我最近从优胜美地将我公司的Mac Mini设备升级到El Capitan，并在升级过程中遇到了几个问题。 我已经解决了他们中的大部分，但仍然失败的是SSH连接。 该机器能够SSH到其他设备，但它能够接收传入的SSHD连接似乎被部分破坏。 密码authentication不再在机器上运行。 我已经多次确认用户名和密码是正确的。 我可以在本地login，没有任何问题相同的凭据。 我认为这与sshd_config中的UsePAM设置有关，因为当我closures这个function时，公共密钥authentication开始工作，但是当它打开的时候它不会。
但是，在这两种情况下，密码validation都会在100％的时间内失败。 我已经尝试将Mac上的OpenSSH版本升级到7.1p2，但是这完全破坏了公钥authentication，密码仍然失败。 Mac版本仍然是6.9，因为这是唯一可以访问系统的版本。 我包括我能想到的所有日志输出，但我完全损失。
sshd_config中：
# $OpenBSD: sshd_config,v 1.89 2013/02/06 00:20:42 dtucker Exp $ # This is the sshd server system-wide configuration file. See # sshd_config(5) for more information. # This sshd was compiled with PATH=/usr/bin:/bin:/usr/sbin:/sbin # The strategy used for options in the default sshd_config shipped with # OpenSSH is to specify options with their default value where # possible, but leave them commented. Uncommented options override the # default value. # See sshd_config(5) for details on setting the Port and Listen values on Mac OS X #Port 22 #AddressFamily any #ListenAddress 0.0.0.0 #ListenAddress :: # The default requires explicit activation of protocol 1 #Protocol 2 # HostKey for protocol version 1 #HostKey /etc/ssh/ssh_host_key # HostKeys for protocol version 2 #HostKey /etc/ssh/ssh_host_rsa_key #HostKey /etc/ssh/ssh_host_dsa_key #HostKey /etc/ssh/ssh_host_ecdsa_key # Lifetime and size of ephemeral version 1 server key #KeyRegenerationInterval 1h #ServerKeyBits 1024 # Logging # obsoletes QuietMode and FascistLogging SyslogFacility AUTHPRIV #LogLevel INFO # Authentication: #LoginGraceTime 2m #PermitRootLogin yes #noStrictModes yes #MaxAuthTries 6 #MaxSessions 10 RSAAuthentication yes PubkeyAuthentication yes # The default is to check both .ssh/authorized_keys and .ssh/authorized_keys2 # but this is overridden so installations will only check .ssh/authorized_keys AuthorizedKeysFile .ssh/authorized_keys #AuthorizedPrincipalsFile none #AuthorizedKeysCommand none #AuthorizedKeysCommandUser nobody # For this to work you will also need host keys in /etc/ssh/ssh_known_hosts #RhostsRSAAuthentication no # similar for protocol version 2 #HostbasedAuthentication no # Change to yes if you don't trust ~/.ssh/known_hosts for # RhostsRSAAuthentication and HostbasedAuthentication #IgnoreUserKnownHosts no # Don't read the user's ~/.rhosts and ~/.shosts files #IgnoreRhosts yes # To disable tunneled clear text passwords both PasswordAuthentication and # ChallengeResponseAuthentication must be set to "no". PasswordAuthentication yes #PermitEmptyPasswords no # Change to no to disable s/key passwords ChallengeResponseAuthentication yes # Kerberos options #KerberosAuthentication no #KerberosOrLocalPasswd yes #KerberosTicketCleanup yes # GSSAPI options #GSSAPIAuthentication no #GSSAPICleanupCredentials yes #GSSAPIStrictAcceptorCheck yes #GSSAPIKeyExchange no # Set this to 'yes' to enable PAM authentication, account processing, # and session processing. If this is enabled, PAM authentication will # be allowed through the ChallengeResponseAuthentication and # PasswordAuthentication. Depending on your PAM configuration, # PAM authentication via ChallengeResponseAuthentication may bypass # the setting of "PermitRootLogin without-password". # If you just want the PAM account and session checks to run without # PAM authentication, then enable this but set PasswordAuthentication # and ChallengeResponseAuthentication to 'no'. # Also, PAM will deny null passwords by default. If you need to allow # null passwords, add the " nullok" option to the end of the # securityserver.so line in /etc/pam.d/sshd. UsePAM no #AllowAgentForwarding yes #AllowTcpForwarding yes #GatewayPorts no X11Forwarding yes #XauthLocation xauth # Default is to search $PATH (set by launchd(8)). It is recommended that a full path be provided. #X11DisplayOffset 10 #X11UseLocalhost yes #PrintMotd yes #PrintLastLog yes #TCPKeepAlive yes #UseLogin no UsePrivilegeSeparation sandbox # Default for new installations. #PermitUserEnvironment no #Compression delayed #ClientAliveInterval 0 #ClientAliveCountMax 3 #UseDNS no #PidFile /var/run/sshd.pid #MaxStartups 10:30:100 #PermitTunnel no #ChrootDirectory none #VersionAddendum none # pass locale information AcceptEnv LANG LC_* # no default banner path #Banner none # override default of no subsystems Subsystem sftp /usr/libexec/sftp-server # Example of overriding settings on a per-user basis #Match User anoncvs # X11Forwarding no # AllowTcpForwarding no # ForceCommand cvs server # XAuthLocation added by XQuartz (http://xquartz.macosforge.org) XAuthLocation /opt/X11/bin/xauth LogLevel DEBUG3 密码authentication（传入）：
OpenSSH_7.1p2, OpenSSL 1.0.2f 28 Jan 2016 debug1: Reading configuration data /usr/local/etc/ssh/ssh_config debug2: ssh_connect: needpriv 0 debug1: Connecting to 192.168.1.113 [192.168.1.113] port 22. debug1: Connection established. debug1: identity file /Users/user_name/.ssh/id_rsa type 1 debug1: key_load_public: No such file or directory debug1: identity file /Users/user_name/.ssh/id_rsa-cert type -1 debug1: key_load_public: No such file or directory debug1: identity file /Users/user_name/.ssh/id_dsa type -1 debug1: key_load_public: No such file or directory debug1: identity file /Users/user_name/.ssh/id_dsa-cert type -1 debug1: key_load_public: No such file or directory debug1: identity file /Users/user_name/.ssh/id_ecdsa type -1 debug1: key_load_public: No such file or directory debug1: identity file /Users/user_name/.ssh/id_ecdsa-cert type -1 debug1: key_load_public: No such file or directory debug1: identity file /Users/user_name/.ssh/id_ed25519 type -1 debug1: key_load_public: No such file or directory debug1: identity file /Users/user_name/.ssh/id_ed25519-cert type -1 debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_7.1 debug1: Remote protocol version 2.0, remote software version OpenSSH_6.9 debug1: match: OpenSSH_6.9 pat OpenSSH* compat 0x04000000 debug2: fd 3 setting O_NONBLOCK debug1: Authenticating to 192.168.1.113:22 as 'user' debug3: hostkeys_foreach: reading file "/Users/user_name/.ssh/known_hosts" debug3: record_hostkey: found key type ECDSA in file /Users/user_name/.ssh/known_hosts:2 debug3: load_hostkeys: loaded 1 keys from 192.168.1.113 debug3: order_hostkeyalgs: prefer hostkeyalgs: [email protected],[email protected],[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug2: kex_parse_kexinit: [email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1 debug2: kex_parse_kexinit: [email protected],[email protected],[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,[email protected],[email protected],ssh-ed25519,ssh-rsa debug2: kex_parse_kexinit: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected],arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[email protected] debug2: kex_parse_kexinit: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected],arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[email protected] debug2: kex_parse_kexinit: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1,[email protected],[email protected],[email protected],[email protected],hmac-md5,hmac-ripemd160,[email protected],hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1,[email protected],[email protected],[email protected],[email protected],hmac-md5,hmac-ripemd160,[email protected],hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: none,[email protected],zlib debug2: kex_parse_kexinit: none,[email protected],zlib debug2: kex_parse_kexinit: debug2: kex_parse_kexinit: debug2: first_kex_follows 0 debug2: reserved 0 debug2: kex_parse_kexinit: [email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1 debug2: kex_parse_kexinit: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256,ssh-ed25519 debug2: kex_parse_kexinit: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected] debug2: kex_parse_kexinit: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected] debug2: kex_parse_kexinit: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1 debug2: kex_parse_kexinit: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1 debug2: kex_parse_kexinit: none,[email protected] debug2: kex_parse_kexinit: none,[email protected] debug2: kex_parse_kexinit: debug2: kex_parse_kexinit: debug2: first_kex_follows 0 debug2: reserved 0 debug1: kex: server->client [email protected] <implicit> none debug1: kex: client->server [email protected] <implicit> none debug1: expecting SSH2_MSG_KEX_ECDH_REPLY debug1: Server host key: ecdsa-sha2-nistp256 SHA256:R6FEOBAUOfi7AtDpRTFtCH3dRlZS06Z+idRfwFOJXjo debug3: hostkeys_foreach: reading file "/Users/user_name/.ssh/known_hosts" debug3: record_hostkey: found key type ECDSA in file /Users/user_name/.ssh/known_hosts:2 debug3: load_hostkeys: loaded 1 keys from 192.168.1.113 debug1: Host '192.168.1.113' is known and matches the ECDSA host key. debug1: Found key in /Users/user_name/.ssh/known_hosts:2 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: /Users/user_name/.ssh/id_rsa (0x7fc183d01c00), debug2: key: /Users/user_name/.ssh/id_dsa (0x0), debug2: key: /Users/user_name/.ssh/id_ecdsa (0x0), debug2: key: /Users/user_name/.ssh/id_ed25519 (0x0), debug1: Authentications that can continue: publickey,password,keyboard-interactive debug3: start over, passed a different list publickey,password,keyboard-interactive 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: Offering RSA public key: /Users/user_name/.ssh/id_rsa debug3: send_pubkey_test debug2: we sent a publickey packet, wait for reply debug1: Authentications that can continue: publickey,password,keyboard-interactive debug1: Trying private key: /Users/user_name/.ssh/id_dsa debug3: no such identity: /Users/user_name/.ssh/id_dsa: No such file or directory debug1: Trying private key: /Users/user_name/.ssh/id_ecdsa debug3: no such identity: /Users/user_name/.ssh/id_ecdsa: No such file or directory debug1: Trying private key: /Users/user_name/.ssh/id_ed25519 debug3: no such identity: /Users/user_name/.ssh/id_ed25519: No such file or directory 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 [email protected]'s password: debug3: Received SSH2_MSG_IGNORE debug3: Received SSH2_MSG_IGNORE debug3: Received SSH2_MSG_IGNORE debug3: Received SSH2_MSG_IGNORE debug3: Received SSH2_MSG_IGNORE debug3: Received SSH2_MSG_IGNORE debug3: Received SSH2_MSG_IGNORE debug3: Received SSH2_MSG_IGNORE debug3: Received SSH2_MSG_IGNORE debug3: Received SSH2_MSG_IGNORE debug2: we sent a password packet, wait for reply debug1: Authentications that can continue: publickey,password,keyboard-interactive Permission denied, please try again.
密码authentication（system.log）：
Feb 10 11:45:34 Mac-mini launchproxy[95917]: Failed password for user from 192.168.1.111 port 57834 ssh2 Feb 10 11:45:35 Mac-mini launchproxy[95917]: Connection closed by 192.168.1.111 [preauth]
到Mac的Pubkey身份validation – UsePAM = yes：
OpenSSH_7.1p1, OpenSSL 1.0.2e 3 Dec 2015 debug2: ssh_connect: needpriv 0 debug1: Connecting to 192.168.1.113 [192.168.1.113] port 22. debug1: Connection established. debug1: identity file /home/user/.ssh/id_rsa type 1 debug1: key_load_public: No such file or directory debug1: identity file /home/user/.ssh/id_rsa-cert type -1 debug1: key_load_public: No such file or directory debug1: identity file /home/user/.ssh/id_dsa type -1 debug1: key_load_public: No such file or directory debug1: identity file /home/user/.ssh/id_dsa-cert type -1 debug1: key_load_public: No such file or directory debug1: identity file /home/user/.ssh/id_ecdsa type -1 debug1: key_load_public: No such file or directory debug1: identity file /home/user/.ssh/id_ecdsa-cert type -1 debug1: key_load_public: No such file or directory debug1: identity file /home/user/.ssh/id_ed25519 type -1 debug1: key_load_public: No such file or directory debug1: identity file /home/user/.ssh/id_ed25519-cert type -1 debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_7.1 debug1: Remote protocol version 2.0, remote software version OpenSSH_6.9 debug1: match: OpenSSH_6.9 pat OpenSSH* compat 0x04000000 debug2: fd 3 setting O_NONBLOCK debug1: Authenticating to 192.168.1.113:22 as 'user_name' debug3: hostkeys_foreach: reading file "/home/user/.ssh/known_hosts" debug3: record_hostkey: found key type ECDSA in file /home/user/.ssh/known_hosts:1 debug3: load_hostkeys: loaded 1 keys from 192.168.1.113 debug3: order_hostkeyalgs: prefer hostkeyalgs: [email protected],[email protected],[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug2: kex_parse_kexinit: [email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1 debug2: kex_parse_kexinit: [email protected],[email protected],[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,[email protected],[email protected],ssh-ed25519,ssh-rsa debug2: kex_parse_kexinit: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected],arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[email protected] debug2: kex_parse_kexinit: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected],arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[email protected] debug2: kex_parse_kexinit: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1,[email protected],[email protected],[email protected],[email protected],hmac-md5,hmac-ripemd160,[email protected],hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1,[email protected],[email protected],[email protected],[email protected],hmac-md5,hmac-ripemd160,[email protected],hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: none,[email protected],zlib debug2: kex_parse_kexinit: none,[email protected],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: [email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1 debug2: kex_parse_kexinit: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256,ssh-ed25519 debug2: kex_parse_kexinit: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected] debug2: kex_parse_kexinit: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected] debug2: kex_parse_kexinit: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1 debug2: kex_parse_kexinit: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1 debug2: kex_parse_kexinit: none,[email protected] debug2: kex_parse_kexinit: none,[email protected] debug2: kex_parse_kexinit: debug2: kex_parse_kexinit: debug2: kex_parse_kexinit: first_kex_follows 0 debug2: kex_parse_kexinit: reserved 0 debug1: kex: server->client [email protected] <implicit> none debug1: kex: client->server [email protected] <implicit> none debug1: expecting SSH2_MSG_KEX_ECDH_REPLY debug1: Server host key: ecdsa-sha2-nistp256 SHA256:R6FEOBAUOfi7AtDpRTFtCH3dRlZS06Z+idRfwFOJXjo debug3: hostkeys_foreach: reading file "/home/user/.ssh/known_hosts" debug3: record_hostkey: found key type ECDSA in file /home/user/.ssh/known_hosts:1 debug3: load_hostkeys: loaded 1 keys from 192.168.1.113 debug1: Host '192.168.1.113' is known and matches the ECDSA host key. debug1: Found key in /home/user/.ssh/known_hosts:1 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: Roaming not allowed by server debug1: SSH2_MSG_SERVICE_REQUEST sent debug2: service_accept: ssh-userauth debug1: SSH2_MSG_SERVICE_ACCEPT received debug2: key: /home/user/.ssh/id_rsa (0x8005f138), debug2: key: /home/user/.ssh/id_dsa (0x0), debug2: key: /home/user/.ssh/id_ecdsa (0x0), debug2: key: /home/user/.ssh/id_ed25519 (0x0), debug1: Authentications that can continue: publickey,password,keyboard-interactive debug3: start over, passed a different list publickey,password,keyboard-interactive 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: Offering RSA public key: /home/user/.ssh/id_rsa debug3: send_pubkey_test debug2: we sent a publickey packet, wait for reply debug1: Server accepts key: pkalg ssh-rsa blen 279 debug2: input_userauth_pk_ok: fp SHA256:SRMkKVOLgsg8NQHSJ89WqcJeW9sB5pj7ho7/pwmbjYI debug3: sign_and_send_pubkey: RSA SHA256:SRMkKVOLgsg8NQHSJ89WqcJeW9sB5pj7ho7/pwmbjYI Connection closed by 192.168.1.113