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rddisd
PostPosted: Sun Apr 03, 2011 3:22 pm 
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Newbie

Joined: Sun Apr 03, 2011 3:03 pm
Posts: 3
Hello,

I have password-based SSH access set up to my Ubuntu 10.04 node and have no problem accessing the system this way. There are no firewall rules on my client or the server at the moment.
In /etc/ssh/sshd_config, the following line regarding sftp already existed, and I've confirmed that the sftp-server binary exists at the location specified:
Subsystem sftp /usr/lib/openssh/sftp-server

I cannot access the system remotely via sftp (using gftp, or command line, or Ubuntu 'Places' mechanism) or scp. However, I can access the system via sftp from the localhost:
$ sftp -oPort=1234 username@127.0.0.1
Connecting to 127.0.0.1...
username@127.0.0.1's password:
sftp>

When I attempt to connect remotely, I authenticate successfully, but the connection eventually times out (after several minutes):
$ sftp -oPort=1234 username@servername.tld
Connecting to servername.tld...
username@servername.tld's password:
Timeout, server not responding.
Couldn't read packet: Connection reset by peer

I set the sshd log level to DEBUG3. The log contents of an attempted remote connection are as follows:
Code:
Apr  3 19:14:11 servername sshd[3639]: debug2: mac_setup: found hmac-md5
Apr  3 19:14:11 servername sshd[3639]: debug3: mm_get_keystate: Waiting for second key
Apr  3 19:14:11 servername sshd[3639]: debug3: mm_newkeys_from_blob: 0xb875ccd8(118)
Apr  3 19:14:11 servername sshd[3639]: debug2: mac_setup: found hmac-md5
Apr  3 19:14:11 servername sshd[3639]: debug3: mm_get_keystate: Getting compression state
Apr  3 19:14:11 servername sshd[3639]: debug3: mm_get_keystate: Getting Network I/O buffers
Apr  3 19:14:11 servername sshd[3639]: debug3: mm_share_sync: Share sync
Apr  3 19:14:11 servername sshd[3639]: debug3: mm_share_sync: Share sync end
Apr  3 19:14:11 servername sshd[3639]: debug1: PAM: establishing credentials
Apr  3 19:14:11 servername sshd[3639]: debug3: PAM: opening session
Apr  3 19:14:11 servername sshd[3639]: pam_unix(sshd:session): session opened for user username by (uid=0)
Apr  3 19:14:12 servername sshd[3639]: debug3: PAM: sshpam_store_conv called with 1 messages
Apr  3 19:14:12 servername sshd[3639]: User child is on pid 3650
Apr  3 19:14:12 servername sshd[3639]: debug3: mm_request_receive entering
Apr  3 19:14:12 servername sshd[3650]: debug1: SELinux support disabled
Apr  3 19:14:12 servername sshd[3650]: debug1: PAM: establishing credentials
Apr  3 19:14:12 servername sshd[3650]: debug1: permanently_set_uid: 1000/1000
Apr  3 19:14:12 servername sshd[3650]: debug2: set_newkeys: mode 0
Apr  3 19:14:12 servername sshd[3650]: debug2: set_newkeys: mode 1
Apr  3 19:14:12 servername sshd[3650]: debug1: Entering interactive session for SSH2.
Apr  3 19:14:12 servername sshd[3650]: debug2: fd 5 setting O_NONBLOCK
Apr  3 19:14:12 servername sshd[3650]: debug2: fd 6 setting O_NONBLOCK
Apr  3 19:14:12 servername sshd[3650]: debug1: server_init_dispatch_20
Apr  3 19:14:12 servername sshd[3650]: debug1: server_input_channel_open: ctype session rchan 0 win 2097152 max 32768
Apr  3 19:14:12 servername sshd[3650]: debug1: input_session_request
Apr  3 19:14:12 servername sshd[3650]: debug1: channel 0: new [server-session]
Apr  3 19:14:12 servername sshd[3650]: debug2: session_new: allocate (allocated 0 max 10)
Apr  3 19:14:12 servername sshd[3650]: debug3: session_unused: session id 0 unused
Apr  3 19:14:12 servername sshd[3650]: debug1: session_new: session 0
Apr  3 19:14:12 servername sshd[3650]: debug1: session_open: channel 0
Apr  3 19:14:12 servername sshd[3650]: debug1: session_open: session 0: link with channel 0
Apr  3 19:14:12 servername sshd[3650]: debug1: server_input_channel_open: confirm session
Apr  3 19:14:12 servername sshd[3650]: debug1: server_input_global_request: rtype no-more-sessions@openssh.com want_reply 0
Apr  3 19:14:12 servername sshd[3650]: debug3: Wrote 48 bytes for a total of 1887
Apr  3 19:14:12 servername sshd[3650]: debug1: server_input_channel_req: channel 0 request env reply 0
Apr  3 19:14:12 servername sshd[3650]: debug1: session_by_channel: session 0 channel 0
Apr  3 19:14:12 servername sshd[3650]: debug1: session_input_channel_req: session 0 req env
Apr  3 19:14:12 servername sshd[3650]: debug2: Setting env 0: LANG=en_US.utf8
Apr  3 19:14:12 servername sshd[3650]: debug1: server_input_channel_req: channel 0 request subsystem reply 1
Apr  3 19:14:12 servername sshd[3650]: debug1: session_by_channel: session 0 channel 0
Apr  3 19:14:12 servername sshd[3650]: debug1: session_input_channel_req: session 0 req subsystem
Apr  3 19:14:12 servername sshd[3650]: subsystem request for sftp
Apr  3 19:14:12 servername sshd[3650]: debug1: subsystem: exec() /usr/lib/openssh/sftp-server
Apr  3 19:14:12 servername sshd[3650]: debug2: fd 3 setting TCP_NODELAY
Apr  3 19:14:12 servername sshd[3650]: debug2: fd 9 setting O_NONBLOCK
Apr  3 19:14:12 servername sshd[3650]: debug2: fd 8 setting O_NONBLOCK
Apr  3 19:14:12 servername sshd[3650]: debug3: Wrote 80 bytes for a total of 1967
Apr  3 19:14:12 servername sshd[3651]: debug3: Copy environment: PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:
/usr/games
Apr  3 19:14:12 servername sshd[3651]: debug3: Copy environment: LANG=en_US.UTF-8
Apr  3 19:14:12 servername sshd[3651]: debug3: channel 0: close_fds r -1 w -1 e -1 c -1


Any ideas what may be causing this issue?
I'd greatly appreciate any feedback.
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obs
 Post subject:
PostPosted: Sun Apr 03, 2011 4:58 pm 
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Joined: Sun Mar 07, 2010 7:47 pm
Posts: 1970
Website: http://www.rwky.net
Location: Earth
What does sftp with -vvv flags show? Is it just sftp that doesn't work remotely or does ssh fail as well?

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rddisd
 Post subject:
PostPosted: Sun Apr 03, 2011 5:49 pm 
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Newbie

Joined: Sun Apr 03, 2011 3:03 pm
Posts: 3
obs wrote:
What does sftp with -vvv flags show? Is it just sftp that doesn't work remotely or does ssh fail as well?


Hello - ssh works fine. The -vvv client output for a successful ssh connection and an unsuccessful sftp connection are below. They are very similar, but towards the end the ssh output includes:
debug2: PTY allocation request accepted on channel 0
debug2: shell request accepted on channel 0
the sftp output does not include a "request accepted" message like this.

ssh -vvv:
Code:
user@client:~$ ssh -vvv -p 1234 username@servername.tld
OpenSSH_5.3p1 Debian-3ubuntu5, OpenSSL 0.9.8k 25 Mar 2009
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug2: ssh_connect: needpriv 0
debug1: Connecting to servername.tld [123.456.789.123] port 1234.
debug1: Connection established.
debug1: identity file /home/username/.ssh/identity type -1
debug1: identity file /home/username/.ssh/id_rsa type -1
debug1: identity file /home/username/.ssh/id_dsa type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.3p1 Debian-3ubuntu6
debug1: match: OpenSSH_5.3p1 Debian-3ubuntu6 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.3p1 Debian-3ubuntu5
debug2: fd 3 setting O_NONBLOCK
debug1: SSH2_MSG_KEXINIT sent
debug3: Wrote 792 bytes for a total of 831
debug1: SSH2_MSG_KEXINIT received
debug2: kex_parse_kexinit: diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: ssh-rsa,ssh-dss
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,zlib@openssh.com,zlib
debug2: kex_parse_kexinit: none,zlib@openssh.com,zlib
debug2: kex_parse_kexinit: 
debug2: kex_parse_kexinit: 
debug2: kex_parse_kexinit: first_kex_follows 0 
debug2: kex_parse_kexinit: reserved 0 
debug2: kex_parse_kexinit: diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: ssh-rsa,ssh-dss
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,zlib@openssh.com
debug2: kex_parse_kexinit: none,zlib@openssh.com
debug2: kex_parse_kexinit: 
debug2: kex_parse_kexinit: 
debug2: kex_parse_kexinit: first_kex_follows 0 
debug2: kex_parse_kexinit: reserved 0 
debug2: mac_setup: found hmac-md5
debug1: kex: server->client aes128-ctr hmac-md5 none
debug2: mac_setup: found hmac-md5
debug1: kex: client->server aes128-ctr hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug3: Wrote 24 bytes for a total of 855
debug2: dh_gen_key: priv key bits set: 132/256
debug2: bits set: 524/1024
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug3: Wrote 144 bytes for a total of 999
debug3: put_host_port: [123.456.789.123]:1234
debug3: put_host_port: [servername.tld]:1234
debug3: check_host_in_hostfile: filename /home/username/.ssh/known_hosts
debug3: check_host_in_hostfile: match line 34
debug3: check_host_in_hostfile: filename /home/username/.ssh/known_hosts
debug3: check_host_in_hostfile: match line 3
debug1: Host '[servername.tld]:1234' is known and matches the RSA host key.
debug1: Found key in /home/username/.ssh/known_hosts:34
debug2: bits set: 520/1024
debug1: ssh_rsa_verify: signature correct
debug2: kex_derive_keys
debug2: set_newkeys: mode 1
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug3: Wrote 16 bytes for a total of 1015
debug2: set_newkeys: mode 0
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug3: Wrote 48 bytes for a total of 1063
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug2: key: /home/username/.ssh/identity ((nil))
debug2: key: /home/username/.ssh/id_rsa ((nil))
debug2: key: /home/username/.ssh/id_dsa ((nil))
debug3: Wrote 64 bytes for a total of 1127
debug1: Authentications that can continue: publickey,password
debug3: start over, passed a different list publickey,password
debug3: preferred gssapi-keyex,gssapi-with-mic,gssapi,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: /home/username/.ssh/identity
debug3: no such identity: /home/username/.ssh/identity
debug1: Trying private key: /home/username/.ssh/id_rsa
debug3: no such identity: /home/username/.ssh/id_rsa
debug1: Trying private key: /home/username/.ssh/id_dsa
debug3: no such identity: /home/username/.ssh/id_dsa
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
username@servername.tld's password: 
debug3: packet_send2: adding 48 (len 61 padlen 19 extra_pad 64)
debug2: we sent a password packet, wait for reply
debug3: Wrote 144 bytes for a total of 1271
debug1: Authentication succeeded (password).
debug1: channel 0: new [client-session]
debug3: ssh_session2_open: channel_new: 0
debug2: channel 0: send open
debug1: Requesting no-more-sessions@openssh.com
debug1: Entering interactive session.
debug3: Wrote 128 bytes for a total of 1399
debug2: callback start
debug2: client_session2_setup: id 0
debug2: channel 0: request pty-req confirm 1
debug1: Sending environment.
debug3: Ignored env ORBIT_SOCKETDIR
debug3: Ignored env SSH_AGENT_PID
debug3: Ignored env TERM
debug3: Ignored env SHELL
debug3: Ignored env XDG_SESSION_COOKIE
debug3: Ignored env WINDOWID
debug3: Ignored env GNOME_KEYRING_CONTROL
debug3: Ignored env GTK_MODULES
debug3: Ignored env USER
debug3: Ignored env LS_COLORS
debug3: Ignored env SSH_AUTH_SOCK
debug3: Ignored env DEFAULTS_PATH
debug3: Ignored env SESSION_MANAGER
debug3: Ignored env USERNAME
debug3: Ignored env XDG_CONFIG_DIRS
debug3: Ignored env DESKTOP_SESSION
debug3: Ignored env PATH
debug3: Ignored env PWD
debug3: Ignored env GDM_KEYBOARD_LAYOUT
debug1: Sending env LANG = en_US.utf8
debug2: channel 0: request env confirm 0
debug3: Ignored env GNOME_KEYRING_PID
debug3: Ignored env MANDATORY_PATH
debug3: Ignored env GDM_LANG
debug3: Ignored env GDMSESSION
debug3: Ignored env SPEECHD_PORT
debug3: Ignored env SHLVL
debug3: Ignored env HOME
debug3: Ignored env GNOME_DESKTOP_SESSION_ID
debug3: Ignored env LOGNAME
debug3: Ignored env XDG_DATA_DIRS
debug3: Ignored env DBUS_SESSION_BUS_ADDRESS
debug3: Ignored env LESSOPEN
debug3: Ignored env DISPLAY
debug3: Ignored env LESSCLOSE
debug3: Ignored env XAUTHORITY
debug3: Ignored env COLORTERM
debug3: Ignored env _
debug2: channel 0: request shell confirm 1
debug2: fd 3 setting TCP_NODELAY
debug2: callback done
debug2: channel 0: open confirm rwindow 0 rmax 32768
debug3: Wrote 448 bytes for a total of 1847
debug2: channel_input_status_confirm: type 99 id 0
debug2: PTY allocation request accepted on channel 0
debug2: channel 0: rcvd adjust 2097152
debug2: channel_input_status_confirm: type 99 id 0
debug2: shell request accepted on channel 0
Linux servername 2.6.38-linode31 #1 SMP Mon Mar 21 21:22:33 UTC 2011 i686 GNU/Linux
Ubuntu 10.04.2 LTS
Welcome to Ubuntu!
 * Documentation:  https://help.ubuntu.com/
Last login: Sun Apr  3 18:32:26 2011 from ...
username@server:~$ debug2: client_check_window_change: changed
debug2: channel 0: request window-change confirm 0
debug3: Wrote 64 bytes for a total of 1911
...


sftp -vvv:
Code:
user@client:~$ sftp -vvv -oPort=1234 username@server.tld
OpenSSH_5.3p1 Debian-3ubuntu5, OpenSSL 0.9.8k 25 Mar 2009
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug2: ssh_connect: needpriv 0
debug1: Connecting to server.tld [123.456.789.123] port 1234.
debug1: Connection established.
debug1: identity file /home/username/.ssh/id_rsa type -1
debug1: identity file /home/username/.ssh/id_dsa type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.3p1 Debian-3ubuntu6
debug1: match: OpenSSH_5.3p1 Debian-3ubuntu6 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.3p1 Debian-3ubuntu5
debug2: fd 3 setting O_NONBLOCK
debug1: SSH2_MSG_KEXINIT sent
debug3: Wrote 792 bytes for a total of 831
debug1: SSH2_MSG_KEXINIT received
debug2: kex_parse_kexinit: diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: ssh-rsa,ssh-dss
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,zlib@openssh.com,zlib
debug2: kex_parse_kexinit: none,zlib@openssh.com,zlib
debug2: kex_parse_kexinit: 
debug2: kex_parse_kexinit: 
debug2: kex_parse_kexinit: first_kex_follows 0 
debug2: kex_parse_kexinit: reserved 0 
debug2: kex_parse_kexinit: diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: ssh-rsa,ssh-dss
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,zlib@openssh.com
debug2: kex_parse_kexinit: none,zlib@openssh.com
debug2: kex_parse_kexinit: 
debug2: kex_parse_kexinit: 
debug2: kex_parse_kexinit: first_kex_follows 0 
debug2: kex_parse_kexinit: reserved 0 
debug2: mac_setup: found hmac-md5
debug1: kex: server->client aes128-ctr hmac-md5 none
debug2: mac_setup: found hmac-md5
debug1: kex: client->server aes128-ctr hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug3: Wrote 24 bytes for a total of 855
debug2: dh_gen_key: priv key bits set: 132/256
debug2: bits set: 507/1024
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug3: Wrote 144 bytes for a total of 999
debug3: put_host_port: [123.456.789.123]:1234
debug3: put_host_port: [server.tld]:1234
debug3: check_host_in_hostfile: filename /home/username/.ssh/known_hosts
debug3: check_host_in_hostfile: match line 34
debug3: check_host_in_hostfile: filename /home/username/.ssh/known_hosts
debug3: check_host_in_hostfile: match line 3
debug1: Host '[server.tld]:1234' is known and matches the RSA host key.
debug1: Found key in /home/username/.ssh/known_hosts:34
debug2: bits set: 510/1024
debug1: ssh_rsa_verify: signature correct
debug2: kex_derive_keys
debug2: set_newkeys: mode 1
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug3: Wrote 16 bytes for a total of 1015
debug2: set_newkeys: mode 0
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug3: Wrote 48 bytes for a total of 1063
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug2: key: /home/username/.ssh/id_rsa ((nil))
debug2: key: /home/username/.ssh/id_dsa ((nil))
debug3: Wrote 64 bytes for a total of 1127
debug1: Authentications that can continue: publickey,password
debug3: start over, passed a different list publickey,password
debug3: preferred gssapi-keyex,gssapi-with-mic,gssapi,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: /home/username/.ssh/id_rsa
debug3: no such identity: /home/username/.ssh/id_rsa
debug1: Trying private key: /home/username/.ssh/id_dsa
debug3: no such identity: /home/username/.ssh/id_dsa
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
username@server.tld's password: 
debug3: packet_send2: adding 48 (len 61 padlen 19 extra_pad 64)
debug2: we sent a password packet, wait for reply
debug3: Wrote 144 bytes for a total of 1271
debug1: Authentication succeeded (password).
debug2: fd 4 setting O_NONBLOCK
debug3: fd 5 is O_NONBLOCK
debug1: channel 0: new [client-session]
debug3: ssh_session2_open: channel_new: 0
debug2: channel 0: send open
debug1: Requesting no-more-sessions@openssh.com
debug1: Entering interactive session.
debug3: Wrote 128 bytes for a total of 1399
debug2: callback start
debug2: client_session2_setup: id 0
debug1: Sending environment.
debug3: Ignored env ORBIT_SOCKETDIR
debug3: Ignored env SSH_AGENT_PID
debug3: Ignored env TERM
debug3: Ignored env SHELL
debug3: Ignored env XDG_SESSION_COOKIE
debug3: Ignored env WINDOWID
debug3: Ignored env GNOME_KEYRING_CONTROL
debug3: Ignored env GTK_MODULES
debug3: Ignored env USER
debug3: Ignored env LS_COLORS
debug3: Ignored env SSH_AUTH_SOCK
debug3: Ignored env DEFAULTS_PATH
debug3: Ignored env SESSION_MANAGER
debug3: Ignored env USERNAME
debug3: Ignored env XDG_CONFIG_DIRS
debug3: Ignored env DESKTOP_SESSION
debug3: Ignored env PATH
debug3: Ignored env PWD
debug3: Ignored env GDM_KEYBOARD_LAYOUT
debug1: Sending env LANG = en_US.utf8
debug2: channel 0: request env confirm 0
debug3: Ignored env GNOME_KEYRING_PID
debug3: Ignored env MANDATORY_PATH
debug3: Ignored env GDM_LANG
debug3: Ignored env GDMSESSION
debug3: Ignored env SPEECHD_PORT
debug3: Ignored env SHLVL
debug3: Ignored env HOME
debug3: Ignored env GNOME_DESKTOP_SESSION_ID
debug3: Ignored env LOGNAME
debug3: Ignored env XDG_DATA_DIRS
debug3: Ignored env DBUS_SESSION_BUS_ADDRESS
debug3: Ignored env LESSOPEN
debug3: Ignored env DISPLAY
debug3: Ignored env LESSCLOSE
debug3: Ignored env XAUTHORITY
debug3: Ignored env COLORTERM
debug3: Ignored env _
debug1: Sending subsystem: sftp
debug2: channel 0: request subsystem confirm 1
debug2: fd 3 setting TCP_NODELAY
debug2: callback done
debug2: channel 0: open confirm rwindow 0 rmax 32768
debug3: Wrote 128 bytes for a total of 1527
debug3: Wrote 64 bytes for a total of 1591
debug3: Wrote 64 bytes for a total of 1655
debug3: Wrote 64 bytes for a total of 1719
Timeout, server not responding.
Couldn't read packet: Connection reset by peer
user@client:~$


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obs
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PostPosted: Sun Apr 03, 2011 6:01 pm 
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Ok not sure why but for some reason it's having trouble writing the last few bits of the connection bytes.

A few things to try if you haven't already.

1) Restart the ssh daemon (I assume you've done that but just throwing it out there)
2) Set the Subsystem sftp /usr/lib/openssh/sftp-server to Subsystem sftp internal-sftp

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rddisd
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PostPosted: Sun Apr 03, 2011 7:23 pm 
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Joined: Sun Apr 03, 2011 3:03 pm
Posts: 3
obs wrote:
2) Set the Subsystem sftp /usr/lib/openssh/sftp-server to Subsystem sftp internal-sftp


Wow - that did it! Thank you very much for that suggestion. It hadn't occurred to me to try that, even though I'd seen 'internal-sftp' listed in others' posts.

I have no idea why this fixes the problem (as I mentioned before /usr/lib/openssh/sftp-server exists, and it's executable), but it's hugely helpful, regardless.

Thanks again!
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