SSH Access Denied from Windows using PuTTY

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1

Sorry for the newbie post - first time poster, long time reader…

I recently installed SUSE 12.2 x64 on a new machine with the default configuration. After installation, I am able to ssh to the new box from another linux box without problem (all is well). However, when I try to use PuTTY on Windows and ssh to the new SUSE box, I receive the following error in PuTTY:
Using username “myusername”.
Using keyboard-interactive authentication.
Password:
Access denied
Using keyboard-interactive authentication.
Password:

When I check /var/log/message I see the following:
sshd : error : PAM : authentication failure for myusername from xxx.xxx.xxx.xxx

It seems strange to me that ssh would work from other linux boxes and not from windows boxes (I even tried from an iPad with the same result as using PuTTY).

All boxes are connected through a network switch (TRENDnet Gigabit Switch TEG-S240TX) which is then connected to my DSL box (ActionTech M1000).

I have been searching the web for similar posts and working on a resolution for several days now…

Any comments would be greatly appreciated.

Thanks in advance!!

2

On 2012-11-11 04:36, AzDiver wrote:
> Any comments would be greatly appreciated.

If I recall correctly, I had the same problem, not solved. I’m not sure
if it was putty or winscp which fails.

–
Cheers / Saludos,

Carlos E. R.
(from 11.4 x86_64 “Celadon” (Minas Tirith))

3

Which PuTTY version? I remember seeing this with relatively old PuTTY and relatively new Linux (or rather OpenSSH) versions. With current PuTTY I never have seen it so far.

4

Carlos,

Thanks for the reply!! I’m not so sure the problem is related to the ssh client. I have used several ssh clients; all with the same result.

I think the PAM authentication error is pointing towards the real issue?? I have been blindly trying different things:

  1. Adding “auth required pam_access.so” to /etc/pam.d/sshd and then appending “+ : ALL : ALL” to /etc/security/access.conf

So far - no dice!!

Any ideas??

Thanks again…

5

I’m using PuTTY Release 0.62 from putty.org. I just downloaded and installed it this week. Seems like the release number is pretty low ???

As mentioned to Carlos, I have tried other ssh clients; one from BitVise on Windows7, another on the iPad (don’t remember the name).

Any suggestions on which Windows ssh client I should be using??

Thanks again,
Dave

6

Am 11.11.2012 07:26, schrieb AzDiver:
> I’m not so sure the problem is related to the
> ssh client. I have used several ssh clients; all with the same result.

I doubt that it is the client. For testing I downloaded putty 0.62 to a
Win7 Prof. and can without problem log into my PC and my laptop (both
openSUSE 12.2).
Other than that feedback I am afraid to be of no help.

–
PC: oS 12.2 x86_64 | i7-2600@3.40GHz | 16GB | KDE 4.8.5 | GeForce GT 420
ThinkPad E320: oS 12.2 x86_64 | i3@2.30GHz | 8GB | KDE 4.9.3 | HD 3000
eCAFE 800: oS 11.4 i586 | AMD Geode LX 800@500MHz | 512MB | lamp server

7

On 11/11/2012 04:36 AM, AzDiver wrote:
>
> sshd : error : PAM : authentication failure for myusername from

make absolutely certain that the password you set on the linux machine
is the same as the password your window’s client is sending…

that is, neither “PASSWORD” nor “PåssWõrd” nor “password” being
actually sent from the windows client will unlock linux if “PassWord”
is the actually expected pass phrase…

so, you have to make sure the combo of your keyboard setting and Windows
system’s character encoding/code page selection is passing the exactly
same character to Linux as you told linux to expect…

and, there are some characters which are not ‘legal’ in a
password…don’t use any of those… (no, i don’t know for sure what may
be ‘legal’ in linux but may be blocked as illegal in the windows client,
or vice versa)

you can easy check for all of that by making a very simple temporary
password on the linux side and see if you get in then, from windows…

–
dd http://tinyurl.com/DD-Caveat

8

On 2012-11-11 07:26, AzDiver wrote:
> Thanks for the reply!! I’m not so sure the problem is related to the
> ssh client. I have used several ssh clients; all with the same result.

Well, my laptop double boots with Linux and Windows. With linux I could
login, with Windows not. What changed was the client…

–
Cheers / Saludos,

Carlos E. R.
(from 11.4 x86_64 “Celadon” (Minas Tirith))

9

AzDiver wrote:

>
> Carlos,
>
> Thanks for the reply!! I’m not so sure the problem is related to the
> ssh client. I have used several ssh clients; all with the same
> result.
>
> I think the PAM authentication error is pointing towards the real
> issue?? I have been blindly trying different things:
> 1. Adding “auth required pam_access.so” to /etc/pam.d/sshd and then
> appending “+ : ALL : ALL” to /etc/security/access.conf
>
> So far - no dice!!
>
> Any ideas??
>
> Thanks again…
>
>
Putty 0.60 running on XP connects to my OpenSuse 11.4 with no problems
at all.

–
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