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Subject: Re: [libssh2] Compiling and executing error of libssh2 0.14 in Sun Solaris 2.7 and AIX 4.3/5.1

Re: [libssh2] Compiling and executing error of libssh2 0.14 in Sun Solaris 2.7 and AIX 4.3/5.1

From: DAO Anh-Viet <avdao_at_influe.com>
Date: Tue, 20 Mar 2007 15:06:11 +0100

Hi,

I have had the following error in my SSH Server. Have you got any idea ?
I don't know how can I do ?

Br,

debug1: Server will not fork when running in debugging mode.
Connection from aixserver port 32810
debug1: Client protocol version 2.0; client software version libssh2_0.14
debug1: no match: libssh2_0.14
Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-1.99-OpenSSH_3.2.3p1
debug1: list_hostkey_types: ssh-rsa,ssh-dss
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug2: kex_parse_kexinit: diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: ssh-rsa,ssh-dss
debug2: kex_parse_kexinit: aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-cb c,rijndael-cbc_at_lysator.liu.se
debug2: kex_parse_kexinit: aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-cb c,rijndael-cbc_at_lysator.liu.se
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160_at_openssh.com,hmac-sha1-96 ,hmac-md5-96
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160_at_openssh.com,hmac-sha1-96 ,hmac-md5-96
debug2: kex_parse_kexinit: none,zlib
debug2: kex_parse_kexinit: none,zlib
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit: first_kex_follows 0
debug2: kex_parse_kexinit: reserved 0
debug2: kex_parse_kexinit: diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha1,diffie-hel lman-group1-sha1
debug2: kex_parse_kexinit: ssh-rsa,ssh-dss
debug2: kex_parse_kexinit: aes256-cbc,rijndael-cbc_at_lysator.liu.se,aes192-cbc,aes128-cbc,blowfish-cbc ,arcfour,cast128-cbc,3des-cbc,none
debug2: kex_parse_kexinit: aes256-cbc,rijndael-cbc_at_lysator.liu.se,aes192-cbc,aes128-cbc,blowfish-cbc ,arcfour,cast128-cbc,3des-cbc,none
debug2: kex_parse_kexinit: hmac-sha1,hmac-sha1-96,hmac-md5,hmac-md5-96,hmac-ripemd160,hmac-ripemd160 @openssh.com
debug2: kex_parse_kexinit: hmac-sha1,hmac-sha1-96,hmac-md5,hmac-md5-96,hmac-ripemd160,hmac-ripemd160 @openssh.com
debug2: kex_parse_kexinit: none,zlib
debug2: kex_parse_kexinit: none,zlib
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit: first_kex_follows 0
debug2: kex_parse_kexinit: reserved 0
debug2: mac_init: found hmac-sha1
debug1: kex: client->server aes256-cbc hmac-sha1 none
debug2: mac_init: found hmac-sha1
debug1: kex: server->client aes256-cbc hmac-sha1 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST received
debug1: SSH2_MSG_KEX_DH_GEX_GROUP sent
debug1: dh_gen_key: priv key bits set: 255/512
debug1: bits set: 1059/2047
debug1: expecting SSH2_MSG_KEX_DH_GEX_INIT
debug1: bits set: 1/2047
invalid public DH value (1/2047)
Disconnecting: bad client public DH value
debug1: Calling cleanup 0x200364c0(0x0)

Dao Anh-Viet
Développement
INFLUE ILLICOM
Email: avdao_at_influe.com

-----Message d'origine-----
De : Mononen Jussi [mailto:Jussi.Mononen_at_comptel.com]
Envoyé : mardi 20 mars 2007 14:20
À : DAO Anh-Viet; libssh2-devel_at_lists.sourceforge.net
Objet : RE: [libssh2] Compiling and executing error of libssh2 0.14 in Sun Solaris 2.7 and AIX 4.3/5.1

>> [libssh2] Transport: Disconnect(2): bad client public DH value()
>> [libssh2] Failure Event: -9 - Timed out waiting for KEX reply
>> [libssh2] Failure Event: -8 - Unrecoverable error exchanging keys
>> [libssh2] Failure Event: -5 - Unable to exchange encryption keys
>> * Failure establishing ssh session
>>
>> Sending of KEX packet is disconnected due to Timeout of
>> waiting KEX reply.
>> Do you think this problem is due to random device that you
>> said me last time?
>> If not, do you have any idea for this problem ?

Hi,

what does the ssh server say? Run it in debug mode so that you can see
why it does not accept or why it drops your KEX packets.

Something like

/usr/sbin/sshd -ddd -oPort=12345

then connect with your test program to port 12345

br,

/jUSSi

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