Estou tentando fazer login no final_host de localhost por meio de um intermediário hop , por exemplo:
localhost -> hop -> final_host
Isso funciona:
localhost:~$ ssh -t user@hop "ssh user@final_host"
Isso também funciona:
localhost:~$ ssh user@hop
hop:~$ ssh user@final_host
finalhost:~$
Mas isso não acontece:
localhost:~$ ssh -J user@hop_ip "ssh user@final_host_ip" -vvv
OpenSSH_7.6p1, LibreSSL 2.6.2
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 48: Applying options for *
debug1: Setting implicit ProxyCommand from ProxyJump: ssh -l user -vvv -W '[%h]:%p' hop_ip
debug1: Executing proxy command: exec ssh -l user -vvv -W '[final_host_ip]:22' hop_ip
debug1: key_load_public: No such file or directory
debug1: identity file /Users/user/.ssh/id_rsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/user/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/user/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/user/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/user/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/user/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/user/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/user/.ssh/id_ed25519-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_7.6
debug1: permanently_drop_suid: 501
OpenSSH_7.6p1, LibreSSL 2.6.2
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 48: Applying options for *
debug2: ssh_connect_direct: needpriv 0
debug1: Connecting to hop_ip port 22.
debug1: Connection established.
debug1: key_load_public: No such file or directory
debug1: identity file /Users/user/.ssh/id_rsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/user/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/user/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/user/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/user/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/user/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/user/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/user/.ssh/id_ed25519-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_7.6
debug1: Remote protocol version 2.0, remote software version OpenSSH_7.2p2 Ubuntu-4ubuntu2.4
debug1: match: OpenSSH_7.2p2 Ubuntu-4ubuntu2.4 pat OpenSSH* compat 0x04000000
debug3: fd 5 is O_NONBLOCK
debug1: Authenticating to hop_ip:22 as 'user'
debug3: hostkeys_foreach: reading file "/Users/user/.ssh/known_hosts"
debug3: record_hostkey: found key type ED25519 in file /Users/user/.ssh/known_hosts:1
debug3: load_hostkeys: loaded 1 keys from hop_ip
debug3: order_hostkeyalgs: prefer hostkeyalgs: [email protected],ssh-ed25519
debug3: send packet: type 20
debug1: SSH2_MSG_KEXINIT sent
debug3: receive packet: type 20
debug1: SSH2_MSG_KEXINIT received
debug2: local client KEXINIT proposal
debug2: KEX algorithms: curve25519-sha256,[email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1,ext-info-c
debug2: host key algorithms: [email protected],ssh-ed25519,[email protected],[email protected],[email protected],[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,rsa-sha2-512,rsa-sha2-256,ssh-rsa
debug2: ciphers ctos: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected]
debug2: ciphers stoc: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected]
debug2: MACs ctos: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: MACs stoc: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: compression ctos: none,[email protected],zlib
debug2: compression stoc: none,[email protected],zlib
debug2: languages ctos:
debug2: languages stoc:
debug2: first_kex_follows 0
debug2: reserved 0
debug2: peer server KEXINIT proposal
debug2: KEX algorithms: [email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1
debug2: host key algorithms: ssh-rsa,rsa-sha2-512,rsa-sha2-256,ssh-ed25519
debug2: ciphers ctos: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected]
debug2: ciphers stoc: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected]
debug2: MACs ctos: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: MACs stoc: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: compression ctos: none,[email protected]
debug2: compression stoc: none,[email protected]
debug2: languages ctos:
debug2: languages stoc:
debug2: first_kex_follows 0
debug2: reserved 0
debug1: kex: algorithm: [email protected]
debug1: kex: host key algorithm: ssh-ed25519
debug1: kex: server->client cipher: [email protected] MAC: <implicit> compression: none
debug1: kex: client->server cipher: [email protected] MAC: <implicit> compression: none
debug3: send packet: type 30
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug3: receive packet: type 31
debug1: Server host key: ssh-ed25519 SHA256:c18UMgj7nokTZJHMGnbsOgxDHlIZc2r184efDHtoTLE
debug3: hostkeys_foreach: reading file "/Users/user/.ssh/known_hosts"
debug3: record_hostkey: found key type ED25519 in file /Users/user/.ssh/known_hosts:1
debug3: load_hostkeys: loaded 1 keys from hop_ip
debug1: Host 'hop_ip' is known and matches the ED25519 host key.
debug1: Found key in /Users/user/.ssh/known_hosts:1
debug3: send packet: type 21
debug2: set_newkeys: mode 1
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug3: receive packet: type 21
debug1: SSH2_MSG_NEWKEYS received
debug2: set_newkeys: mode 0
debug1: rekey after 134217728 blocks
debug2: key: server_key_folder/.ssh/id_rsa (0x7f953cc00d70), agent
debug2: key: /Users/user/.ssh/id_rsa (0x0)
debug2: key: /Users/user/.ssh/id_dsa (0x0)
debug2: key: /Users/user/.ssh/id_ecdsa (0x0)
debug2: key: /Users/user/.ssh/id_ed25519 (0x0)
debug3: send packet: type 5
debug3: receive packet: type 7
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<rsa-sha2-256,rsa-sha2-512>
debug3: receive packet: type 6
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug3: send packet: type 50
debug3: receive packet: type 51
debug1: Authentications that can continue: publickey,password
debug3: start over, passed a different list publickey,password
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 public key: RSA SHA256:IhOfM2s2i/vFgY/Mj962CoNez631HDIMDRjxFvDhOEI server_key_folder/.ssh/id_rsa
debug3: send_pubkey_test
debug3: send packet: type 50
debug2: we sent a publickey packet, wait for reply
debug3: receive packet: type 60
debug1: Server accepts key: pkalg rsa-sha2-512 blen 279
debug2: input_userauth_pk_ok: fp SHA256:IhOfM2s2i/vFgY/Mj963CoNez631HDIMDRvxFvDhOEI
debug3: sign_and_send_pubkey: RSA SHA256:IhOfM2s2i/vFgY/Mj963CoNez631HDIMDRvxFvDhOEI
debug3: send packet: type 50
debug3: receive packet: type 52
debug1: Authentication succeeded (publickey).
Authenticated to hop_ip ([hop_ip]:22).
debug3: ssh_init_stdio_forwarding: final_host_ip:22
debug1: channel_connect_stdio_fwd final_host_ip:22
debug1: channel 0: new [stdio-forward]
debug2: fd 7 setting O_NONBLOCK
debug2: fd 8 setting O_NONBLOCK
debug1: getpeername failed: Bad file descriptor
debug3: send packet: type 90
debug2: fd 5 setting TCP_NODELAY
debug3: ssh_packet_set_tos: set IP_TOS 0x10
debug1: Requesting [email protected]
debug3: send packet: type 80
debug1: Entering interactive session.
debug1: pledge: network
debug3: receive packet: type 80
debug1: client_input_global_request: rtype [email protected] want_reply 0
debug3: receive packet: type 91
debug2: channel_input_open_confirmation: channel 0: callback start
debug2: channel_input_open_confirmation: channel 0: callback done
debug2: channel 0: open confirm rwindow 2097152 rmax 32768
debug1: ssh_exchange_identification: 3]1337;PushKeyLabels=fish_%self3]1337;SetKeyLabel=F2=GitSSH-2.0-OpenSSH_7.2p2 Ubuntu-4ubuntu2.4
debug1: ssh_exchange_identification:
debug1: ssh_exchange_identification: 4n��3�0d66�5A6
debug1: ssh_exchange_identification: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected]
debug1: ssh_exchange_identification: sh.com,[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug3: receive packet: type 98
debug1: client_input_channel_req: channel 0 rtype [email protected] reply 1
debug3: send packet: type 100
debug3: receive packet: type 96
debug2: channel 0: rcvd eof
debug2: channel 0: output open -> drain
debug2: channel 0: obuf empty
debug2: channel 0: close_write
debug2: channel 0: output drain -> closed
debug1: channel 0: FORCE input drain
debug2: channel 0: ibuf empty
debug2: channel 0: send eof
debug3: send packet: type 96
debug2: channel 0: input drain -> closed
debug3: receive packet: type 97
debug2: channel 0: rcvd close
debug3: channel 0: will not send data after close
debug2: channel 0: almost dead
debug2: channel 0: gc: notify user
debug1: stdio forwarding: done
ssh_exchange_identification: Connection closed by remote host
Ele fica preso por um tempo antes de fechar a conexão. Usar um arquivo de configuração com ProxyJump , ProxyCommand -W ou ProxyCommand + nc também não funciona e fica preso no mesmo ponto. Além disso, isso parou de funcionar em algum momento, eu era capaz de usar ProxyCommand no passado e de repente parou de funcionar um dia sem alteração de configuração aparente do meu lado. O que poderia estar acontecendo aqui e o que posso fazer para depurar ainda mais?
EDIT: Devo salientar que outros usuários do mesmo sistema são capazes de fazer o login sem problemas através do arquivo de configuração, então o problema é provavelmente local.
A autenticação para final_host é bem-sucedida, mas você recebe este erro: getpeername failed: Bad file descriptor .
O daemon ssh no final_host e hop deve conectar os descritores de arquivos para você usar (stdin, stdout, stderr) no seu localhost. Isso falha.
A função mencionada deve apontar você na direção certa. Você está usando um endereço IP que pode não ter uma entrada de DNS reversa, nem uma linha em / etc / hosts.
Tags ssh