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Exit status 255 on sftp

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Old Unix and Linux 10-13-2008
GIC1986 GIC1986 is offline
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Unix or Linux Question Exit status 255 on sftp

HI guys

When i try SFTP to a machine using a user account whose entry in
/etc/passwd as follows

user:x:8005:508::/export/home/user:/bin/false

and i am not placed my keys over there i am using the password option in the sftp

Since the keys are not there it ask for the password

and the password method was sucess but i am getting following messages


debug1: ssh-userauth2 successfull: method password
debug1: fd 6 setting O_NONBLOCK
debug1: fd 7 IS O_NONBLOCK
debug1: channel 0: new [client-session]
debug1: send channel open 0
debug1: Entering interactive session.
debug1: client_init id 0 arg 0
debug1: Sending subsystem: sftp
debug1: channel 0: open confirm rwindow 0 rmax 16384
debug1: channel_input_channel_request: channel: 0 rcvd request for exit-status reply 0
debug1: cb_fn 2b77c cb_event 91
debug1: channel 0: rcvd eof
debug1: channel 0: output open->drain
debug1: channel 0: obuf empty
debug1: channel 0: output drain->closed
debug1: channel 0: close_write
debug1: channel 0: rcvd close
debug1: channel 0: input open->closed
debug1: channel 0: close_read
debug1: channel 0: send close
debug1: channel 0: full closed2
debug1: channel_free: channel 0: status: The following connections are open:
#0 client-session (t4 r0 i8/0 o128/0 fd -1/-1)

debug1: channel_free: channel 0: dettaching channel user
debug1: Transferred: stdin 0, stdout 0, stderr 0 bytes in 0.0 seconds
debug1: Bytes per second: stdin 0.0, stdout 0.0, stderr 0.0
debug1: Exit status 255
Couldn't read packet: Bad file number




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Hi all please suggest on this .... i need to trouble shoot on the issue urgently......
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At the first instance, you're using an invalid shell, provided /bin/false is inside the /etc/shells
user:x:8005:508::/export/home/user:/bin/false :/

whatever, can you post the outputs?
cat /etc/ssh/ssh_config
check if symbolic link exists between /bin -> /usr/bin

Last edited by incredible; 10-13-2008 at 10:11 AM..
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Quote:
Originally Posted by incredible View Post
At the first instance, you're using an invalid shell, provided /bin/false is inside the /etc/shells
user:x:8005:508::/export/home/user:/bin/false :/

whatever, can you post the outputs?
cat /etc/ssh/ssh_config
check if symbolic link exists between /bin -> /usr/bin

# Copyright (c) 2001 by Sun Microsystems, Inc.
# All rights reserved.
#
# ident "@(#)ssh_config 1.2 01/06/06 "
#
# This file provides defaults for ssh(1).
# The values can be changed in per-user configuration files $HOME/.ssh/config
# or on the command line of ssh(1).
# Configuration data is parsed as follows:
# 1. command line options
# 2. user-specific file
# 3. system-wide file /etc/ssh/ssh_config
#
# Any configuration value is only changed the first time it is set.
# host-specific definitions should be at the beginning of the
# configuration file, and defaults at the end.
# Example (matches compiled in defaults):
#
# Host *
# ForwardAgent no
# ForwardX11 no
# PubkeyAuthentication yes
# PasswordAuthentication yes
# FallBackToRsh no
# UseRsh no
# BatchMode no
# CheckHostIP yes
# StrictHostKeyChecking ask
# EscapeChar ~
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Why were those lines commented out? And try adding/ changing those in bold.
# Host *
# ForwardAgent no
# ForwardX11 no
RhostsAuthentication no
RhostsRSAAuthentication yes
RSAAuthentication yes

# PubkeyAuthentication yes
# PasswordAuthentication yes
# FallBackToRsh no
# UseRsh no
# BatchMode no
# CheckHostIP yes
# StrictHostKeyChecking no
# EscapeChar ~
Port 22
Protocol 2,1
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but the sftp was working for me with other user on the same machine ....

through port 22

only this user giving the prob.

i suspect about the user:x:8005:508::/export/home/user:/bin/false

but the it says

/bin/false disallows login with telnet/ssh it does not disallow ftp/sftp as you only run your shell when you direct login
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