how to configure ssh2 for not asking password when logging from remote Post: 302252108

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Operating Systems AIX how to configure ssh2 for not asking password when logging from remote Post 302252108 by arunrao_oradba on Tuesday 28th of October 2008 08:51:11 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

Warning: It is not nice to hijack the threads of other people with your problems so you should be polite and open a thread on your own next time, which I did now for you this time. Also a hint to make your thread more readable is to use [ code ] and [ /code ] tags to display your logs/code etc.

Last edited by zaxxon; 10-29-2008 at 05:34 AM.. Reason: Moderation, thread hijack

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netrc

netrc(4)							   File Formats 							  netrc(4)

NAME

       netrc - file for ftp remote login data

DESCRIPTION

       The  .netrc  file  contains  data  for  logging in to a remote host over the network for file transfers by ftp(1). This file resides in the
       user's home directory on the machine initiating the file transfer. Its permissions should be set to disallow read access by group and  oth-
       ers. See chmod(1).

       Tokens can be separated by SPACE, TAB, or NEWLINE characters. The following tokens are supported:

       account string	  Supply an additional account password. If this token is present, the auto-login process supplies the specified string if
			  the remote server requires an additional account password. If the remote server does not require an  additional  account
			  password, the auto-login process initiates an ACCT command.

       default		  Same	as  machine  name, except that default matches any name. There can be only one default token, and it must be after
			  all machine tokens. The default token is normally used as follows:

			    default login anonymous password user@site

			  Such an entry gives the user automatic anonymous ftp login to machines not specified in .netrc.

       login name	  Identify a user on the remote machine. If this token is present, the auto-login process  initiates  a  login	using  the
			  specified name.

       machine name	  Identify  a  remote  machine	name. The auto-login process searches the .netrc file for a machine token that matches the
			  remote machine specified on the ftp command line or as an open command argument. Once a match is  made,  the	subsequent
			  .netrc tokens are processed, stopping when the EOF is reached or another machine token is encountered.

       macdef name	  Define  a  macro.  This token functions the same as ftp macdef. A macro is defined with the specified name; its contents
			  begin with the next .netrc line and continue until a null line (consecutive NEWLINE characters)  is  encountered.  If  a
			  macro named init is defined, it is automatically executed as the last step in the auto-login process.

       password string	  Supply  a  password. If this token is present, the auto-login process supplies the specified string if the remote server
			  requires a password as part of the login process. If this token is present in the .netrc file, ftp aborts the auto-login
			  process if the .netrc is readable by anyone besides the user.

       skipsyst 	  Skip	the SYST command that is sent by default to all remote servers upon connection. The system command is what enables
			  the automatic use of binary mode rather than the protocol default ascii mode.

			  As some older servers cannot handle the ftp command, this directive is provided to allow  inter-operability  with  these
			  servers.

EXAMPLES

       Example 1 A Sample .netrc File

       A .netrc file containing the following line:

	 machine ray login demo password mypassword

       allows an autologin to the machine ray using the login name demo with password mypassword.

FILES

       ~/.netrc

SEE ALSO

       chmod(1), ftp(1), in.ftpd(1M)

SunOS 5.11							    25 Aug 2006 							  netrc(4)