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Imposibilidad de acceder via SSH desde otro Mac

En principio, siempre he podido acceder via ssh desde todos mis equipos locales, a el imac.


Desde el otro dia recibo un mensaje:


debug2: we sent a publickey packet, wait for reply
Authentication failed


Investigando, ya que tengo claro que la key es corecta revise el log de sshd en el iMac.

cat /var/log/system.log | grep sshd
May  1 16:34:06 iMac-2 com.apple.xpc.launchd[1] (com.openssh.sshd.08CBDEC5-F668-4AE2-B754-26C95478162B[3384]): Service exited with abnormal code: 255
May  1 16:35:05 iMac-2 com.apple.xpc.launchd[1] (com.openssh.sshd.D4422E1F-1A80-4FAE-8029-18B3BB68703C[3410]): Service exited with abnormal code: 255
May  1 16:36:55 iMac-2 com.apple.xpc.launchd[1] (com.openssh.sshd.0C386073-8128-401C-8F15-EF9C71A234A4[3476]): Service exited with abnormal code: 255
May  1 16:37:30 iMac-2 com.apple.xpc.launchd[1] (com.openssh.sshd.8A20EE1F-0895-4182-902F-0FCB9CCAA7A1[3484]): Service exited with abnormal code: 255
May  1 16:38:45 iMac-2 com.apple.xpc.launchd[1] (com.openssh.sshd.B4CA7459-68C5-4E6C-813E-EFAF8677CA8B[3538]): Service exited with abnormal code: 255
May  1 16:46:12 iMac-2 com.apple.xpc.launchd[1] (com.openssh.sshd.E3CBAF98-31B6-4CBA-8D90-06E642E2D743[3774]): Service exited with abnormal code: 255
May  1 16:46:46 iMac-2 com.apple.xpc.launchd[1] (com.openssh.sshd.968EB3D0-AAB1-46D1-B357-60D888AD7664[3820]): Service exited with abnormal code: 255
May  1 16:46:54 iMac-2 com.apple.xpc.launchd[1] (com.openssh.sshd.5CC5A2AD-0A53-4D58-92E8-5D3C5E624F0E[3823]): Service exited with abnormal code: 255
May  1 16:47:00 iMac-2 com.apple.xpc.launchd[1] (com.openssh.sshd.14BEF7AC-7F73-415F-8D20-C2ED5F7CCAE4[3826]): Service exited with abnormal code: 255
May  1 16:47:05 iMac-2 com.apple.xpc.launchd[1] (com.openssh.sshd.5339CF71-0619-47EB-B82C-26E92CB1A1F7[3829]): Service exited with abnormal code: 255
May  1 16:48:13 iMac-2 com.apple.xpc.launchd[1] (com.openssh.sshd.A0F2DFE5-75C4-4673-B6D0-24D69120CA45[3864]): Service exited with abnormal code: 255
May  1 16:48:29 iMac-2 com.apple.xpc.launchd[1] (com.openssh.sshd.0C3F527B-8278-4FC3-A9B9-98056B41B43C[3870]): Service exited with abnormal code: 255
May  1 16:52:30 iMac-2 com.apple.xpc.launchd[1] (com.openssh.sshd.0DF61FC6-4A93-48C6-BF5B-8407D1AB83C4[3944]): Service exited with abnormal code: 255
May  1 16:54:18 iMac-2 com.apple.xpc.launchd[1] (com.openssh.sshd.7A81F205-4D3F-472C-846F-F8EC77E8220E[3983]): Service exited with abnormal code: 255
May  1 16:58:03 iMac-2 com.apple.xpc.launchd[1] (com.openssh.sshd.B76F0DE2-A0A0-4258-A2B9-299B806E8D5F[4398]): Service exited with abnormal code: 255
May  1 16:59:08 iMac-2 com.apple.xpc.launchd[1] (com.openssh.sshd.BAF59C99-0A05-4675-BAA7-913442F881B2[4434]): Service exited with abnormal code: 255
May  1 17:11:23 iMac-2 com.apple.xpc.launchd[1] (com.openssh.sshd.B8885235-D0E5-4A5C-86CC-E5C608BDC3C3[4638]): Service exited with abnormal code: 255
May  1 18:30:24 iMac-2 com.apple.xpc.launchd[1] (com.openssh.sshd.C023A7E3-2310-419E-90C5-0402ECEA6A9D[6503]): Service exited with abnormal code: 255


Asi que puse el tail y pare e inicie el servidor

sudo launchctl stop com.openssh.sshd
sudo launchctl start com.openssh.sshd


tail -f /var/log/system.log | grep sshd
May  1 21:06:03 iMac-2 com.apple.xpc.launchd[1] (com.openssh.sshd[9957]): Service exited with abnormal code: 255

M 1 21:06:03 iMac-2 com.apple.xpc.launchd[1] (com.openssh.sshd[9957]): Service exited with abnormal code: 25


Que puede estar ocurriendo?

iMac, Mac OS X (10.7.5)

Publicado el 1/05/2018 02:42 p. m.

Responder
1 respuesta

2/05/2018 02:46 a. m. en respuesta a abkrim

Ampliando datos.


Si revisamos que no este el demonio activo, y tratamos de cargar en modo debug el demonio, nos indica el problema de que el puerto esta en uso, pero no se ve uso uso... 😕


➜  ~ sudo launchctl stop com.openssh.sshd
➜  ~ ps aux|grep -i ssh
abkrim            1997   0,0  0,0  4268760    876 s001  S+    8:31AM   0:00.03 grep --color=auto --exclude-dir=.bzr --exclude-dir=CVS --exclude-dir=.git --exclude-dir=.hg --exclude-dir=.svn sshd
abkrim            3464   0,0  0,0  4267736    536 s002  R+    9:43AM   0:00.00 grep --color=auto --exclude-dir=.bzr --exclude-dir=CVS --exclude-dir=.git --exclude-dir=.hg --exclude-dir=.svn -i ssh
➜  ~ netstat -a -b|grep 22
tcp4       0      0  192.168.1.69.50229     stackoverflow.co.https ESTABLISHED       1984       4309
tcp4       0      0  192.168.1.69.49391     mad07s09-in-f10..https CLOSE_WAIT       31928       2722
tcp4       0      0  192.168.1.69.49375     wl-in-f125.1e100.jabbe ESTABLISHED       7103     221795
tcp4       0      0  192.168.1.69.49235     17.188.138.70.5223     ESTABLISHED       4589       3293
tcp4       0      0  192.168.1.69.49168     17.188.161.27.5223     ESTABLISHED       6288      10509
tcp6       0      0  *.1022                 *.*                    LISTEN               0          0
tcp4       0      0  localhost.57440        localhost.59987        TIME_WAIT        22872          0
tcp4       0      0  localhost.57453        localhost.59987        TIME_WAIT        22872          0
tcp4       0      0  localhost.57462        localhost.59987        TIME_WAIT        22872          0
tcp4       0      0  192.168.1.69.57154     mad07s10-in-f10..https TIME_WAIT         3307       1622
tcp4       0      0  localhost.57471        localhost.59987        TIME_WAIT        22872          0
653156c2d98141fd stream      0      0                0 653156c2d9813af5                0                0 /var/folders/05/_xy84yn97x50sj004y72rg580000gp/T/vscode-372c4dba36649cd65ea4591ceb962b22091a8ba7.sock
653156c2d2ad5515 stream      0      0 653156c2d0372e45                0                0                0 /var/folders/05/_xy84yn97x50sj004y72rg580000gp/T/vscode-372c4dba36649cd65ea4591ceb962b22091a8ba7.sock
653156c2d2ad80d5 stream      0      0                0 653156c2d2ad819d                0                0 /Users/abkrim/Library/Application Support/Code/1.22.2-shared.sock
653156c2d2ad7905 stream      0      0                0 653156c2d2ad5f3d                0                0 /Users/abkrim/Library/Application Support/Code/1.22.2-shared.sock
653156c2d2ad79cd stream      0      0 653156c2d5447dcd                0                0                0 /Users/abkrim/Library/Application Support/Code/1.22.2-shared.sock
653156c2d175051d stream      0      0 653156c2d201d875                0                0                0 /Users/abkrim/Library/Application Support/Code/1.22.2-main.sock
653156c2c69d45dd stream      0      0 653156c2ce0c6cd5                0                0                0 /var/folders/05/_xy84yn97x50sj004y72rg580000gp/T/36296B3265067C321004C484D7E6DD8A92276C5D.srv
653156c2c9f7c6a5 stream      0      0 653156c2c5938225                0                0                0 /var/tmp/filesystemui.socket
kevt       0      0      1      6      1     12224          0
kctl       0      0        224        144     12      9 com.apple.netsrc
kctl       0      0        224        144     13      9 com.apple.netsrc
kctl       0      0        896        576     22      9 com.apple.netsrc
kctl       0      0        224        144     46      9 com.apple.netsrc
➜  ~sudo /usr/sbin/sshd -ddd
debug2: load_server_config: filename /etc/ssh/sshd_config
debug2: load_server_config: done config len = 290
debug2: parse_server_config: config /etc/ssh/sshd_config len 290
debug3: /etc/ssh/sshd_config:42 setting AuthorizedKeysFile .ssh/authorized_keys
debug3: /etc/ssh/sshd_config:58 setting PasswordAuthentication yes
debug3: /etc/ssh/sshd_config:83 setting UsePAM yes
debug3: /etc/ssh/sshd_config:108 setting AcceptEnv LANG LC_*
debug3: /etc/ssh/sshd_config:114 setting Subsystem sftp /usr/libexec/sftp-server
debug3: /etc/ssh/sshd_config:124 setting XAuthLocation /opt/X11/bin/xauth
debug1: sshd version OpenSSH_7.6, LibreSSL 2.6.2
debug1: private host key #0: ssh-rsa SHA256:Pyv2GkZBE5DYoepXu5yWZ4Y+QAEoPzuU56EisU1D5rI
debug1: private host key #1: ssh-dss SHA256:GY5LotzDXNJ7nXuryDS5HehCcpBgYDieJbIbUnzBU/c
debug1: private host key #2: ecdsa-sha2-nistp256 SHA256:sXVosdAMvhsJ6H17TSIVVRq/fWmo5YG6EHyKm9ARWaw
debug1: private host key #3: ssh-ed25519 SHA256:toO00XtxCi+zs7CU1KE0cHpJ3QvO+YSIlVxnkq8rnaE
debug1: rexec_argv[0]='/usr/sbin/sshd'
debug1: rexec_argv[1]='-ddd'
debug2: fd 4 setting O_NONBLOCK
debug3: sock_set_v6only: set socket 4 IPV6_V6ONLY
debug1: Bind to port 22 on ::.
Bind to port 22 on :: failed: Address already in use.
debug2: fd 4 setting O_NONBLOCK
debug1: Bind to port 22 on 0.0.0.0.
Bind to port 22 on 0.0.0.0 failed: Address already in use.
Cannot bind any address.

Imposibilidad de acceder via SSH desde otro Mac

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