[resolved] sshd mit Pubkey - private key wird abgelehnt

[DonTermi]

Hallöchen,

ich habe gerade auf unserem Webserver (Linux) sshd geconft und wollte nun das selbe mit unserem Router (OpenBSD 4.2) machen. Leider funktioniert da ssh per pubkey überhaupt nicht. Die Schlüssel sind soweit okay, weil diese unter Linux ssh problemlos funktionieren.

Hier mal das -ddd vom sshd. Vielleicht lest ihr mehr heraus als ich:

debug2: load_server_config: filename /etc/ssh/sshd_config

debug2: load_server_config: done config len = 631

debug2: parse_server_config: config /etc/ssh/sshd_config len 631

debug3: /etc/ssh/sshd_config:11 setting Port 22

debug3: /etc/ssh/sshd_config:20 setting Protocol 2

debug3: /etc/ssh/sshd_config:25 setting HostKey /etc/ssh/ssh_host_rsa_key

debug3: /etc/ssh/sshd_config:26 setting HostKey /etc/ssh/ssh_host_dsa_key

debug3: /etc/ssh/sshd_config:27 setting UsePrivilegeSeparation yes

debug3: /etc/ssh/sshd_config:30 setting KeyRegenerationInterval 1h

debug3: /etc/ssh/sshd_config:31 setting ServerKeyBits 768

debug3: /etc/ssh/sshd_config:35 setting SyslogFacility AUTH

debug3: /etc/ssh/sshd_config:36 setting LogLevel INFO

debug3: /etc/ssh/sshd_config:39 setting LoginGraceTime 60

debug3: /etc/ssh/sshd_config:40 setting PermitRootLogin no

debug3: /etc/ssh/sshd_config:41 setting StrictModes yes

debug3: /etc/ssh/sshd_config:44 setting RSAAuthentication yes

debug3: /etc/ssh/sshd_config:45 setting PubkeyAuthentication yes

debug3: /etc/ssh/sshd_config:46 setting AuthorizedKeysFile %h/.ssh/authorized_keys

debug3: /etc/ssh/sshd_config:49 setting RhostsRSAAuthentication no

debug3: /etc/ssh/sshd_config:51 setting HostbasedAuthentication no

debug3: /etc/ssh/sshd_config:56 setting IgnoreRhosts yes

debug3: /etc/ssh/sshd_config:59 setting PasswordAuthentication no

debug3: /etc/ssh/sshd_config:60 setting PermitEmptyPasswords no

debug3: /etc/ssh/sshd_config:63 setting ChallengeResponseAuthentication no

debug3: /etc/ssh/sshd_config:77 setting X11Forwarding no

debug3: /etc/ssh/sshd_config:98 setting Subsystem sftp  /usr/libexec/sftp-server

debug1: sshd version OpenSSH_4.7

debug3: Not a RSA1 key file /etc/ssh/ssh_host_rsa_key.

debug1: read PEM private key done: type RSA

debug1: private host key: #0 type 1 RSA

debug3: Not a RSA1 key file /etc/ssh/ssh_host_dsa_key.

debug1: read PEM private key done: type DSA

debug1: private host key: #1 type 2 DSA

debug1: rexec_argv[0]='/usr/sbin/sshd'

debug1: rexec_argv[1]='-ddd'

debug2: fd 4 setting O_NONBLOCK

debug1: Bind to port 22 on ::.

Server listening on :: port 22.

debug2: fd 5 setting O_NONBLOCK

debug1: Bind to port 22 on 0.0.0.0.

Server listening on 0.0.0.0 port 22.

debug1: fd 6 clearing O_NONBLOCK

debug1: Server will not fork when running in debugging mode.

debug3: send_rexec_state: entering fd = 9 config len 631

debug3: ssh_msg_send: type 0

debug3: send_rexec_state: done

debug1: rexec start in 6 out 6 newsock 6 pipe -1 sock 9

debug1: inetd sockets after dupping: 4, 4

Connection from 192.168.1.102 port 47919

debug1: Client protocol version 2.0; client software version OpenSSH_4.7p1 Debian-2

debug1: match: OpenSSH_4.7p1 Debian-2 pat OpenSSH*

debug1: Enabling compatibility mode for protocol 2.0

debug1: Local version string SSH-2.0-OpenSSH_4.7

debug2: fd 4 setting O_NONBLOCK

debug2: Network child is on pid 13262

debug3: privsep user:group 27:27

debug3: preauth child monitor started

debug1: permanently_set_uid: 27/27

debug3: mm_request_receive entering

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-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-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour128,arcfour256,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc@lysator.liu.se,aes128-ctr,aes192-ctr,aes256-ctr

debug2: kex_parse_kexinit: aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour128,arcfour256,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc@lysator.liu.se,aes128-ctr,aes192-ctr,aes256-ctr

debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96

debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96

debug2: kex_parse_kexinit: none,zlib@openssh.com

debug2: kex_parse_kexinit: none,zlib@openssh.com

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-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour128,arcfour256,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc@lysator.liu.se,aes128-ctr,aes192-ctr,aes256-ctr

debug2: kex_parse_kexinit: aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour128,arcfour256,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc@lysator.liu.se,aes128-ctr,aes192-ctr,aes256-ctr

debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96

debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96

debug2: kex_parse_kexinit: none,zlib@openssh.com,zlib

debug2: kex_parse_kexinit: none,zlib@openssh.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: mac_setup: found hmac-md5

debug1: kex: client->server aes128-cbc hmac-md5 none

debug2: mac_setup: found hmac-md5

debug1: kex: server->client aes128-cbc hmac-md5 none

debug1: SSH2_MSG_KEX_DH_GEX_REQUEST received

debug3: mm_request_send entering: type 0

debug3: monitor_read: checking request 0

debug3: mm_choose_dh: waiting for MONITOR_ANS_MODULI

debug3: mm_answer_moduli: got parameters: 1024 1024 8192

debug3: mm_request_receive_expect entering: type 1

debug3: mm_request_receive entering

debug3: mm_request_send entering: type 1

debug3: mm_choose_dh: remaining 0

debug2: monitor_read: 0 used once, disabling now

debug1: SSH2_MSG_KEX_DH_GEX_GROUP sent

debug3: mm_request_receive entering

debug2: dh_gen_key: priv key bits set: 115/256

debug2: bits set: 505/1024

debug1: expecting SSH2_MSG_KEX_DH_GEX_INIT

debug2: bits set: 505/1024

debug3: mm_key_sign entering

debug3: mm_request_send entering: type 4

debug3: monitor_read: checking request 4

debug3: mm_key_sign: waiting for MONITOR_ANS_SIGN

debug3: mm_answer_sign

debug3: mm_request_receive_expect entering: type 5

debug3: mm_answer_sign: signature 0x80827a00(271)

debug3: mm_request_receive entering

debug3: mm_request_send entering: type 5

debug1: SSH2_MSG_KEX_DH_GEX_REPLY sent

debug2: monitor_read: 4 used once, disabling now

debug2: kex_derive_keys

debug3: mm_request_receive entering

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: KEX done

debug1: userauth-request for user xxxxxxxx service ssh-connection method none

debug1: attempt 0 failures 0

debug3: mm_getpwnamallow entering

debug3: mm_request_send entering: type 6

debug3: monitor_read: checking request 6

debug3: mm_getpwnamallow: waiting for MONITOR_ANS_PWNAM

debug3: mm_answer_pwnamallow

debug3: mm_request_receive_expect entering: type 7

debug3: Trying to reverse map address 192.168.1.102.

debug3: mm_request_receive entering

debug2: parse_server_config: config reprocess config len 631

debug3: mm_answer_pwnamallow: sending MONITOR_ANS_PWNAM: 1

debug3: mm_request_send entering: type 7

debug2: monitor_read: 6 used once, disabling now

debug2: input_userauth_request: setting up authctxt for xxxxxxxx

debug3: mm_request_receive entering

debug3: mm_inform_authserv entering

debug3: mm_request_send entering: type 3

debug3: monitor_read: checking request 3

debug2: input_userauth_request: try method none

debug3: mm_answer_authserv: service=ssh-connection, style=

debug2: monitor_read: 3 used once, disabling now

debug3: mm_request_receive entering

debug1: userauth-request for user xxxxxxxx service ssh-connection method publickey

debug1: attempt 1 failures 1

debug2: input_userauth_request: try method publickey

debug3: mm_key_allowed entering

debug3: mm_request_send entering: type 20

debug3: monitor_read: checking request 20

debug3: mm_key_allowed: waiting for MONITOR_ANS_KEYALLOWED

debug3: mm_answer_keyallowed entering

debug3: mm_request_receive_expect entering: type 21

debug3: mm_answer_keyallowed: key_from_blob: 0x7f5c37f0

debug3: mm_request_receive entering

debug1: temporarily_use_uid: 1001/1001 (e=0/0)

debug1: trying public key file /home/xxxxxxxx/.ssh/authorized_keys

debug1: restore_uid: 0/0

debug1: temporarily_use_uid: 1001/1001 (e=0/0)

debug1: trying public key file /home/xxxxxxxx/.ssh/authorized_keys

debug1: restore_uid: 0/0

Failed publickey for xxxxxxxx from 192.168.1.102 port 47919 ssh2

debug3: mm_answer_keyallowed: key 0x7f5c37f0 is disallowed

debug3: mm_request_send entering: type 21

debug2: userauth_pubkey: authenticated 0 pkalg ssh-rsa

debug3: mm_request_receive entering

Connection closed by 192.168.1.102

debug1: do_cleanup

debug1: do_cleanup

#

Werd einfach nicht schlau draus.

Das Schlüsselpaar wurde per

ssh-keygen -t rsa -b 4096 -f router

erzeugt.


Und hier der Verbose Output vom ssh login

ssh -v -i router xxxxxx@router.intranet
OpenSSH_4.7p1 Debian-2, OpenSSL 0.9.8g 19 Oct 2007
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug1: Connecting to router.intranet [192.168.1.1] port 22.
debug1: Connection established.
debug1: identity file router type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_4.7
debug1: match: OpenSSH_4.7 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_4.7p1 Debian-2
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-cbc hmac-md5 none
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
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug1: Host 'router.intranet' is known and matches the RSA host key.
debug1: Found key in /home/xxxxxxxx/.ssh/known_hosts:12
debug1: ssh_rsa_verify: signature correct
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Trying private key: router
debug1: PEM_read_PrivateKey failed
debug1: read PEM private key done: type <unknown>
Enter passphrase for key 'router': 
debug1: read PEM private key done: type RSA
debug1: Authentications that can continue: publickey
debug1: No more authentication methods to try.
Permission denied (publickey).

 

[DonTermi]

Kann ja auch nicht gehen wenn auf der Serverseite das .ssh Dir nen Recht 0600 hat statt 0700. Mich nur die ganze Zeit auf das authorized_keys File konzentriert.