12-18-2013
Passwordless SSH works, scp does not
I know the "how to setup passwordless SSH" question is asked probably 5 times a week.
I know how to setup passwordless SSH, it's not tough, however after reinstalling linux on my server, I found a problem. I could SSH into my server just fine, no password required, however SCP still required a password. I fixed it by simply regenerating the keys on the client and deleting the authorized_keys files on the server, essentially re-doing the passwordless ssh setup.
What would cause SCP to require a password but not SSH? If I remember correctly, it was asking me for a password for the public key file (which you can input during the key generation phase.) But, if I accidently put a password on the public key, ssh should have required it as well, correct?
After a quick google search I found that in the authorized_keys file can actually allow certain services but not others? Is that true?
Again, I've fixed the problem, this question is pure curiosity.
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LEARN ABOUT DEBIAN
net::openssh::compat::perl
Net::OpenSSH::Compat::Perl(3pm) User Contributed Perl Documentation Net::OpenSSH::Compat::Perl(3pm)
NAME
Net::OpenSSH::Compat::Perl - Net::OpenSSH adapter for Net::SSH::Perl API compatibility
SYNOPSIS
use Net::OpenSSH::Compat::Perl qw(:supplant);
use Net::SSH::Perl;
my $ssh = Net::SSH::Perl->new('host');
$ssh->login($user, $passwd);
my ($out, $err, $rc) = $ssh->cmd($cmd);
DESCRIPTION
This module implements a subset of Net::SSH::Perl API on top of Net::OpenSSH.
After the module is loaded as...
use Net::OpenSSH::Compat::Perl qw(:supplant);
... it supplants the Net::SSH::Perl module as if it were installed on the machine using Net::OpenSSH under the hood to handle SSH
operations.
Setting defaults
The hash %Net::OpenSSH::Compat::Perl::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::SSH::Perl API.
The entries currently supported are:
connection => [ %opts ]
Extra options passed to "Net::OpenSSH::new" constructor.
Example:
$Net::OpenSSH::Compat::SSH::Perl::DEFAULTS{connection} =
[ ssh_path => "/opt/SSH/bin/ssh" ];
BUGS AND SUPPORT
This is a work in progress.
"register_handler" method is not supported.
Net::SSH::Perl submodules (i.e. Net::SSH::Perl::Channel) are not emulated.
Anyway, if your Net::SSH::Perl 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::SSH::Perl
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 2012-02-24 Net::OpenSSH::Compat::Perl(3pm)