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Date: Sat, 15 Nov 2008 10:57:29 +0000
From: "tyrone donnelly" <tyrone DOT donnelly AT gmail DOT com>
To: cygwin AT cygwin DOT com
Subject: Password authentication keeps kicking in on SSH client connection attempt.
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Hi,

The password authentication keeps kicking in on SSH client connection attempt.

I know this question has been asked a zillion times. It seems that
each problem becomes unique to specific builds,
or new releases. I hope this is a simple solution, even if I feel dumb
afterwards, I will learn and pass the information on :)

I am currently running a Windows virtual 2003 64 bit server.

I have installed the latest version of cygwin, as of today, and
successfully connected to my own hostname over ssh using
a public ssh rsa type2 key, after a hell of a headache I might add.

I have checked the permissions on my home and /.ssh directories on
both host and client but could use some advice on these
(please see below)

CLIENT

$ ls -ld $HOME
drwx------+ 17 SYSTEM SYSTEM 0 Nov 14 15:46 /cygdrive/c (THIS APPEARS
TO BE MY C:)

$ ls -l /.ssh
total 6
-rw--w--w- 1 DonnellT Users  403 Nov 14 13:56 authorized_keys (THIS IS
A DOMAIN USER AND DOESNT APPEAR IN THE PASSWD FILE LOCALLY)
-rw--w--w- 1 DonnellT Users 1675 Nov 14 13:56 id_rsa
-rw--w--w- 1 DonnellT Users  403 Nov 14 13:56 id_rsa.pub

$ ls -ld /.ssh
drw-------+ 2 DonnellT Users 0 Nov 14 15:59 /.ssh

SERVER

$ ls -ld $HOME
drwx------+ 3 Administrator None 0 Nov 14 13:01 /home/Administrator

$ ls -l /home/Administrator/.ssh
total 6
-rw------- 1 Administrator None  810 Nov 14 16:58 authorized_keys
-rw------- 1 Administrator None 1675 Nov 14 11:58 id_rsa
-rw------- 1 Administrator None  405 Nov 14 11:58 id_rsa.pub
-rw-r--r-- 1 Administrator None  406 Nov 14 13:01 known_hosts

$ ls -dl /home/Administrator/.ssh
drw-------+ 2 Administrator None 0 Nov 14 17:15 /home/Administrator/.ssh

Are these permissions ok?

On the connection attempt the following debug log appears before
hitting the password prompt.

$ ssh -vvv 87.106.100.218
OpenSSH_5.1p1, OpenSSL 0.9.8i 15 Sep 2008
debug2: ssh_connect: needpriv 0
debug1: Connecting to 87.106.100.218 [87.106.100.218] port 22.
debug1: Connection established.
debug1: identity file /cygdrive/c/.ssh/identity type -1
debug1: identity file /cygdrive/c/.ssh/id_rsa type -1
debug1: identity file /cygdrive/c/.ssh/id_dsa type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.1
debug1: match: OpenSSH_5.1 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.1
debug2: fd 3 setting O_NONBLOCK
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug2: kex_parse_kexinit: diffie-hellman-group-exchange-sha256,diffie-hellman-g
roup-exchange-sha1,diffie-hellman-group14-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,arcfour1
28,arcfour256,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc AT lysator DOT liu DOT se,aes128-c
tr,aes192-ctr,aes256-ctr
debug2: kex_parse_kexinit: aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour1
28,arcfour256,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc AT lysator DOT liu DOT se,aes128-c
tr,aes192-ctr,aes256-ctr
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,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-g
roup-exchange-sha1,diffie-hellman-group14-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,arcfour1
28,arcfour256,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc AT lysator DOT liu DOT se,aes128-c
tr,aes192-ctr,aes256-ctr
debug2: kex_parse_kexinit: aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour1
28,arcfour256,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc AT lysator DOT liu DOT se,aes128-c
tr,aes192-ctr,aes256-ctr
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-cbc hmac-md5 none
debug2: mac_setup: found hmac-md5
debug1: kex: client->server aes128-cbc 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: 126/256
debug2: bits set: 527/1024
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug3: check_host_in_hostfile: filename /cygdrive/c/.ssh/known_hosts
debug3: check_host_in_hostfile: match line 1
debug1: Host '87.106.100.218' is known and matches the RSA host key.
debug1: Found key in /cygdrive/c/.ssh/known_hosts:1
debug2: bits set: 475/1024
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: /cygdrive/c/.ssh/identity (0x0)
debug2: key: /cygdrive/c/.ssh/id_rsa (0x0)
debug2: key: /cygdrive/c/.ssh/id_dsa (0x0)
debug1: Authentications that can continue: publickey,password,keyboard-interacti
ve
debug3: start over, passed a different list publickey,password,keyboard-interact
ive
debug3: preferred 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: /cygdrive/c/.ssh/identity
debug3: no such identity: /cygdrive/c/.ssh/identity
debug1: Trying private key: /cygdrive/c/.ssh/id_rsa
debug3: no such identity: /cygdrive/c/.ssh/id_rsa
debug1: Trying private key: /cygdrive/c/.ssh/id_dsa
debug3: no such identity: /cygdrive/c/.ssh/id_dsa
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-interacti
ve
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
Username AT xxx DOT xxx DOT xxx's password:


The only thing I can think the problem would be is permissions, but no
matter what I try it still doesn't work :(

Does anyone have any ideas please? I really have tried everything in my power.

Thanks :)

Tyrone

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