Fail to connect / connection reset

[bgola]

"OpenSSH for Windows" version
v1.0.0.0-Beta

Server OperatingSystem
Windows Server 2016 Standard

Client OperatingSystem
ArchLinux up-to-date

What is failing

Trying to connect (ssh user@host -p 2233) fails with:

$ ssh -vvv [email protected] -p 2233
OpenSSH_7.6p1, OpenSSL 1.1.0g  2 Nov 2017
debug1: Reading configuration data /home/bgola/.ssh/config
debug1: Reading configuration data /etc/ssh/ssh_config
debug2: resolving "172.20.1.100" port 2233
debug2: ssh_connect_direct: needpriv 0
debug1: Connecting to 172.20.1.100 [172.20.1.100] port 2233.
debug1: Connection established.
debug1: identity file /home/bgola/.ssh/id_rsa type 0
debug1: key_load_public: No such file or directory
debug1: identity file /home/bgola/.ssh/id_rsa-cert type -1
debug1: identity file /home/bgola/.ssh/id_dsa type 1
debug1: key_load_public: No such file or directory
debug1: identity file /home/bgola/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/bgola/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/bgola/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/bgola/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/bgola/.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_7.6
debug1: match: OpenSSH_7.6 pat OpenSSH* compat 0x04000000
debug2: fd 3 setting O_NONBLOCK
debug1: Authenticating to 172.20.1.100:2233 as 'chevah'
debug3: put_host_port: [172.20.1.100]:2233
debug3: hostkeys_foreach: reading file "/home/bgola/.ssh/known_hosts"
debug3: send packet: type 20
debug1: SSH2_MSG_KEXINIT sent
Connection reset by 172.20.1.100 port 2233

The sshd logs show:

>sshd.exe -ddd
debug2: load_server_config: filename __PROGRAMDATA__\\ssh/sshd_config
debug2: load_server_config: done config len = 179
debug2: parse_server_config: config __PROGRAMDATA__\\ssh/sshd_config len 179
debug3: __PROGRAMDATA__\\ssh/sshd_config:9 setting Port 2233
debug3: __PROGRAMDATA__\\ssh/sshd_config:20 setting RekeyLimit 1K none
debug3: __PROGRAMDATA__\\ssh/sshd_config:38 setting AuthorizedKeysFile .ssh/authorized_keys
debug3: __PROGRAMDATA__\\ssh/sshd_config:76 setting Subsystem sftp      sftp-server.exe
debug1: sshd version OpenSSH_7.6, LibreSSL 2.5.3
debug1: private host key #0: ssh-rsa SHA256:483Ns8/Ovjg5JbTjOufkx0OiG7K0db70xLRRFJtG8Oc
debug1: private host key #1: ssh-dss SHA256:FN9Aa12wQH/hD9YJgsyJlTfG9vfr2Z3HeNhToPonOTg
debug1: private host key #2: ecdsa-sha2-nistp256 SHA256:rMM3tp7SweIu3c92vQKWhO0TvqxjqnBWnwmPTqbLKVQ
debug1: private host key #3: ssh-ed25519 SHA256:9srNl/RdQHNv18jXC6tLvrJemLp3rcs6ETUVpZzudrI
debug1: rexec_argv[0]='sshd.exe'
debug1: rexec_argv[1]='-ddd'
debug2: fd 3 setting O_NONBLOCK
debug3: sock_set_v6only: set socket 3 IPV6_V6ONLY
debug1: Bind to port 2233 on ::.
Server listening on :: port 2233.
debug2: fd 4 setting O_NONBLOCK
debug1: Bind to port 2233 on 0.0.0.0.
Server listening on 0.0.0.0 port 2233.
debug3: fd 5 is not O_NONBLOCK
debug1: Server will not fork when running in debugging mode.
debug3: send_rexec_state: entering fd = 8 config len 179
debug3: ssh_msg_send: type 0
debug3: send_rexec_state: done
Connection from 172.20.2.245 port 48512 on 172.20.1.100 port 2233
debug1: Client protocol version 2.0; client software version OpenSSH_7.6
debug1: match: OpenSSH_7.6 pat OpenSSH* compat 0x04000000
debug1: Local version string SSH-2.0-OpenSSH_7.6
debug2: fd 5 setting O_NONBLOCK
debug3: LsaLogonUser succeeded
debug3: spawning "C:\\Users\\test\\OpenSSH-Win64\\OpenSSH-Win64\\sshd.exe" "-ddd" "-y"
debug3: send_rexec_state: entering fd = 4 config len 179
debug3: ssh_msg_send: type 0
debug3: write ERROR from cb(2):232, io:000001D9D08EDBB0
ssh_msg_send: write
send_rexec_state: ssh_msg_send failed
debug1: do_cleanup

Let me know if I can provide more information.

Thanks

[bagajjal]

This might be related to permission issue. please provide "read, execute" permission for "users" account to "C:\Users\test\OpenSSH-Win64\OpenSSH-Win64"

[bgola]

thanks, this works.

[matt-richardson]

Can we re-open this? I just spent a day fighting with this.

Can it at least spit out a warning "insufficient write privileges to directory xyz"?