Problem: cannot connect with sftp but can connect with filezilla.
Config:
sshd_config
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Port 22
Port 3333
Protocol 2
AllowUsers me you another
PermitRootLogin no
PasswordAuthentication no
UsePAM yes
Subsystem sftp /usr/lib/misc/sftp-server
Match Group users
ChrootDirectory /home/%u
X11Forwarding no
AllowTcpForwarding no
ForceCommand internal-sftp
But with command line sftp client:
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sftp -oPort=3333 -s sftp_server me@myhost:folder/
Connecting to myhost...
Password:
subsystem request failed on channel 0
Couldn't read packet: Connection reset by peer
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sftp -oPort=3333 -v me@myhost
Connecting to myhost...
OpenSSH_5.1p1, OpenSSL 0.9.8j 07 Jan 2009
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Connecting to myhost [xxx.xxx.xxx.xxx] port 3333.
debug1: Connection established.
debug1: identity file /home/me/.ssh/id_rsa type 1
debug1: identity file /home/me/.ssh/id_dsa type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.1
debug1: match: OpenSSH_5.1 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.1
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-cbc hmac-md5 none
debug1: kex: client->server aes128-cbc hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug1: Host '[myhost]:3333' is known and matches the RSA host key.
debug1: Found key in /home/me/.ssh/known_hosts:50
debug1: ssh_rsa_verify: signature correct
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,keyboard-interactive
debug1: Next authentication method: publickey
debug1: Offering public key: /home/me/.ssh/id_rsa
debug1: Authentications that can continue: publickey,keyboard-interactive
debug1: Trying private key: /home/me/.ssh/id_dsa
debug1: Next authentication method: keyboard-interactive
Password:
debug1: Authentication succeeded (keyboard-interactive).
debug1: channel 0: new [client-session]
debug1: Requesting no-more-sessions@openssh.com
debug1: Entering interactive session.
debug1: Sending subsystem: sftp
subsystem request failed on channel 0
Couldn't read packet: Connection reset by peer
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debug1: sshd version OpenSSH_5.1p1
debug1: read PEM private key done: type RSA
debug1: private host key: #0 type 1 RSA
debug1: read PEM private key done: type DSA
debug1: private host key: #1 type 2 DSA
debug1: rexec_argv[0]='/usr/sbin/sshd'
debug1: rexec_argv[1]='-d'
debug1: Bind to port 3333 on ::.
Server listening on :: port 3333.
debug1: Bind to port 3333 on 0.0.0.0.
Server listening on 0.0.0.0 port 3333.
debug1: Bind to port 22 on ::.
Server listening on :: port 22.
debug1: Bind to port 22 on 0.0.0.0.
Server listening on 0.0.0.0 port 22.
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: 3, 3
Connection from xxx.xxx.xxx.xxx port 41695
debug1: Client protocol version 2.0; client software version OpenSSH_5.1
debug1: match: OpenSSH_5.1 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.1
debug1: permanently_set_uid: 22/22
debug1: list_hostkey_types: ssh-rsa,ssh-dss
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: client->server aes128-cbc hmac-md5 none
debug1: kex: server->client aes128-cbc hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST received
debug1: SSH2_MSG_KEX_DH_GEX_GROUP sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_INIT
debug1: SSH2_MSG_KEX_DH_GEX_REPLY sent
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: KEX done
debug1: userauth-request for user me service ssh-connection method none
debug1: attempt 0 failures 0
debug1: user me matched group list users at line 118
debug1: PAM: initializing for "me"
debug1: PAM: setting PAM_RHOST to "connectinghostname"
debug1: PAM: setting PAM_TTY to "ssh"
debug1: userauth-request for user me service ssh-connection method publickey
debug1: attempt 1 failures 0
debug1: test whether pkalg/pkblob are acceptable
debug1: temporarily_use_uid: 1001/100 (e=0/0)
debug1: trying public key file //.ssh/authorized_keys
debug1: restore_uid: 0/0
debug1: temporarily_use_uid: 1001/100 (e=0/0)
debug1: trying public key file //.ssh/authorized_keys2
debug1: restore_uid: 0/0
Failed publickey for me from xxx.xxx.xxx.xxx port 41695 ssh2
debug1: userauth-request for user me service ssh-connection method keyboard-interactive
debug1: attempt 2 failures 1
debug1: keyboard-interactive devs
debug1: auth2_challenge: user=me devs=
debug1: kbdint_alloc: devices 'pam'
debug1: auth2_challenge_start: trying authentication method 'pam'
Postponed keyboard-interactive for me from xxx.xxx.xxx.xxx port 41695 ssh2
debug1: do_pam_account: called
debug1: PAM: num PAM env strings 0
Postponed keyboard-interactive/pam for me from xxx.xxx.xxx.xxx port 41695 ssh2
debug1: do_pam_account: called
Accepted keyboard-interactive/pam for me from xxx.xxx.xxx.xxx port 41695 ssh2
debug1: monitor_child_preauth: me has been authenticated by privileged process
debug1: PAM: establishing credentials
User child is on pid 2804
debug1: PAM: establishing credentials
Changed root directory to "/home/me"
debug1: permanently_set_uid: 1001/100
debug1: Entering interactive session for SSH2.
debug1: server_init_dispatch_20
debug1: server_input_channel_open: ctype session rchan 0 win 2097152 max 32768
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 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 subsystem reply 1
debug1: session_by_channel: session 0 channel 0
debug1: session_input_channel_req: session 0 req subsystem
subsystem request for sftp
subsystem: cannot stat /usr/lib/misc/sftp-server: No such file or directory
subsystem request for sftp failed, subsystem not found
Connection closed by xxx.xxx.xxx.xxx
debug1: channel 0: free: server-session, nchannels 1
debug1: session_close: session 0 pid 0
debug1: do_cleanup
Transferred: sent 1928, received 1760 bytes
Closing connection to xxx.xxx.xxx.xxx port 41695
debug1: PAM: cleanup
debug1: PAM: deleting credentials
debug1: PAM: closing session
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subsystem request for sftp
subsystem: cannot stat /usr/lib/misc/sftp-server: No such file or directory
subsystem request for sftp failed, subsystem not foundCode: Select all
ls -la /usr/lib/misc/sftp-server
-rwxr-xr-x 1 root root 42568 2009-01-31 08:37 /usr/lib/misc/sftp-server
EDIT:
Sshd in debugger mode while connecting with filezilla:
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debug1: sshd version OpenSSH_5.1p1
debug1: read PEM private key done: type RSA
debug1: private host key: #0 type 1 RSA
debug1: read PEM private key done: type DSA
debug1: private host key: #1 type 2 DSA
debug1: rexec_argv[0]='/usr/sbin/sshd'
debug1: rexec_argv[1]='-d'
debug1: Bind to port 3333 on ::.
Server listening on :: port 3333.
debug1: Bind to port 3333 on 0.0.0.0.
Server listening on 0.0.0.0 port 3333.
debug1: Bind to port 22 on ::.
Server listening on :: port 22.
debug1: Bind to port 22 on 0.0.0.0.
Server listening on 0.0.0.0 port 22.
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: 3, 3
Connection from xxx.xxx.xxx.xxx port 47529
debug1: Client protocol version 2.0; client software version PuTTY_Local:_Feb__3_2009_11:16:49
debug1: no match: PuTTY_Local:_Feb__3_2009_11:16:49
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.1
debug1: permanently_set_uid: 22/22
debug1: list_hostkey_types: ssh-rsa,ssh-dss
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: client->server aes256-ctr hmac-sha1 none
debug1: kex: server->client aes256-ctr hmac-sha1 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST_OLD received
debug1: SSH2_MSG_KEX_DH_GEX_GROUP sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_INIT
debug1: SSH2_MSG_KEX_DH_GEX_REPLY sent
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: KEX done
debug1: userauth-request for user me service ssh-connection method none
debug1: attempt 0 failures 0
debug1: user me matched group list users at line 118
debug1: PAM: initializing for "me"
debug1: PAM: setting PAM_RHOST to "connectinghostname"
debug1: PAM: setting PAM_TTY to "ssh"
debug1: userauth-request for user me service ssh-connection method publickey
debug1: attempt 1 failures 0
debug1: test whether pkalg/pkblob are acceptable
debug1: temporarily_use_uid: 1001/100 (e=0/0)
debug1: trying public key file //.ssh/authorized_keys
debug1: restore_uid: 0/0
debug1: temporarily_use_uid: 1001/100 (e=0/0)
debug1: trying public key file //.ssh/authorized_keys2
debug1: restore_uid: 0/0
Failed publickey for me from xxx.xxx.xxx.xxx port 47529 ssh2
debug1: userauth-request for user me service ssh-connection method keyboard-interactive
debug1: attempt 2 failures 1
debug1: keyboard-interactive devs
debug1: auth2_challenge: user=me devs=
debug1: kbdint_alloc: devices 'pam'
debug1: auth2_challenge_start: trying authentication method 'pam'
Postponed keyboard-interactive for me from xxx.xxx.xxx.xxx port 47529 ssh2
debug1: do_pam_account: called
debug1: PAM: num PAM env strings 0
Postponed keyboard-interactive/pam for me from xxx.xxx.xxx.xxx port 47529 ssh2
debug1: do_pam_account: called
Accepted keyboard-interactive/pam for me from xxx.xxx.xxx.xxx port 47529 ssh2
debug1: monitor_child_preauth: me has been authenticated by privileged process
debug1: PAM: establishing credentials
User child is on pid 13782
debug1: PAM: establishing credentials
Changed root directory to "/home/me"
debug1: permanently_set_uid: 1001/100
debug1: Entering interactive session for SSH2.
debug1: server_init_dispatch_20
debug1: server_input_channel_open: ctype session rchan 256 win 2147483647 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 0
debug1: server_input_channel_open: confirm session
debug1: server_input_channel_req: channel 0 request simple@putty.projects.tartarus.org reply 0
debug1: session_by_channel: session 0 channel 0
debug1: session_input_channel_req: session 0 req simple@putty.projects.tartarus.org
debug1: server_input_channel_req: channel 0 request subsystem reply 1
debug1: session_by_channel: session 0 channel 0
debug1: session_input_channel_req: session 0 req subsystem
subsystem request for sftp
subsystem: cannot stat /usr/lib/misc/sftp-server: No such file or directory
subsystem request for sftp failed, subsystem not found
debug1: server_input_channel_req: channel 0 request exec reply 1
debug1: session_by_channel: session 0 channel 0
debug1: session_input_channel_req: session 0 req exec
debug1: Forced command (config) 'internal-sftp'
Connection closed by xxx.xxx.xxx.xxx
debug1: channel 0: free: server-session, nchannels 1
debug1: session_close: session 0 pid 13783
debug1: do_cleanup
Transferred: sent 3656, received 3200 bytes
Closing connection to xxx.xxx.xxx.xxx port 47529
debug1: PAM: cleanup
debug1: PAM: deleting credentials
debug1: PAM: closing sessionAfter experimenting with sftp options it turned out that sftp needs an subsystem argument.
Argument should start with slash and it does not matter what it is.
Eg:
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sftp -oPort=3333 -s /whatever me@myhost
Connecting to myhost...
Password:
sftp> pwd
Remote working directory: /
sftp> bye
Weird.
