10-28-2008
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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LEARN ABOUT DEBIAN
net::openssh::compat::ssh2
Net::OpenSSH::Compat::SSH2(3pm) User Contributed Perl Documentation Net::OpenSSH::Compat::SSH2(3pm)
NAME
Net::OpenSSH::Compat::SSH2 - Net::OpenSSH adapter for Net::SSH2 API compatibility
SYNOPSIS
use Net::OpenSSH::Compat::SSH2 qw(:supplant);
use Net::SSH2;
my $ssh2 = Net::SSH2->new;
$ssh2->connect('host');
$ssh2->auth_publickey("jsmith",
"/home/jsmith/.ssh/id_dsa.pub",
"/home/jsmith/.ssh/id_dsa");
my $c = $ssh2->channel;
$c->exec("ls");
print while <$c>;
$c->close;
print "exit status: ", $c->exit_status, "
";
DESCRIPTION
This module implements Net::SSH2 API on top of Net::OpenSSH.
After the module is loaded as...
use Net::OpenSSH::Compat::SSH2 qw(:supplant);
it will supplant the Net::SSH2 module as if it was installed on the machine and use Net::OpenSSH under the hood to handle SSH operations.
Most programs using Net::SSH2 should continue to work without any change.
Setting defaults
The hash %Net::OpenSSH::Compat::SSH2::DEFAULTS can be used to set default values for Net::OpenSSH and other modules called under the hood
and otherwise not accesible through the Net::SSH2 API.
The entries currently supported are:
connection => [ %opts ]
Extra options passed to "Net::OpenSSH::new" constructor.
Example:
$Net::OpenSSH::Compat::SSH2::DEFAULTS{connection} =
[ ssh_path => "/opt/SSH/bin/ssh" ];
channel => [ %opts ]
Extra options passed to "Net::OpenSSH::open_ex" method.
sftp => [ %opts ]
Extra options passed to "Net::SFTP::Foreign::new" constructor.
$Net::OpenSSH::Compat::SSH2::DEFAULTS{connection} =
[ read_ahead => 128 * 1024, queue_size => 20 ];
BUGS AND SUPPORT
This is a work in progress.
Besides that, there are some functionality of Net::SSH2 that can not be emulated with Net::OpenSSH. Fortunatelly, the missing bits are
rarely used so probably you may not need them at all.
Specifically, the return values from the "$ssh2->method($ATTR)" are not real but faked ones. "auth_list" return value is also faked.
Anyway, if your Net::SSH2 script fails, fill a bug report at the CPAN RT bugtracker
(https://rt.cpan.org/Ticket/Create.html?Queue=Net-OpenSSH-Compat <https://rt.cpan.org/Ticket/Create.html?Queue=Net-OpenSSH-Compat>) or just
send me an e-mail with the details.
Include at least:
1 - The full source of the script
2 - A description of what happens in your machine
3 - What you thing it should be happening
4 - What happens when you use the real Net::SSH2
5 - The version and name of your operating system
6 - The version of the OpenSSH ssh client installed on your machine ("ssh -V")
7 - The Perl version ("perl -V")
8 - The versions of the Perl packages Net::OpenSSH, IO::Pty and this Net::OpenSSH::Compat.
Git repository
The source code repository is at https://github.com/salva/p5-Net-OpenSSH-Compat <https://github.com/salva/p5-Net-OpenSSH-Compat>.
My wishlist
If you like this module and you're feeling generous, take a look at my Amazon Wish List: <http://amzn.com/w/1WU1P6IR5QZ42>
Also consider contributing to the OpenSSH project this module builds upon: <http://www.openssh.org/donations.html>.
COPYRIGHT AND LICENSE
Copyright (C) 2011 by Salvador Fandin~o (sfandino@yahoo.com)
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.10.0 or,
at your option, any later version of Perl 5 you may have available.
perl v5.14.2 2011-09-28 Net::OpenSSH::Compat::SSH2(3pm)