14 November 1999						    SSH-COPY-ID(1)