从日志看，是客户端不理解服务器的输出，才主动关闭的：
Jul 6 10:00:50 atom sshd[4045]: Received disconnect from 192.168.0.231: 11: disconnected by user 你有没有试试我这个方法呢？ > 那么可以在 /root/.bashrc 开始增加： > # If not running interactively, don't do anything > [ -z "$PS1" ] && return 2010/7/6 higeon <[email protected]> > > 应该跟sftp的版本没有关系。 > 不管我用windows下的winscp还是用linux下的sftp，root都没法连上去。 > 输入密码之后就得到Connection closed的信息。 > 我觉得一定是和.bashrc中的自动startx那段有关系。注释掉之后就可以sftp登录。 > 难道sftp用的是/dev/tty1？ > > >> 在/root/.bashrc中添加了 > > >> # Auto start X > >> if [ -z "$DISPLAY" ] && [ $(tty) = /dev/tty1 ]; then > >> while true > >> do > >> startx > >> done > >> fi > > 下面是DEBUG模式下的auth.log输出。 > > Jul 6 10:00:43 atom sshd[4029]: debug1: Forked child 4045. > Jul 6 10:00:43 atom sshd[4045]: debug1: rexec start in 5 out 5 newsock 5 > pipe 7 sock 8 > Jul 6 10:00:43 atom sshd[4045]: debug1: inetd sockets after dupping: 3, 3 > Jul 6 10:00:43 atom sshd[4045]: Connection from 192.168.0.231 port 46875 > Jul 6 10:00:43 atom sshd[4045]: debug1: Client protocol version 2.0; > client software version OpenSSH_5.3p1 Debian-3ubuntu4 > Jul 6 10:00:43 atom sshd[4045]: debug1: match: OpenSSH_5.3p1 > Debian-3ubuntu4 pat OpenSSH* > Jul 6 10:00:43 atom sshd[4045]: debug1: Enabling compatibility mode for > protocol 2.0 > Jul 6 10:00:43 atom sshd[4045]: debug1: Local version string > SSH-2.0-OpenSSH_5.1p1 Debian-5 > Jul 6 10:00:48 atom sshd[4045]: debug1: PAM: initializing for "root" > Jul 6 10:00:48 atom sshd[4045]: debug1: PAM: setting PAM_RHOST to > "192.168.0.231" > Jul 6 10:00:48 atom sshd[4045]: debug1: PAM: setting PAM_TTY to "ssh" > Jul 6 10:00:48 atom sshd[4045]: Failed none for root from 192.168.0.231 > port 46875 ssh2 > Jul 6 10:00:50 atom sshd[4045]: debug1: PAM: password authentication > accepted for root > Jul 6 10:00:50 atom sshd[4045]: debug1: do_pam_account: called > Jul 6 10:00:50 atom sshd[4045]: Accepted password for root from > 192.168.0.231 port 46875 ssh2 > Jul 6 10:00:50 atom sshd[4045]: debug1: monitor_child_preauth: root has > been authenticated by privileged process > Jul 6 10:00:50 atom sshd[4045]: debug1: PAM: establishing credentials > Jul 6 10:00:50 atom sshd[4045]: pam_unix(sshd:session): session opened for > user root by (uid=0) > Jul 6 10:00:50 atom sshd[4045]: debug1: Entering interactive session for > SSH2. > Jul 6 10:00:50 atom sshd[4045]: debug1: server_init_dispatch_20 > Jul 6 10:00:50 atom sshd[4045]: debug1: server_input_channel_open: ctype > session rchan 0 win 2097152 max 32768 > Jul 6 10:00:50 atom sshd[4045]: debug1: input_session_request > Jul 6 10:00:50 atom sshd[4045]: debug1: channel 0: new [server-session] > Jul 6 10:00:50 atom sshd[4045]: debug1: session_new: session 0 > Jul 6 10:00:50 atom sshd[4045]: debug1: session_open: channel 0 > Jul 6 10:00:50 atom sshd[4045]: debug1: session_open: session 0: link with > channel 0 > Jul 6 10:00:50 atom sshd[4045]: debug1: server_input_channel_open: confirm > session > Jul 6 10:00:50 atom sshd[4045]: debug1: server_input_global_request: rtype > [email protected] want_reply 0 > Jul 6 10:00:50 atom sshd[4045]: debug1: server_input_channel_req: channel > 0 request env reply 0 > Jul 6 10:00:50 atom sshd[4045]: debug1: session_by_channel: session 0 > channel 0 > Jul 6 10:00:50 atom sshd[4045]: debug1: session_input_channel_req: session > 0 req env > Jul 6 10:00:50 atom sshd[4045]: debug1: server_input_channel_req: channel > 0 request subsystem reply 1 > Jul 6 10:00:50 atom sshd[4045]: debug1: session_by_channel: session 0 > channel 0 > Jul 6 10:00:50 atom sshd[4045]: debug1: session_input_channel_req: session > 0 req subsystem > Jul 6 10:00:50 atom sshd[4045]: subsystem request for sftp > Jul 6 10:00:50 atom sshd[4045]: debug1: subsystem: exec() > /usr/lib/openssh/sftp-server > Jul 6 10:00:50 atom sshd[4047]: debug1: SELinux support disabled > Jul 6 10:00:50 atom sshd[4047]: debug1: PAM: reinitializing credentials > Jul 6 10:00:50 atom sshd[4047]: debug1: permanently_set_uid: 0/0 > Jul 6 10:00:50 atom sshd[4045]: debug1: Received SIGCHLD. > Jul 6 10:00:50 atom sshd[4045]: debug1: session_by_pid: pid 4047 > Jul 6 10:00:50 atom sshd[4045]: debug1: session_exit_message: session 0 > channel 0 pid 4047 > Jul 6 10:00:50 atom sshd[4045]: debug1: session_exit_message: release > channel 0 > Jul 6 10:00:50 atom sshd[4045]: Received disconnect from 192.168.0.231: > 11: disconnected by user > Jul 6 10:00:50 atom sshd[4045]: debug1: do_cleanup > Jul 6 10:00:50 atom sshd[4045]: debug1: PAM: cleanup > Jul 6 10:00:50 atom sshd[4045]: debug1: PAM: deleting credentials > Jul 6 10:00:50 atom sshd[4045]: debug1: PAM: closing session > Jul 6 10:00:50 atom sshd[4045]: pam_unix(sshd:session): session closed for > user root > > > > 2010/7/5 Dongsheng Song <[email protected]> > >> 改 LogLevel 为 VERBOSE 之后，也没有看到 sftp 的错误，看来需要改为 DEBUG。 >> >> 根据这里的信息，似乎是你的 sftp 客户端比较旧，不能理解非交互输出的内容。 >> http://www.openssh.org/faq.html#2.9 >> >> 那么可以在 /root/.bashrc 开始增加： >> >> # If not running interactively, don't do anything >> [ -z "$PS1" ] && return >> >> >> >> 2010/7/5 higeon <[email protected]> >> >>> 改LogLevel为VERBOSE 之后 >>> 看到如下的log输出 >>> >>> Jul 5 17:57:09 atom sshd[3789]: Connection from 192.168.0.105 port 49681 >>> Jul 5 17:57:09 atom sshd[3789]: Address 192.168.0.105 maps to >>> atom.local, but this does not map back to the address - POSSIBLE >>> BREAK-IN ATTEMPT! >>> Jul 5 17:57:09 atom sshd[3789]: Failed none for root from >>> 192.168.0.105 port 49681 ssh2 >>> Jul 5 17:57:30 atom sshd[3789]: Accepted password for root from >>> 192.168.0.105 port 49681 ssh2 >>> Jul 5 17:57:30 atom sshd[3789]: pam_unix(sshd:session): session >>> opened for user root by (uid=0) >>> Jul 5 17:57:30 atom sshd[3789]: subsystem request for sftp >>> Jul 5 17:57:30 atom sshd[3789]: Connection closed by 192.168.0.105 >>> Jul 5 17:57:30 atom sshd[3789]: pam_unix(sshd:session): session >>> closed for user root >>> Jul 5 17:57:30 atom sshd[3789]: Transferred: sent 1960, received 1424 >>> bytes >>> Jul 5 17:57:30 atom sshd[3789]: Closing connection to 192.168.0.105 port >>> 49681 >>> >>> >>> 问题在哪？ >>> >>> >>> 2010/7/5 Dongsheng Song <[email protected]>: >>> > 我用普通用户没有问题。 >>> > 你修改 sshd 的日志级别，再登录 sftp，看看 sshd 的日志报告什么问题？ >>> > >>> > Syslog Facility AUTH >>> > LogLevel VERBOSE 或 DEBUG >>> > >>> > tail -f /var/log/auth.log >>> > >>> > 2010/7/5 higeon <[email protected]> >>> >> >>> >> 在debian 5.04 lenny下我按照下面的方法设定了root的自动登录和自动startx。 >>> >> 后 来发现用root用户sftp登录登不进去。但是ssh却没问题。 >>> >> 我发现只要去掉root用户的.bashrc中的自动startx设定，sftp就可以正常登录。 >>> >> >>> >> root自动登录和自动startx的设定如下： >>> >> >>> >> 修改/etc/inittab >>> >> 把 >>> >> 1:2345:respawn:/sbin/getty 38400 tty1 >>> >> 修改为 >>> >> 1:2345:respawn:/sbin/rungetty tty1 --autologin root >>> >> >>> >> 在/root/.bashrc中添加 >>> >> # Auto start X >>> >> if [ -z "$DISPLAY" ] && [ $(tty) = /dev/tty1 ]; then >>> >> while true >>> >> do >>> >> startx >>> >> done >>> >> fi >>> >> >>> >> ※以上设定我参考了 >>> >> http://forums.debian.net/viewtopic.php?t=29333 >>> >> >>> >> ※PermitRootLogin 设定为 yes，没有改过。 >>> >> >>> >> 谁能帮忙解决这个问题？ >>> >> >>> >> 谢谢！ >>> > >>> > >>> >> >> >
