Subject: Re: [libssh2] libssh2-0.15 Problems authenticating

Re: [libssh2] libssh2-0.15 Problems authenticating

From: James Housley <jim_at_thehousleys.net>
Date: Wed, 18 Jul 2007 12:42:17 -0400

On Jul 18, 2007, at 8:04 AM, Guenter Knauf wrote:

> Hi all,
> Paul brought here up that password authentication with the ssh2.c
> sample permanently fails for him.
> At fist I couldnt re-create that, probably because I tested against
> older openssl versions:
>
>> What version of openssh does your linux box run that you are
>> connecting too?
>> Mine's using openssh-4.5_p1-r1. And what distro and release are you
>> running? Redhat? Mandriva? Suse? *buntu? And what version?
> I used:
> SuSE 7.0 --> SSH Version OpenSSH_2.1.1, protocol versions 1.5/2.0
> NetWare 6.5 --> OpenSSH_3.7.1p2, SSH protocols 1.5/2.0, OpenSSL
> 1.8.2.0 18 Nov 2004
>
> after Paul sent me credentials to test against his box I saw same
> failing as he,
> and then tested against some boxes which run newer openssl, f.e.:
> SuSE 10.0 --> OpenSSH_4.1p1, OpenSSL 0.9.7g 11 Apr 2005
>
> and there I also saw the authentication fail.
>
> On the way to find out what causes this difference I inserted a
> check into ssh2.c to see what authentication methods are allowed:
> http://libssh2.cvs.sourceforge.net/libssh2/libssh2/example/simple/
> ssh2.c?r1=1.6&r2=1.7
>
> but now when I compile the ssh2 sample with this code it allways
> fails -- even against the boxes where the auth previously seemed to
> work! What am I doing wrong? Or what's going on there....?
>

Using NULL is not really supported as noted in both the online docs
and included man page for libssh2_auth_list. You really need to send
the username you intend to use.

Jim

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Received on 2007-07-18