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From: Guy Harrison <swampdog AT ntlworld DOT com>
To: cygwin AT cygwin DOT com
Subject: IBM ssh gateway
Date: Wed, 1 Feb 2012 10:46:40 +0000
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Hi Folks,

Can anyone help interpret this? I am fairly certain the problem lies with 
IBM but I am no crypto expert. Is (for instance) the server rejecting the 
connection because (say) it does not understand ECDSA? Unfortunately I do 
not have an older instance of cygwin ssh to try that theory out. The 
failure is recent. I upgraded my cygwin instances over xmas.

My primary concern is that the latter (linux) connection (after ~~~) may 
fail after a future upgrade.

(windows 2003 server 32bit)
$ cygcheck -cd | egrep "ssh|ssl"
libopenssl098                   0.9.8t-1
openssh                         5.9p1-1
openssl                         0.9.8t-1

$ ssh -vvv 198.81.193.10
OpenSSH_5.9p1, OpenSSL 0.9.8t 18 Jan 2012
debug1: Reading configuration data /etc/ssh_config
debug2: ssh_connect: needpriv 0
debug1: Connecting to 198.81.193.104 [198.81.193.104] port 22.
debug1: Connection established.
debug1: identity file /home/Administrator/.ssh/id_rsa type -1
debug1: identity file /home/Administrator/.ssh/id_rsa-cert type -1
debug3: Incorrect RSA1 identifier
debug3: Could not load "/home/Administrator/.ssh/id_dsa" as a RSA1 public 
key
debug1: identity file /home/Administrator/.ssh/id_dsa type 2
debug1: identity file /home/Administrator/.ssh/id_dsa-cert type -1
debug1: identity file /home/Administrator/.ssh/id_ecdsa type -1
debug1: identity file /home/Administrator/.ssh/id_ecdsa-cert type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.2
debug1: match: OpenSSH_5.2 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.9
debug2: fd 3 setting O_NONBLOCK
debug3: load_hostkeys: loading entries for host "198.81.193.104" from 
file "/home/Administrator/.ssh/known_hosts"
debug3: load_hostkeys: loaded 0 keys
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug2: kex_parse_kexinit: 
ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: 
ecdsa-sha2-nistp256-cert-v01 AT openssh DOT com,ecdsa-sha2-nistp384-cert-v01 AT openssh DOT com,ecdsa-sha2-nistp521-cert-v01 AT openssh DOT com,ssh-rsa-cert-v01 AT openssh DOT com,ssh-dss-cert-v01 AT openssh DOT com,ssh-rsa-cert-v00 AT openssh DOT com,ssh-dss-cert-v00 AT openssh DOT com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-rsa,ssh-dss
debug2: kex_parse_kexinit: 
aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc AT lysator DOT liu DOT se
debug2: kex_parse_kexinit: 
aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc AT lysator DOT liu DOT se
debug2: kex_parse_kexinit: 
hmac-md5,hmac-sha1,umac-64 AT openssh DOT com,hmac-sha2-256,hmac-sha2-256-96,hmac-sha2-512,hmac-sha2-512-96,hmac-ripemd160,hmac-ripemd160 AT openssh DOT com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: 
hmac-md5,hmac-sha1,umac-64 AT openssh DOT com,hmac-sha2-256,hmac-sha2-256-96,hmac-sha2-512,hmac-sha2-512-96,hmac-ripemd160,hmac-ripemd160 AT openssh DOT com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,zlib AT openssh DOT com,zlib
debug2: kex_parse_kexinit: none,zlib AT openssh DOT com,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-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: ssh-rsa,ssh-dss
debug2: kex_parse_kexinit: 
aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc AT lysator DOT liu DOT se
debug2: kex_parse_kexinit: 
aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc AT lysator DOT liu DOT se
debug2: kex_parse_kexinit: 
hmac-md5,hmac-sha1,umac-64 AT openssh DOT com,hmac-ripemd160,hmac-ripemd160 AT openssh DOT com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: 
hmac-md5,hmac-sha1,umac-64 AT openssh DOT com,hmac-ripemd160,hmac-ripemd160 AT openssh DOT com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,zlib AT openssh DOT com
debug2: kex_parse_kexinit: none,zlib AT openssh DOT com
debug2: kex_parse_kexinit: 
debug2: kex_parse_kexinit: 
debug2: kex_parse_kexinit: first_kex_follows 0 
debug2: kex_parse_kexinit: reserved 0 
debug2: mac_setup: found hmac-md5
debug1: kex: server->client aes128-ctr hmac-md5 none
debug2: mac_setup: found hmac-md5
debug1: kex: client->server aes128-ctr hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
Read from socket failed: Connection reset by peer

~~~

[admin AT sdvmc32v5 ~]$ cat /etc/redhat-release 
CentOS release 5.7 (Final)
[admin AT sdvmc32v5 ~]$ uname -a
Linux sdvmc32v5 2.6.18-274.17.1.el5 #1 SMP Tue Jan 10 17:26:03 EST 2012 i686 
athlon i386 GNU/Linux

[admin AT sdvmc32v5 ~]$ sudo yum list | egrep "ssl|ssh" | grep installed
openssh.i386                               4.3p2-72.el5_7.5            
installed
openssh-askpass.i386                       4.3p2-72.el5_7.5            
installed
openssh-clients.i386                       4.3p2-72.el5_7.5            
installed
openssh-server.i386                        4.3p2-72.el5_7.5            
installed
openssl.i686                               0.9.8e-20.el5_7.1           
installed
openssl-devel.i386

OpenSSH_4.3p2, OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug2: ssh_connect: needpriv 0
debug1: Connecting to 198.81.193.104 [198.81.193.104] port 22.
debug1: Connection established.
debug1: identity file /home/admin/.ssh/identity type -1
debug1: identity file /home/admin/.ssh/id_rsa type -1
debug3: Not a RSA1 key file /home/admin/.ssh/id_dsa.
debug2: key_type_from_name: unknown key type '-----BEGIN'
debug3: key_read: missing keytype
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug2: key_type_from_name: unknown key type '-----END'
debug3: key_read: missing keytype
debug1: identity file /home/admin/.ssh/id_dsa type 2
debug1: loaded 3 keys
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.2
debug1: match: OpenSSH_5.2 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_4.3
debug2: fd 3 setting O_NONBLOCK
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug2: kex_parse_kexinit: 
diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: ssh-rsa,ssh-dss
debug2: kex_parse_kexinit: 
aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc AT lysator DOT liu DOT se
debug2: kex_parse_kexinit: 
aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc AT lysator DOT liu DOT se
debug2: kex_parse_kexinit: 
hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160 AT openssh DOT com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: 
hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160 AT openssh DOT com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,zlib AT openssh DOT com,zlib
debug2: kex_parse_kexinit: none,zlib AT openssh DOT com,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-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: ssh-rsa,ssh-dss
debug2: kex_parse_kexinit: 
aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc AT lysator DOT liu DOT se
debug2: kex_parse_kexinit: 
aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc AT lysator DOT liu DOT se
debug2: kex_parse_kexinit: 
hmac-md5,hmac-sha1,umac-64 AT openssh DOT com,hmac-ripemd160,hmac-ripemd160 AT openssh DOT com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: 
hmac-md5,hmac-sha1,umac-64 AT openssh DOT com,hmac-ripemd160,hmac-ripemd160 AT openssh DOT com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,zlib AT openssh DOT com
debug2: kex_parse_kexinit: none,zlib AT openssh DOT com
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-md5
debug1: kex: server->client aes128-ctr hmac-md5 none
debug2: mac_init: found hmac-md5
debug1: kex: client->server aes128-ctr hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug2: dh_gen_key: priv key bits set: 120/256
debug2: bits set: 470/1024
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug3: check_host_in_hostfile: filename /home/admin/.ssh/known_hosts
debug3: check_host_in_hostfile: match line 4
debug1: Host '198.81.193.104' is known and matches the RSA host key.
debug1: Found key in /home/admin/.ssh/known_hosts:4
debug2: bits set: 520/1024
debug1: ssh_rsa_verify: signature correct
debug2: kex_derive_keys
debug2: set_newkeys: mode 1
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug2: set_newkeys: mode 0
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug2: key: /home/admin/.ssh/identity ((nil))
debug2: key: /home/admin/.ssh/id_rsa ((nil))
debug2: key: /home/admin/.ssh/id_dsa (0x8f62490)
debug1: Authentications that can continue: 
publickey,password,keyboard-interactive
debug3: start over, passed a different list 
publickey,password,keyboard-interactive
debug3: preferred gssapi-with-mic,publickey,keyboard-interactive,password
debug3: authmethod_lookup publickey
debug3: remaining preferred: keyboard-interactive,password
debug3: authmethod_is_enabled publickey
debug1: Next authentication method: publickey
debug1: Trying private key: /home/admin/.ssh/identity
debug3: no such identity: /home/admin/.ssh/identity
debug1: Trying private key: /home/admin/.ssh/id_rsa
debug3: no such identity: /home/admin/.ssh/id_rsa
debug1: Offering public key: /home/admin/.ssh/id_dsa
debug3: send_pubkey_test
debug2: we sent a publickey packet, wait for reply
debug1: Authentications that can continue: 
publickey,password,keyboard-interactive
debug2: we did not send a packet, disable method
debug3: authmethod_lookup keyboard-interactive
debug3: remaining preferred: password
debug3: authmethod_is_enabled keyboard-interactive
debug1: Next authentication method: keyboard-interactive
debug2: userauth_kbdint
debug2: we sent a keyboard-interactive packet, wait for reply
debug1: Authentications that can continue: 
publickey,password,keyboard-interactive
debug3: userauth_kbdint: disable: no info_req_seen
debug2: we did not send a packet, disable method
debug3: authmethod_lookup password
debug3: remaining preferred: 
debug3: authmethod_is_enabled password
debug1: Next authentication method: password
admin AT 198 DOT 81 DOT 193 DOT 104's password:

TIA
Guy

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