From o.shneyder@phoca-gmbh.de  Mon Oct 13 15:51:03 2014
Received: (at 472) by bugs.x2go.org; 13 Oct 2014 13:51:04 +0000
X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on
	ymir.das-netzwerkteam.de
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,URIBL_BLOCKED
	autolearn=ham version=3.3.2
X-Greylist: delayed 1005 seconds by postgrey-1.34 at ymir.das-netzwerkteam.de; Mon, 13 Oct 2014 15:51:02 CEST
Received: from mail.cowic.de (mx1.cowic.de [80.190.97.241])
	by ymir.das-netzwerkteam.de (Postfix) with ESMTP id D7A8D5E09F
	for <472@bugs.x2go.org>; Mon, 13 Oct 2014 15:51:02 +0200 (CEST)
Received: from [192.168.0.108] (ipbcc2257c.dynamic.kabel-deutschland.de [188.194.37.124])
	by mail.cowic.de (Postfix) with ESMTP id 47888380D6DC;
	Mon, 13 Oct 2014 15:34:17 +0200 (CEST)
Message-ID: <543BD4D8.5060309@phoca-gmbh.de>
Date: Mon, 13 Oct 2014 15:34:16 +0200
From: Oleksandr Shneyder <o.shneyder@phoca-gmbh.de>
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Icedove/24.5.0
MIME-Version: 1.0
To: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>, 
 Alex DEKKER <bugs@ale.cx>,
 472@bugs.x2go.org
CC: o.schneyder@phoca-gmbh.de
Subject: Re: [X2Go-Dev] Bug#472: Debian now has diffie-hellman-group1-sha1
 disabled
References: <20141011204801.Horde.PMP6WPnVUe8IpbJWVualAQ4@mail.das-netzwerkteam.de>
In-Reply-To: <20141011204801.Horde.PMP6WPnVUe8IpbJWVualAQ4@mail.das-netzwerkteam.de>
Content-Type: multipart/signed; micalg=pgp-sha1;
 protocol="application/pgp-signature";
 boundary="FUf01UlC5Bof2n0nVk71Vc0WqPRLNpRhh"

This is an OpenPGP/MIME signed message (RFC 4880 and 3156)
--FUf01UlC5Bof2n0nVk71Vc0WqPRLNpRhh
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

And why is it a problem for X2Go? Is libssh not working any more? Then
it should be fixed in libssh, not in x2go?

Am 11.10.2014 22:48, schrieb Mike Gabriel:
> Control: severity -1 important
>=20
> HI Alex (DEKKER), hi Alex (Schneyder),
>=20
> On  Sa 11 Okt 2014 13:07:00 CEST, Alex DEKKER wrote:
>=20
>> As of Version: 1:6.7p1-1 of openssh-server, it appears that Debian
>> [and presumably upstream]'s sshd now has diffie-hellman-group1-sha1
>> disabled. This means that connections from x2goclient will fail.
>>
>> I was able to work around this by adding:
>>
>> KexAlgorithms
>> curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecd=
h-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group=
14-sha1,diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1
>>
>>
>> to /etc/ssh/sshd_config, but obviously at some point support for
>> diffie-hellman-group1-sha1 is going to go away completely, rather than=

>> just being disabled by default.
>=20
> Thanks for bringing this up. Did not realize so far.
>=20
> @Alex Schneyder: do you think you can find a fix for this. This actuall=
y
> is a release blocker of 4.0.3.0... And it endangers the status of X2Go
> Client in Debian, as well.
>=20
> Mike
>=20
>=20


--=20
-----------------------------------------------------------
Oleksandr Shneyder        | Email: o.shneyder@phoca-gmbh.de
phoca GmbH                | Tel. : 0911 - 14870374 0
Ludwig-Feuerbach-str. 18  | Fax. : 0911 - 14870374 9
D-90489 N=FCrnberg          | Mobil: 0163 - 49 64 461

Gesch=E4ftsf=FChrung:
Dipl.-Inf. Oleksandr Shneyder

Amtsgericht M=FCnchen | http://www.phoca-gmbh.de
HRB 196 658         | http://www.x2go.org
USt-IdNr.: DE281977973
-----------------------------------------------------------


--FUf01UlC5Bof2n0nVk71Vc0WqPRLNpRhh
Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: OpenPGP digital signature
Content-Disposition: attachment; filename="signature.asc"

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1

iEYEARECAAYFAlQ71NkACgkQxQmEC5b4kTNQ6wCfcuPm1sgIwYVXZqCT9/JNVQkd
0AQAniyfBz3zZ4DobpP37kD5+VOL9NgP
=FQhI
-----END PGP SIGNATURE-----

--FUf01UlC5Bof2n0nVk71Vc0WqPRLNpRhh--