Comments (15)
mkj
commented on July 3, 2024
Can you get a tcpdump/wireshark capture of the failed session?
My first thoughts would be either DNS or network MTU has problems.
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q000p
commented on July 3, 2024
dump3.zip
The session is not failed but so long.
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mkj
commented on July 3, 2024
Dropbear delays 5 seconds from accepting the connection and sending the first packet.
Did you compile Dropbear, or where is the package from? DNS seems a likely reason if it's different from different networks, but the default config for Dropbear is to disable host lookups (#define DO_HOST_LOOKUP 0).
Another possibility is that session key exchange crypto is slow. When you were connecting from different networks (which were fast), was it a different SSH client? What kind of device is Dropbear running on?
No. Time Source Destination Protocol Length Message type Message type Value Info
5 0.004736 192.168.222.41 192.168.11.2 TCP 60 22 22 → 59661 [ACK] Seq=1 Ack=22 Win=64224 Len=0
6 5.031283 192.168.222.41 192.168.11.2 SSHv2 560 22 Server: Protocol (SSH-2.0-dropbear_2020.79), Key Exchange Init
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q000p
commented on July 3, 2024
I compiled dropbear with default options (as I understood with disable host lookups)
I tried to connect from same PC to device. If network is different, I will have delay.
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mkj
commented on July 3, 2024
What hardware and OS is Dropbear running on?
What client are you using from each network?
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q000p
commented on July 3, 2024
The device based on ARMv7 and buildroot.
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q000p
commented on July 3, 2024
About clients:
Last test was on OpenSSH_for_Windows_8.1p1, LibreSSL 3.0.2
The bug present also:
OpenSSH_9.3p1, OpenSSL 1.1.1t 7 Feb 2023
OpenSSH_8.2p1 Ubuntu-4ubuntu0.9, OpenSSL 1.1.1f 31 Mar 2020
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mkj
commented on July 3, 2024
Can you send "ssh -vvv" output from both the fast and the slow networks?
Thanks
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q000p
commented on July 3, 2024
The same network:
C:\Users\framegrabber>ssh [email protected] -vvv OpenSSH_for_Windows_8.1p1, LibreSSL 3.0.2 debug3: Failed to open file:C:/Users/framegrabber/.ssh/config error:2 debug3: Failed to open file:C:/ProgramData/ssh/ssh_config error:2 debug2: resolve_canonicalize: hostname 192.168.226.40 is address debug2: ssh_connect_direct debug1: Connecting to 192.168.226.40 [192.168.226.40] port 22. debug1: Connection established. debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_rsa error:2 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_rsa.pub error:2 debug1: identity file C:\\Users\\framegrabber/.ssh/id_rsa type -1 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_rsa-cert error:2 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_rsa-cert.pub error:2 debug1: identity file C:\\Users\\framegrabber/.ssh/id_rsa-cert type -1 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_dsa error:2 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_dsa.pub error:2 debug1: identity file C:\\Users\\framegrabber/.ssh/id_dsa type -1 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_dsa-cert error:2 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_dsa-cert.pub error:2 debug1: identity file C:\\Users\\framegrabber/.ssh/id_dsa-cert type -1 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_ecdsa error:2 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_ecdsa.pub error:2 debug1: identity file C:\\Users\\framegrabber/.ssh/id_ecdsa type -1 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_ecdsa-cert error:2 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_ecdsa-cert.pub error:2 debug1: identity file C:\\Users\\framegrabber/.ssh/id_ecdsa-cert type -1 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_ed25519 error:2 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_ed25519.pub error:2 debug1: identity file C:\\Users\\framegrabber/.ssh/id_ed25519 type -1 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_ed25519-cert error:2 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_ed25519-cert.pub error:2 debug1: identity file C:\\Users\\framegrabber/.ssh/id_ed25519-cert type -1 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_xmss error:2 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_xmss.pub error:2 debug1: identity file C:\\Users\\framegrabber/.ssh/id_xmss type -1 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_xmss-cert error:2 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_xmss-cert.pub error:2 debug1: identity file C:\\Users\\framegrabber/.ssh/id_xmss-cert type -1 debug1: Local version string SSH-2.0-OpenSSH_for_Windows_8.1 debug1: Remote protocol version 2.0, remote software version dropbear_2020.79 debug1: no match: dropbear_2020.79 debug2: fd 3 setting O_NONBLOCK debug1: Authenticating to 192.168.226.40:22 as 'root' debug3: hostkeys_foreach: reading file "C:\\Users\\framegrabber/.ssh/known_hosts" debug3: record_hostkey: found key type ECDSA in file C:\\Users\\framegrabber/.ssh/known_hosts:4 debug3: load_hostkeys: loaded 1 keys from 192.168.226.40 debug3: Failed to open file:C:/Users/framegrabber/.ssh/known_hosts2 error:2 debug3: Failed to open file:C:/ProgramData/ssh/ssh_known_hosts error:2 debug3: Failed to open file:C:/ProgramData/ssh/ssh_known_hosts2 error:2 debug3: order_hostkeyalgs: prefer hostkeyalgs: [email protected],[email protected],[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521 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-group14-sha256,diffie-hellman-group14-sha1,ext-info-c debug2: host key algorithms: [email protected],[email protected],[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,[email protected],[email protected],[email protected],[email protected],ssh-ed25519,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: curve25519-sha256,[email protected],ecdh-sha2-nistp521,ecdh-sha2-nistp384,ecdh-sha2-nistp256,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1,[email protected] debug2: host key algorithms: ssh-ed25519,ecdsa-sha2-nistp256,rsa-sha2-256,ssh-rsa,ssh-dss debug2: ciphers ctos: [email protected],aes128-ctr,aes256-ctr debug2: ciphers stoc: [email protected],aes128-ctr,aes256-ctr debug2: MACs ctos: hmac-sha1,hmac-sha2-256 debug2: MACs stoc: hmac-sha1,hmac-sha2-256 debug2: compression ctos: none debug2: compression stoc: none debug2: languages ctos: debug2: languages stoc: debug2: first_kex_follows 0 debug2: reserved 0 debug1: kex: algorithm: curve25519-sha256 debug1: kex: host key algorithm: ecdsa-sha2-nistp256 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: ecdsa-sha2-nistp256 SHA256:1Shqyzo7ByuUKYVK0aJ4UFncxEnSPiN+YAE618bfLYY debug3: hostkeys_foreach: reading file "C:\\Users\\framegrabber/.ssh/known_hosts" debug3: record_hostkey: found key type ECDSA in file C:\\Users\\framegrabber/.ssh/known_hosts:4 debug3: load_hostkeys: loaded 1 keys from 192.168.226.40 debug3: Failed to open file:C:/Users/framegrabber/.ssh/known_hosts2 error:2 debug3: Failed to open file:C:/ProgramData/ssh/ssh_known_hosts error:2 debug3: Failed to open file:C:/ProgramData/ssh/ssh_known_hosts2 error:2 debug1: Host '192.168.226.40' is known and matches the ECDSA host key. debug1: Found key in C:\\Users\\framegrabber/.ssh/known_hosts:4 debug3: send packet: type 21 debug2: set_newkeys: mode 1 debug1: rekey out 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 in after 134217728 blocks debug3: unable to connect to pipe \\\\.\\pipe\\openssh-ssh-agent, error: 2 debug1: pubkey_prepare: ssh_get_authentication_socket: No such file or directory debug1: Will attempt key: C:\\Users\\framegrabber/.ssh/id_rsa debug1: Will attempt key: C:\\Users\\framegrabber/.ssh/id_dsa debug1: Will attempt key: C:\\Users\\framegrabber/.ssh/id_ecdsa debug1: Will attempt key: C:\\Users\\framegrabber/.ssh/id_ed25519 debug1: Will attempt key: C:\\Users\\framegrabber/.ssh/id_xmss debug2: pubkey_prepare: done debug3: send packet: type 5 debug3: receive packet: type 7 debug1: SSH2_MSG_EXT_INFO received debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,rsa-sha2-256,ssh-rsa,ssh-dss> 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: Trying private key: C:\\Users\\framegrabber/.ssh/id_rsa debug3: no such identity: C:\\Users\\framegrabber/.ssh/id_rsa: No such file or directory debug1: Trying private key: C:\\Users\\framegrabber/.ssh/id_dsa debug3: no such identity: C:\\Users\\framegrabber/.ssh/id_dsa: No such file or directory debug1: Trying private key: C:\\Users\\framegrabber/.ssh/id_ecdsa debug3: no such identity: C:\\Users\\framegrabber/.ssh/id_ecdsa: No such file or directory debug1: Trying private key: C:\\Users\\framegrabber/.ssh/id_ed25519 debug3: no such identity: C:\\Users\\framegrabber/.ssh/id_ed25519: No such file or directory debug1: Trying private key: C:\\Users\\framegrabber/.ssh/id_xmss debug3: no such identity: C:\\Users\\framegrabber/.ssh/id_xmss: No such file or directory debug2: we did not send a packet, disable method debug3: authmethod_lookup password debug3: remaining preferred: ,password debug3: authmethod_is_enabled password debug1: Next authentication method: password debug3: failed to open file:C:/dev/tty error:3 debug1: read_passphrase: can't open /dev/tty: No such file or directory [email protected]'s password:
The another network
C:\Users\framegrabber>ssh [email protected] -vvv OpenSSH_for_Windows_8.1p1, LibreSSL 3.0.2 debug3: Failed to open file:C:/Users/framegrabber/.ssh/config error:2 debug3: Failed to open file:C:/ProgramData/ssh/ssh_config error:2 debug2: resolve_canonicalize: hostname 192.168.226.40 is address debug2: ssh_connect_direct debug1: Connecting to 192.168.226.40 [192.168.226.40] port 22. debug1: Connection established. debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_rsa error:2 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_rsa.pub error:2 debug1: identity file C:\\Users\\framegrabber/.ssh/id_rsa type -1 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_rsa-cert error:2 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_rsa-cert.pub error:2 debug1: identity file C:\\Users\\framegrabber/.ssh/id_rsa-cert type -1 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_dsa error:2 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_dsa.pub error:2 debug1: identity file C:\\Users\\framegrabber/.ssh/id_dsa type -1 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_dsa-cert error:2 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_dsa-cert.pub error:2 debug1: identity file C:\\Users\\framegrabber/.ssh/id_dsa-cert type -1 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_ecdsa error:2 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_ecdsa.pub error:2 debug1: identity file C:\\Users\\framegrabber/.ssh/id_ecdsa type -1 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_ecdsa-cert error:2 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_ecdsa-cert.pub error:2 debug1: identity file C:\\Users\\framegrabber/.ssh/id_ecdsa-cert type -1 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_ed25519 error:2 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_ed25519.pub error:2 debug1: identity file C:\\Users\\framegrabber/.ssh/id_ed25519 type -1 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_ed25519-cert error:2 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_ed25519-cert.pub error:2 debug1: identity file C:\\Users\\framegrabber/.ssh/id_ed25519-cert type -1 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_xmss error:2 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_xmss.pub error:2 debug1: identity file C:\\Users\\framegrabber/.ssh/id_xmss type -1 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_xmss-cert error:2 debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_xmss-cert.pub error:2 debug1: identity file C:\\Users\\framegrabber/.ssh/id_xmss-cert type -1 debug1: Local version string SSH-2.0-OpenSSH_for_Windows_8.1 debug1: Remote protocol version 2.0, remote software version dropbear_2020.79 debug1: no match: dropbear_2020.79 debug2: fd 3 setting O_NONBLOCK debug1: Authenticating to 192.168.226.40:22 as 'root' debug3: hostkeys_foreach: reading file "C:\\Users\\framegrabber/.ssh/known_hosts" debug3: record_hostkey: found key type ECDSA in file C:\\Users\\framegrabber/.ssh/known_hosts:4 debug3: load_hostkeys: loaded 1 keys from 192.168.226.40 debug3: Failed to open file:C:/Users/framegrabber/.ssh/known_hosts2 error:2 debug3: Failed to open file:C:/ProgramData/ssh/ssh_known_hosts error:2 debug3: Failed to open file:C:/ProgramData/ssh/ssh_known_hosts2 error:2 debug3: order_hostkeyalgs: prefer hostkeyalgs: [email protected],[email protected],[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521 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-group14-sha256,diffie-hellman-group14-sha1,ext-info-c debug2: host key algorithms: [email protected],[email protected],[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,[email protected],[email protected],[email protected],[email protected],ssh-ed25519,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: curve25519-sha256,[email protected],ecdh-sha2-nistp521,ecdh-sha2-nistp384,ecdh-sha2-nistp256,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1,[email protected] debug2: host key algorithms: ssh-ed25519,ecdsa-sha2-nistp256,rsa-sha2-256,ssh-rsa,ssh-dss debug2: ciphers ctos: [email protected],aes128-ctr,aes256-ctr debug2: ciphers stoc: [email protected],aes128-ctr,aes256-ctr debug2: MACs ctos: hmac-sha1,hmac-sha2-256 debug2: MACs stoc: hmac-sha1,hmac-sha2-256 debug2: compression ctos: none debug2: compression stoc: none debug2: languages ctos: debug2: languages stoc: debug2: first_kex_follows 0 debug2: reserved 0 debug1: kex: algorithm: curve25519-sha256 debug1: kex: host key algorithm: ecdsa-sha2-nistp256 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: ecdsa-sha2-nistp256 SHA256:1Shqyzo7ByuUKYVK0aJ4UFncxEnSPiN+YAE618bfLYY debug3: hostkeys_foreach: reading file "C:\\Users\\framegrabber/.ssh/known_hosts" debug3: record_hostkey: found key type ECDSA in file C:\\Users\\framegrabber/.ssh/known_hosts:4 debug3: load_hostkeys: loaded 1 keys from 192.168.226.40 debug3: Failed to open file:C:/Users/framegrabber/.ssh/known_hosts2 error:2 debug3: Failed to open file:C:/ProgramData/ssh/ssh_known_hosts error:2 debug3: Failed to open file:C:/ProgramData/ssh/ssh_known_hosts2 error:2 debug1: Host '192.168.226.40' is known and matches the ECDSA host key. debug1: Found key in C:\\Users\\framegrabber/.ssh/known_hosts:4 debug3: send packet: type 21 debug2: set_newkeys: mode 1 debug1: rekey out 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 in after 134217728 blocks debug3: unable to connect to pipe \\\\.\\pipe\\openssh-ssh-agent, error: 2 debug1: pubkey_prepare: ssh_get_authentication_socket: No such file or directory debug1: Will attempt key: C:\\Users\\framegrabber/.ssh/id_rsa debug1: Will attempt key: C:\\Users\\framegrabber/.ssh/id_dsa debug1: Will attempt key: C:\\Users\\framegrabber/.ssh/id_ecdsa debug1: Will attempt key: C:\\Users\\framegrabber/.ssh/id_ed25519 debug1: Will attempt key: C:\\Users\\framegrabber/.ssh/id_xmss debug2: pubkey_prepare: done debug3: send packet: type 5 debug3: receive packet: type 7 debug1: SSH2_MSG_EXT_INFO received debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,rsa-sha2-256,ssh-rsa,ssh-dss> 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: Trying private key: C:\\Users\\framegrabber/.ssh/id_rsa debug3: no such identity: C:\\Users\\framegrabber/.ssh/id_rsa: No such file or directory debug1: Trying private key: C:\\Users\\framegrabber/.ssh/id_dsa debug3: no such identity: C:\\Users\\framegrabber/.ssh/id_dsa: No such file or directory debug1: Trying private key: C:\\Users\\framegrabber/.ssh/id_ecdsa debug3: no such identity: C:\\Users\\framegrabber/.ssh/id_ecdsa: No such file or directory debug1: Trying private key: C:\\Users\\framegrabber/.ssh/id_ed25519 debug3: no such identity: C:\\Users\\framegrabber/.ssh/id_ed25519: No such file or directory debug1: Trying private key: C:\\Users\\framegrabber/.ssh/id_xmss debug3: no such identity: C:\\Users\\framegrabber/.ssh/id_xmss: No such file or directory debug2: we did not send a packet, disable method debug3: authmethod_lookup password debug3: remaining preferred: ,password debug3: authmethod_is_enabled password debug1: Next authentication method: password debug3: failed to open file:C:/dev/tty error:3 debug1: read_passphrase: can't open /dev/tty: No such file or directory [email protected]'s password:
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q000p
commented on July 3, 2024
As I understood all logs are identical.
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mkj
commented on July 3, 2024
It looks like the newlines got broken, can you try paste it differently?
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q000p
commented on July 3, 2024
The same network
C:\Users\framegrabber>ssh [email protected] -vvv
OpenSSH_for_Windows_8.1p1, LibreSSL 3.0.2
debug3: Failed to open file:C:/Users/framegrabber/.ssh/config error:2
debug3: Failed to open file:C:/ProgramData/ssh/ssh_config error:2
debug2: resolve_canonicalize: hostname 192.168.226.40 is address
debug2: ssh_connect_direct
debug1: Connecting to 192.168.226.40 [192.168.226.40] port 22.
debug1: Connection established.
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_rsa error:2
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_rsa.pub error:2
debug1: identity file C:\Users\framegrabber/.ssh/id_rsa type -1
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_rsa-cert error:2
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_rsa-cert.pub error:2
debug1: identity file C:\Users\framegrabber/.ssh/id_rsa-cert type -1
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_dsa error:2
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_dsa.pub error:2
debug1: identity file C:\Users\framegrabber/.ssh/id_dsa type -1
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_dsa-cert error:2
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_dsa-cert.pub error:2
debug1: identity file C:\Users\framegrabber/.ssh/id_dsa-cert type -1
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_ecdsa error:2
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_ecdsa.pub error:2
debug1: identity file C:\Users\framegrabber/.ssh/id_ecdsa type -1
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_ecdsa-cert error:2
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_ecdsa-cert.pub error:2
debug1: identity file C:\Users\framegrabber/.ssh/id_ecdsa-cert type -1
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_ed25519 error:2
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_ed25519.pub error:2
debug1: identity file C:\Users\framegrabber/.ssh/id_ed25519 type -1
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_ed25519-cert error:2
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_ed25519-cert.pub error:2
debug1: identity file C:\Users\framegrabber/.ssh/id_ed25519-cert type -1
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_xmss error:2
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_xmss.pub error:2
debug1: identity file C:\Users\framegrabber/.ssh/id_xmss type -1
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_xmss-cert error:2
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_xmss-cert.pub error:2
debug1: identity file C:\Users\framegrabber/.ssh/id_xmss-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_for_Windows_8.1
debug1: Remote protocol version 2.0, remote software version dropbear_2020.79
debug1: no match: dropbear_2020.79
debug2: fd 3 setting O_NONBLOCK
debug1: Authenticating to 192.168.226.40:22 as 'root'
debug3: hostkeys_foreach: reading file "C:\Users\framegrabber/.ssh/known_hosts"
debug3: record_hostkey: found key type ECDSA in file C:\Users\framegrabber/.ssh/known_hosts:4
debug3: load_hostkeys: loaded 1 keys from 192.168.226.40
debug3: Failed to open file:C:/Users/framegrabber/.ssh/known_hosts2 error:2
debug3: Failed to open file:C:/ProgramData/ssh/ssh_known_hosts error:2
debug3: Failed to open file:C:/ProgramData/ssh/ssh_known_hosts2 error:2
debug3: order_hostkeyalgs: prefer hostkeyalgs: [email protected],[email protected],[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521
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-group14-sha256,diffie-hellman-group14-sha1,ext-info-c
debug2: host key algorithms: [email protected],[email protected],[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,[email protected],[email protected],[email protected],[email protected],ssh-ed25519,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: curve25519-sha256,[email protected],ecdh-sha2-nistp521,ecdh-sha2-nistp384,ecdh-sha2-nistp256,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1,[email protected]
debug2: host key algorithms: ssh-ed25519,ecdsa-sha2-nistp256,rsa-sha2-256,ssh-rsa,ssh-dss
debug2: ciphers ctos: [email protected],aes128-ctr,aes256-ctr
debug2: ciphers stoc: [email protected],aes128-ctr,aes256-ctr
debug2: MACs ctos: hmac-sha1,hmac-sha2-256
debug2: MACs stoc: hmac-sha1,hmac-sha2-256
debug2: compression ctos: none
debug2: compression stoc: none
debug2: languages ctos:
debug2: languages stoc:
debug2: first_kex_follows 0
debug2: reserved 0
debug1: kex: algorithm: curve25519-sha256
debug1: kex: host key algorithm: ecdsa-sha2-nistp256
debug1: kex: server->client cipher: [email protected] MAC: compression: none
debug1: kex: client->server cipher: [email protected] MAC: compression: none
debug3: send packet: type 30
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug3: receive packet: type 31
debug1: Server host key: ecdsa-sha2-nistp256 SHA256:1Shqyzo7ByuUKYVK0aJ4UFncxEnSPiN+YAE618bfLYY
debug3: hostkeys_foreach: reading file "C:\Users\framegrabber/.ssh/known_hosts"
debug3: record_hostkey: found key type ECDSA in file C:\Users\framegrabber/.ssh/known_hosts:4
debug3: load_hostkeys: loaded 1 keys from 192.168.226.40
debug3: Failed to open file:C:/Users/framegrabber/.ssh/known_hosts2 error:2
debug3: Failed to open file:C:/ProgramData/ssh/ssh_known_hosts error:2
debug3: Failed to open file:C:/ProgramData/ssh/ssh_known_hosts2 error:2
debug1: Host '192.168.226.40' is known and matches the ECDSA host key.
debug1: Found key in C:\Users\framegrabber/.ssh/known_hosts:4
debug3: send packet: type 21
debug2: set_newkeys: mode 1
debug1: rekey out 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 in after 134217728 blocks
debug3: unable to connect to pipe \\.\pipe\openssh-ssh-agent, error: 2
debug1: pubkey_prepare: ssh_get_authentication_socket: No such file or directory
debug1: Will attempt key: C:\Users\framegrabber/.ssh/id_rsa
debug1: Will attempt key: C:\Users\framegrabber/.ssh/id_dsa
debug1: Will attempt key: C:\Users\framegrabber/.ssh/id_ecdsa
debug1: Will attempt key: C:\Users\framegrabber/.ssh/id_ed25519
debug1: Will attempt key: C:\Users\framegrabber/.ssh/id_xmss
debug2: pubkey_prepare: done
debug3: send packet: type 5
debug3: receive packet: type 7
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,rsa-sha2-256,ssh-rsa,ssh-dss>
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: Trying private key: C:\Users\framegrabber/.ssh/id_rsa
debug3: no such identity: C:\Users\framegrabber/.ssh/id_rsa: No such file or directory
debug1: Trying private key: C:\Users\framegrabber/.ssh/id_dsa
debug3: no such identity: C:\Users\framegrabber/.ssh/id_dsa: No such file or directory
debug1: Trying private key: C:\Users\framegrabber/.ssh/id_ecdsa
debug3: no such identity: C:\Users\framegrabber/.ssh/id_ecdsa: No such file or directory
debug1: Trying private key: C:\Users\framegrabber/.ssh/id_ed25519
debug3: no such identity: C:\Users\framegrabber/.ssh/id_ed25519: No such file or directory
debug1: Trying private key: C:\Users\framegrabber/.ssh/id_xmss
debug3: no such identity: C:\Users\framegrabber/.ssh/id_xmss: No such file or directory
debug2: we did not send a packet, disable method
debug3: authmethod_lookup password
debug3: remaining preferred: ,password
debug3: authmethod_is_enabled password
debug1: Next authentication method: password
debug3: failed to open file:C:/dev/tty error:3
debug1: read_passphrase: can't open /dev/tty: No such file or directory
[email protected]'s password:
from dropbear.
q000p
commented on July 3, 2024
The different network
C:\Users\framegrabber>ssh [email protected] -vvv
OpenSSH_for_Windows_8.1p1, LibreSSL 3.0.2
debug3: Failed to open file:C:/Users/framegrabber/.ssh/config error:2
debug3: Failed to open file:C:/ProgramData/ssh/ssh_config error:2
debug2: resolve_canonicalize: hostname 192.168.226.40 is address
debug2: ssh_connect_direct
debug1: Connecting to 192.168.226.40 [192.168.226.40] port 22.
debug1: Connection established.
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_rsa error:2
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_rsa.pub error:2
debug1: identity file C:\Users\framegrabber/.ssh/id_rsa type -1
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_rsa-cert error:2
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_rsa-cert.pub error:2
debug1: identity file C:\Users\framegrabber/.ssh/id_rsa-cert type -1
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_dsa error:2
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_dsa.pub error:2
debug1: identity file C:\Users\framegrabber/.ssh/id_dsa type -1
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_dsa-cert error:2
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_dsa-cert.pub error:2
debug1: identity file C:\Users\framegrabber/.ssh/id_dsa-cert type -1
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_ecdsa error:2
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_ecdsa.pub error:2
debug1: identity file C:\Users\framegrabber/.ssh/id_ecdsa type -1
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_ecdsa-cert error:2
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_ecdsa-cert.pub error:2
debug1: identity file C:\Users\framegrabber/.ssh/id_ecdsa-cert type -1
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_ed25519 error:2
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_ed25519.pub error:2
debug1: identity file C:\Users\framegrabber/.ssh/id_ed25519 type -1
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_ed25519-cert error:2
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_ed25519-cert.pub error:2
debug1: identity file C:\Users\framegrabber/.ssh/id_ed25519-cert type -1
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_xmss error:2
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_xmss.pub error:2
debug1: identity file C:\Users\framegrabber/.ssh/id_xmss type -1
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_xmss-cert error:2
debug3: Failed to open file:C:/Users/framegrabber/.ssh/id_xmss-cert.pub error:2
debug1: identity file C:\Users\framegrabber/.ssh/id_xmss-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_for_Windows_8.1
debug1: Remote protocol version 2.0, remote software version dropbear_2020.79
debug1: no match: dropbear_2020.79
debug2: fd 3 setting O_NONBLOCK
debug1: Authenticating to 192.168.226.40:22 as 'root'
debug3: hostkeys_foreach: reading file "C:\Users\framegrabber/.ssh/known_hosts"
debug3: record_hostkey: found key type ECDSA in file C:\Users\framegrabber/.ssh/known_hosts:4
debug3: load_hostkeys: loaded 1 keys from 192.168.226.40
debug3: Failed to open file:C:/Users/framegrabber/.ssh/known_hosts2 error:2
debug3: Failed to open file:C:/ProgramData/ssh/ssh_known_hosts error:2
debug3: Failed to open file:C:/ProgramData/ssh/ssh_known_hosts2 error:2
debug3: order_hostkeyalgs: prefer hostkeyalgs: [email protected],[email protected],[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521
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-group14-sha256,diffie-hellman-group14-sha1,ext-info-c
debug2: host key algorithms: [email protected],[email protected],[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,[email protected],[email protected],[email protected],[email protected],ssh-ed25519,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: curve25519-sha256,[email protected],ecdh-sha2-nistp521,ecdh-sha2-nistp384,ecdh-sha2-nistp256,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1,[email protected]
debug2: host key algorithms: ssh-ed25519,ecdsa-sha2-nistp256,rsa-sha2-256,ssh-rsa,ssh-dss
debug2: ciphers ctos: [email protected],aes128-ctr,aes256-ctr
debug2: ciphers stoc: [email protected],aes128-ctr,aes256-ctr
debug2: MACs ctos: hmac-sha1,hmac-sha2-256
debug2: MACs stoc: hmac-sha1,hmac-sha2-256
debug2: compression ctos: none
debug2: compression stoc: none
debug2: languages ctos:
debug2: languages stoc:
debug2: first_kex_follows 0
debug2: reserved 0
debug1: kex: algorithm: curve25519-sha256
debug1: kex: host key algorithm: ecdsa-sha2-nistp256
debug1: kex: server->client cipher: [email protected] MAC: compression: none
debug1: kex: client->server cipher: [email protected] MAC: compression: none
debug3: send packet: type 30
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug3: receive packet: type 31
debug1: Server host key: ecdsa-sha2-nistp256 SHA256:1Shqyzo7ByuUKYVK0aJ4UFncxEnSPiN+YAE618bfLYY
debug3: hostkeys_foreach: reading file "C:\Users\framegrabber/.ssh/known_hosts"
debug3: record_hostkey: found key type ECDSA in file C:\Users\framegrabber/.ssh/known_hosts:4
debug3: load_hostkeys: loaded 1 keys from 192.168.226.40
debug3: Failed to open file:C:/Users/framegrabber/.ssh/known_hosts2 error:2
debug3: Failed to open file:C:/ProgramData/ssh/ssh_known_hosts error:2
debug3: Failed to open file:C:/ProgramData/ssh/ssh_known_hosts2 error:2
debug1: Host '192.168.226.40' is known and matches the ECDSA host key.
debug1: Found key in C:\Users\framegrabber/.ssh/known_hosts:4
debug3: send packet: type 21
debug2: set_newkeys: mode 1
debug1: rekey out 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 in after 134217728 blocks
debug3: unable to connect to pipe \\.\pipe\openssh-ssh-agent, error: 2
debug1: pubkey_prepare: ssh_get_authentication_socket: No such file or directory
debug1: Will attempt key: C:\Users\framegrabber/.ssh/id_rsa
debug1: Will attempt key: C:\Users\framegrabber/.ssh/id_dsa
debug1: Will attempt key: C:\Users\framegrabber/.ssh/id_ecdsa
debug1: Will attempt key: C:\Users\framegrabber/.ssh/id_ed25519
debug1: Will attempt key: C:\Users\framegrabber/.ssh/id_xmss
debug2: pubkey_prepare: done
debug3: send packet: type 5
debug3: receive packet: type 7
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,rsa-sha2-256,ssh-rsa,ssh-dss>
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: Trying private key: C:\Users\framegrabber/.ssh/id_rsa
debug3: no such identity: C:\Users\framegrabber/.ssh/id_rsa: No such file or directory
debug1: Trying private key: C:\Users\framegrabber/.ssh/id_dsa
debug3: no such identity: C:\Users\framegrabber/.ssh/id_dsa: No such file or directory
debug1: Trying private key: C:\Users\framegrabber/.ssh/id_ecdsa
debug3: no such identity: C:\Users\framegrabber/.ssh/id_ecdsa: No such file or directory
debug1: Trying private key: C:\Users\framegrabber/.ssh/id_ed25519
debug3: no such identity: C:\Users\framegrabber/.ssh/id_ed25519: No such file or directory
debug1: Trying private key: C:\Users\framegrabber/.ssh/id_xmss
debug3: no such identity: C:\Users\framegrabber/.ssh/id_xmss: No such file or directory
debug2: we did not send a packet, disable method
debug3: authmethod_lookup password
debug3: remaining preferred: ,password
debug3: authmethod_is_enabled password
debug1: Next authentication method: password
debug3: failed to open file:C:/dev/tty error:3
debug1: read_passphrase: can't open /dev/tty: No such file or directory
[email protected]'s password:
from dropbear.
mkj
commented on July 3, 2024
OK, nothing obvious there.
Are there any other connections being made to the SSH server at the same time by chance? (Wondering if it's the pre-auth per-IP limit. Seems unlikely).
from dropbear.
q000p
commented on July 3, 2024
No. The client PC moved from one network to another.
from dropbear.
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