izin ssh ditolak (publickey, keyboard-interaktif)

0

Mengapa saya bersikeras mengajukan pertanyaan

Saya telah melakukan pencarian cepat pada masalah ini dan melakukan beberapa solusi yang telah dikatakan. Tidak ada yang berhasil.

Apa yang saya lakukan

Termux sebagai tuan rumah. Dipasang apt install openssh, dibuat publickey ssh-keygendengan frasa sandi kosong. Jadi saya melanjutkan cat id_rsa.pub >> authorized_keys. Mencoba ssh dengan ssh localhost -p 8022 -i id_rsamesin host. Tidak masalah. Tetapi dengan ssh IP -p 8022 -i id_rsadi mesin tamu, tidak berhasil. saya mendapatPermission denied (publickey,keyboard-interactive)

sshd -d

  • Dari mesin host (sukses)

    $ sshd -d
debug1: sshd version OpenSSH_7.8, OpenSSL 1.1.1  11 Sep 2018
debug1: private host key #0: ssh-rsa SHA256:iFL8gWX/82tKCisCVLKZBNPOqjhCJkc7FsMnrpgnvLQ
debug1: private host key #1: ecdsa-sha2-nistp256 SHA256:e6xyxgJ4tsTWSgh/l8ugijsCnJNz10tc+CLtuLFiUvE
debug1: private host key #2: ssh-ed25519 SHA256:5+j3igYvX5HjpIMV9OikSdhN9JxDzxhHkDfkA7huHp8
debug1: rexec_argv[0]='/data/data/com.termux/files/usr/bin/sshd'
debug1: rexec_argv[1]='-d'
debug1: Bind to port 8022 on ::.
Server listening on :: port 8022.
debug1: Bind to port 8022 on 0.0.0.0.
Server listening on 0.0.0.0 port 8022.
debug1: Server will not fork when running in debugging mode.
debug1: rexec start in 7 out 7 newsock 7 pipe -1 sock 10
debug1: inetd sockets after dupping: 5, 5
Connection from 127.0.0.1 port 54583 on 127.0.0.1 port 8022
debug1: Client protocol version 2.0; client software version OpenSSH_7.8
debug1: match: OpenSSH_7.8 pat OpenSSH* compat 0x04000000
debug1: Local version string SSH-2.0-OpenSSH_7.8
debug1: list_hostkey_types: rsa-sha2-512,rsa-sha2-256,ssh-rsa,ecdsa-sha2-nistp256,ssh-ed25519
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: curve25519-sha256
debug1: kex: host key algorithm: ecdsa-sha2-nistp256
debug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: expecting SSH2_MSG_KEX_ECDH_INIT
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: rekey after 134217728 blocks
debug1: KEX done
debug1: userauth-request for user u0_a121 service ssh-connection method none
debug1: attempt 0 failures 0
Failed none for u0_a121 from 127.0.0.1 port 54583 ssh2
debug1: userauth-request for user u0_a121 service ssh-connection method publickey
debug1: attempt 1 failures 0
debug1: userauth_pubkey: test pkalg rsa-sha2-512 pkblob RSA SHA256:R9btL/xmY/LOZrXIoPjARJxTpAkWUyR4QB5bAIVlEh0
debug1: temporarily_use_uid: 10121/10121 (e=10121/10121)
debug1: trying public key file /data/data/com.termux/files/home/.ssh/authorized_keys
debug1: fd 9 clearing O_NONBLOCK
debug1: /data/data/com.termux/files/home/.ssh/authorized_keys:2: matching key found: RSA SHA256:R9btL/xmY/LOZrXIoPjARJxTpAkWUyR4QB5bAIVlEh0
debug1: /data/data/com.termux/files/home/.ssh/authorized_keys:2: key options: agent-forwarding port-forwarding pty user-rc x11-forwarding
Accepted key RSA SHA256:R9btL/xmY/LOZrXIoPjARJxTpAkWUyR4QB5bAIVlEh0 found at /data/data/com.termux/files/home/.ssh/authorized_keys:2
debug1: restore_uid: (unprivileged)
Postponed publickey for u0_a121 from 127.0.0.1 port 54583 ssh2
debug1: userauth-request for user u0_a121 service ssh-connection method publickey
debug1: attempt 2 failures 0
debug1: temporarily_use_uid: 10121/10121 (e=10121/10121)
debug1: trying public key file /data/data/com.termux/files/home/.ssh/authorized_keys
debug1: fd 9 clearing O_NONBLOCK
debug1: /data/data/com.termux/files/home/.ssh/authorized_keys:2: matching key found: RSA SHA256:R9btL/xmY/LOZrXIoPjARJxTpAkWUyR4QB5bAIVlEh0
debug1: /data/data/com.termux/files/home/.ssh/authorized_keys:2: key options: agent-forwarding port-forwarding pty user-rc x11-forwarding
Accepted key RSA SHA256:R9btL/xmY/LOZrXIoPjARJxTpAkWUyR4QB5bAIVlEh0 found at /data/data/com.termux/files/home/.ssh/authorized_keys:2
debug1: restore_uid: (unprivileged)
debug1: auth_activate_options: setting new authentication options
Accepted publickey for u0_a121 from 127.0.0.1 port 54583 ssh2: RSA SHA256:R9btL/xmY/LOZrXIoPjARJxTpAkWUyR4QB5bAIVlEh0
debug1: active: key options: agent-forwarding port-forwarding pty user-rc x11-forwarding
debug1: Entering interactive session for SSH2.
debug1: server_init_dispatch
debug1: server_input_channel_open: ctype session rchan 0 win 1048576 max 16384
debug1: input_session_request
debug1: channel 0: new [server-session]
debug1: session_new: session 0
debug1: session_open: channel 0
debug1: session_open: session 0: link with channel 0debug1: session_open: session 0: link with channel 0
debug1: server_input_channel_open: confirm session
debug1: server_input_global_request: rtype no-more-sessions@openssh.com want_reply 0
debug1: server_input_channel_req: channel 0 request pty-req reply 1
debug1: session_by_channel: session 0 channel 0
debug1: session_input_channel_req: session 0 req pty-req
debug1: Allocating pty.
debug1: session_pty_req: session 0 alloc /dev/pts/2
debug1: server_input_channel_req: channel 0 request env reply 0
debug1: session_by_channel: session 0 channel 0
debug1: session_input_channel_req: session 0 req env
debug1: server_input_channel_req: channel 0 request shell reply 1
debug1: session_by_channel: session 0 channel 0
debug1: session_input_channel_req: session 0 req shell
Starting session: shell on pts/2 for u0_a121 from 127.0.0.1 port 54583 id 0
debug1: Setting controlling tty using TIOCSCTTY.

  • Dari mesin tamu (Izin ditolak)

    $ sshd -d
debug1: sshd version OpenSSH_7.8, OpenSSL 1.1.1  11 Sep 2018
debug1: private host key #0: ssh-rsa SHA256:iFL8gWX/82tKCisCVLKZBNPOqjhCJkc7FsMnrpgnvLQ
debug1: private host key #1: ecdsa-sha2-nistp256 SHA256:e6xyxgJ4tsTWSgh/l8ugijsCnJNz10tc+CLtuLFiUvE
debug1: private host key #2: ssh-ed25519 SHA256:5+j3igYvX5HjpIMV9OikSdhN9JxDzxhHkDfkA7huHp8
debug1: rexec_argv[0]='/data/data/com.termux/files/usr/bin/sshd'
debug1: rexec_argv[1]='-d'
debug1: Bind to port 8022 on ::.
Server listening on :: port 8022.
debug1: Bind to port 8022 on 0.0.0.0.
Server listening on 0.0.0.0 port 8022.
debug1: Server will not fork when running in debugging mode.
debug1: rexec start in 7 out 7 newsock 7 pipe -1 sock 10
debug1: inetd sockets after dupping: 5, 5
Connection from 192.168.0.154 port 45802 on 192.168.0.197 port 8022
debug1: Client protocol version 2.0; client software version OpenSSH_7.4p1 Debian-10+deb9u4
debug1: match: OpenSSH_7.4p1 Debian-10+deb9u4 pat OpenSSH_7.0*,OpenSSH_7.1*,OpenSSH_7.2*,OpenSSH_7.3*,OpenSSH_7.4*,OpenSSH_7.5*,OpenSSH_7.6*,OpenSSH_7.7* compat 0x04000002
debug1: Local version string SSH-2.0-OpenSSH_7.8
debug1: list_hostkey_types: rsa-sha2-512,rsa-sha2-256,ssh-rsa,ecdsa-sha2-nistp256,ssh-ed25519
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: curve25519-sha256
debug1: kex: host key algorithm: ecdsa-sha2-nistp256
debug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: expecting SSH2_MSG_KEX_ECDH_INIT
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: rekey after 134217728 blocks
debug1: KEX done
debug1: userauth-request for user izzatnasrun service ssh-connection method none
debug1: attempt 0 failures 0
Failed none for izzatnasrun from 192.168.0.154 port 45802 ssh2
debug1: userauth-request for user izzatnasrun service ssh-connection method keyboard-interactive
debug1: attempt 1 failures 0
debug1: keyboard-interactive devs
debug1: auth2_challenge: user=izzatnasrun devs=
debug1: kbdint_alloc: devices ''
Failed keyboard-interactive for izzatnasrun from 192.168.0.154 port 45802 ssh2
Connection closed by authenticating user izzatnasrun 192.168.0.154 port 45802
debug1: do_cleanup

CATATAN

  • Izin adalah sebagai berikut pada mesin host

    chmod 600 ~/.ssh/authorized_keys
chmod 700 ~/.ssh
chmod 700 ~

  • Termux sshd diatur sebagai standar 8022

  • Termux tidak menerima kata sandi jadi PasswordAuthentication noitu suatu keharusan
ssh  debian  android  openssh  sshd 
— eZeth
sumber
2
Kedengarannya hampir seperti Anda membingungkan mesin host dan terminal Anda, dan bahwa Anda telah membuat kunci id_rsa baru pada mesin host (yang mungkin bukan yang ingin Anda lakukan). Bisakah Anda lebih jelas tentang di mana Anda telah menciptakan sumber daya apa?
— davidgo
Ahh begitu. Jadi Anda harus membuat id_rsa baru pada mesin tamu dan menggunakan kunci publik mesin tamu pada mesin host ssh.
— eZeth
Iya nih. Berpura-pura Anda tidak memiliki mesin tamu, kunci pribadi adalah pribadi, sehingga Anda membuatnya di sistem Anda, lalu Anda memberikan kunci publik ke server untuk memberikan akses.
— davidgo

Jawaban:

0

Kunci publik harus dibuat di mesin tamu. Jadi mesin tamu ssh-keygendan dari cat id_rsa.pub >> authorized_keysmana id_rsa.pubada mesin tamu dan authorized_keysada di mesin host.

— eZeth
sumber
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