Cannot access SuSE 9.0 through PuTTY

Radu Voicu

25 Oct 2003 25 Oct '03

07:03

Hi there! I am trying to access my machine at work with PuTTY (the latest version) and I keep obtaining "access denied"... though, I can connect from any machine running Linux... so... what's wrong in this picture? :) Regards, Radu

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Armin Schoech

25 Oct 25 Oct

07:48

New subject: [suse-security] Cannot access SuSE 9.0 through PuTTY

Hi !

...

I am trying to access my machine at work with PuTTY (the latest version) and I keep obtaining "access denied"... though, I can connect from any machine running Linux... so... what's wrong in this picture? :)

--> You are using access by password not by key-pairs, are you ? I had a similar problem: connection with PuTTY or the SSH.COM Win-Client with password don't work but it works with secret key. With a Linux client both method works. In my case, it was due to a configuration in /etc/ssh/sshd_config where I had a combination of: # To disable tunneled clear text passwords, change to no here! PasswordAuthentication no # Set this to 'yes' to enable PAM authentication (via # challenge-response) and session processing. Depending on your PAM # configuration, this may bypass the setting of # 'PasswordAuthentication' UsePAM yes If you put "UsePAM no" then password authentication will not work with Linux client either. So you have two choices: PasswordAuthentication no UsePAM no --> Password authentication will not be possible PasswordAuthentication yes UsePAM no/yes --> Password authentication will work with both Windows and Linux clients. Hope this helps you ! Armin -- Am Hasenberg 26 office: Institut für Atmosphärenphysik D-18209 Bad Doberan Schloss-Straße 6 Tel. ++49-(0)38203/42137 D-18225 Kühlungsborn / GERMANY Email: schoech@iap-kborn.de Tel. +49-(0)38293-68-102 WWW: http://armins.cjb.net/ Fax. +49-(0)38293-68-50

Volker Kuhlmann

07:56

New subject: [suse-security] Cannot access SuSE 9.0 through PuTTY

...

I am trying to access my machine at work with PuTTY (the latest version) and I keep obtaining "access denied"... though, I can connect from any machine running Linux... so... what's wrong in this picture? :)

Security got tighter? Check the tcp wrappers settings, perhaps the host isn't allowed to connect. root may not be allowed to login by default. The user you're trying to login as may not be listed as one, or from a host, which is allowed to login - /etc/ssh/sshd.config. HTH, Volker -- Volker Kuhlmann is possibly list0570 with the domain in header http://volker.dnsalias.net/ Please do not CC list postings to me.

Dirk Schreiner

27 Oct 27 Oct

08:34

New subject: [suse-security] Cannot access SuSE 9.0 through PuTTY

This might be a simple charset Problem. Do you use special Characters, such as §$/$%/%&/( ???? Then try out if authentication works after chanching PW to AAA. Just my 2 ct. Dirk Volker Kuhlmann schrieb:

...

...
I am trying to access my machine at work with PuTTY (the latest

version) and I keep obtaining "access denied"... though, I can connect from any machine running Linux... so... what's wrong in this picture? :)

Security got tighter? Check the tcp wrappers settings, perhaps the host isn't allowed to connect. root may not be allowed to login by default. The user you're trying to login as may not be listed as one, or from a host, which is allowed to login - /etc/ssh/sshd.config.

HTH,

Volker

Armin Schoech

12:16

New subject: [suse-security] Cannot access SuSE 9.0 through PuTTY

Hi !

...

This might be a simple charset Problem. Do you use special Characters, such as §$/$%/%&/( ???? Then try out if authentication works after chanching PW to AAA.

--> I don't think this is the problem because it works fine with the Linux client and the same user/password on the remote side. See my first answer for an explanation of how to solve it. Cheers, Armin -- Am Hasenberg 26 office: Institut für Atmosphärenphysik D-18209 Bad Doberan Schloss-Straße 6 Tel. ++49-(0)38203/42137 D-18225 Kühlungsborn / GERMANY Email: schoech@iap-kborn.de Tel. +49-(0)38293-68-102 WWW: http://armins.cjb.net/ Fax. +49-(0)38293-68-50

Markus Gaugusch

25 Oct 25 Oct

14:06

New subject: [suse-security] Cannot access SuSE 9.0 through PuTTY

On Oct 25, Radu Voicu wrote:

...

I am trying to access my machine at work with PuTTY (the latest version) and I keep obtaining "access denied"... though, I can connect from any machine running Linux... so... what's wrong in this picture? :) You have to use an ssh key or enable password authentication in /etc/ssh/sshd_config.

Markus -- __________________ /"\ Markus Gaugusch \ / ASCII Ribbon Campaign markus@gaugusch.at X Against HTML Mail / \

Stefan Seyfried

27 Oct 27 Oct

12:20

New subject: [suse-security] Cannot access SuSE 9.0 through PuTTY

On Sat, Oct 25, 2003 at 10:03:34AM +0300, Radu Voicu wrote:

...

Hi there!

I am trying to access my machine at work with PuTTY (the latest version) and I keep obtaining "access denied"... though, I can connect from any machine running Linux... so... what's wrong in this picture? :)

probably protocol 1 vs protocol 2 regards, Stefan -- Stefan Seyfried Senior Consultant community4you GmbH, Chemnitz, Germany. http://www.community4you.de http://www.open-eis.com

Markus Gaugusch

14:21

New subject: [suse-security] Cannot access SuSE 9.0 through PuTTY

...

On Sat, Oct 25, 2003 at 10:03:34AM +0300, Radu Voicu wrote:

...
Hi there!

I am trying to access my machine at work with PuTTY (the latest version) and I keep obtaining "access denied"... though, I can connect from any machine running Linux... so... what's wrong in this picture? :)

probably protocol 1 vs protocol 2 No, no, no. In this case it is just a new default value - password authentication is disabled on SuSE 9.0. Due to still active pam (keyboard interactive) authentication mechanism, it works from linux clients, but not from windows clients like putty. (I already wrote that some days ago). Please don't post inappropriate guesses if the right answer was already

On Oct 27, Stefan Seyfried wrote: posted. Markus -- __________________ /"\ Markus Gaugusch \ / ASCII Ribbon Campaign markus@gaugusch.at X Against HTML Mail / \

Radu Voicu

14:43

New subject: [suse-security] Cannot access SuSE 9.0 through PuTTY

Markus, I am sorry if I'm offending you in any way, but simply clicking the "Ssh V2" checkbox in PUTTY - does the trick :)) Markus Gaugusch wrote:

...

On Oct 27, Stefan Seyfried wrote:

...
On Sat, Oct 25, 2003 at 10:03:34AM +0300, Radu Voicu wrote:

...
Hi there!

I am trying to access my machine at work with PuTTY (the latest version) and I keep obtaining "access denied"... though, I can connect from any machine running Linux... so... what's wrong in this picture? :)

probably protocol 1 vs protocol 2

No, no, no. In this case it is just a new default value - password authentication is disabled on SuSE 9.0. Due to still active pam (keyboard interactive) authentication mechanism, it works from linux clients, but not from windows clients like putty. (I already wrote that some days ago). Please don't post inappropriate guesses if the right answer was already posted.

Markus

Dirk Schreiner

15:09

New subject: [suse-security] Cannot access SuSE 9.0 through PuTTY

Thanks for telling that the Problem is solved. Dirk Radu Voicu schrieb:

...

Markus, I am sorry if I'm offending you in any way, but simply clicking the "Ssh V2" checkbox in PUTTY - does the trick :))

Markus Gaugusch wrote:

...
On Oct 27, Stefan Seyfried wrote:

...
On Sat, Oct 25, 2003 at 10:03:34AM +0300, Radu Voicu wrote:

...
Hi there!

I am trying to access my machine at work with PuTTY (the latest version) and I keep obtaining "access denied"... though, I can connect from any machine running Linux... so... what's wrong in this picture? :)

probably protocol 1 vs protocol 2

No, no, no. In this case it is just a new default value - password authentication is disabled on SuSE 9.0. Due to still active pam (keyboard interactive) authentication mechanism, it works from linux clients, but not from windows clients like putty. (I already wrote that some days ago). Please don't post inappropriate guesses if the right answer was already posted.

Markus

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participants (6)

Armin Schoech
Dirk Schreiner
Markus Gaugusch
Radu Voicu
Stefan Seyfried
Volker Kuhlmann