Hi Jean-Marc, thanks for your suggestions. See the results inline.
Jean-Marc <jean-m...@6jf.be> writes: > On Wed, 24 Apr 2013 05:03:53 +0200, Andreas Leha > <andreas.l...@med.uni-goettingen.de> wrote: > Hi Andreas, > > Did you check your sshd config' ? > You can do it running: > sshd -t I get nothing -- which I think is good in this case. > > You can also make tests by running you sshd in debug mode. > Just start it on another port to not disturb the main one: > sshd -de -p 8022 > > and try a connection on this SSH from your client: > ssh -p 8022 yourhost > > and check what happens on your server. > I did that, here is the result: ,----[ on the server -- before a connection attempt ] | > /usr/sbin/sshd -de -p 8022 | debug1: sshd version OpenSSH_5.5p1 Debian-6+squeeze3 | debug1: read PEM private key done: type RSA | debug1: Checking blacklist file /usr/share/ssh/blacklist.RSA-2048 | debug1: Checking blacklist file /etc/ssh/blacklist.RSA-2048 | debug1: private host key: #0 type 1 RSA | debug1: read PEM private key done: type DSA | debug1: Checking blacklist file /usr/share/ssh/blacklist.DSA-1024 | debug1: Checking blacklist file /etc/ssh/blacklist.DSA-1024 | debug1: private host key: #1 type 2 DSA | debug1: rexec_argv[0]='/usr/sbin/sshd' | debug1: rexec_argv[1]='-de' | debug1: rexec_argv[2]='-p' | debug1: rexec_argv[3]='8022' | Set /proc/self/oom_adj from 0 to -17 | debug1: Bind to port 8022 on 0.0.0.0. | Server listening on 0.0.0.0 port 8022. | debug1: Bind to port 8022 on ::. | Server listening on :: port 8022. `---- ,----[ on the server -- during a connection attempt ] | debug1: Server will not fork when running in debugging mode. | debug1: rexec start in 5 out 5 newsock 5 pipe -1 sock 8 | debug1: sshd version OpenSSH_5.5p1 Debian-6+squeeze3 | debug1: read PEM private key done: type RSA | debug1: Checking blacklist file /usr/share/ssh/blacklist.RSA-2048 | debug1: Checking blacklist file /etc/ssh/blacklist.RSA-2048 | debug1: private host key: #0 type 1 RSA | debug1: read PEM private key done: type DSA | debug1: Checking blacklist file /usr/share/ssh/blacklist.DSA-1024 | debug1: Checking blacklist file /etc/ssh/blacklist.DSA-1024 | debug1: private host key: #1 type 2 DSA | debug1: inetd sockets after dupping: 3, 3 | Connection from 192.168.2.101 port 55650 | debug1: Client protocol version 2.0; client software version OpenSSH_6.0p1 Debian-4 | debug1: match: OpenSSH_6.0p1 Debian-4 pat OpenSSH* | debug1: Enabling compatibility mode for protocol 2.0 | debug1: Local version string SSH-2.0-OpenSSH_5.5p1 Debian-6+squeeze3 | debug1: permanently_set_uid: 101/65534 | debug1: list_hostkey_types: ssh-rsa,ssh-dss | debug1: SSH2_MSG_KEXINIT sent | debug1: SSH2_MSG_KEXINIT received | debug1: kex: client->server aes128-ctr hmac-md5 none | debug1: kex: server->client aes128-ctr 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 root service ssh-connection method none | debug1: attempt 0 failures 0 | debug1: PAM: initializing for "root" | debug1: PAM: setting PAM_RHOST to "192.168.2.101" | debug1: PAM: setting PAM_TTY to "ssh" | Failed none for root from 192.168.2.101 port 55650 ssh2 | debug1: userauth-request for user root service ssh-connection method publickey | debug1: attempt 1 failures 0 | debug1: test whether pkalg/pkblob are acceptable | debug1: Checking blacklist file /usr/share/ssh/blacklist.RSA-2048 | debug1: Checking blacklist file /etc/ssh/blacklist.RSA-2048 | debug1: temporarily_use_uid: 0/0 (e=0/0) | debug1: trying public key file /root/.ssh/authorized_keys | debug1: fd 4 clearing O_NONBLOCK | debug1: matching key found: file /root/.ssh/authorized_keys, line 1 | Found matching RSA key: 47:7c:14:dd:25:54:14:0d:d8:cf:c5:24:44:d4:7b:c2 | debug1: restore_uid: 0/0 | Postponed publickey for root from 192.168.2.101 port 55650 ssh2 | debug1: userauth-request for user root service ssh-connection method publickey | debug1: attempt 2 failures 0 | debug1: Checking blacklist file /usr/share/ssh/blacklist.RSA-2048 | debug1: Checking blacklist file /etc/ssh/blacklist.RSA-2048 | debug1: temporarily_use_uid: 0/0 (e=0/0) | debug1: trying public key file /root/.ssh/authorized_keys | debug1: fd 4 clearing O_NONBLOCK | debug1: matching key found: file /root/.ssh/authorized_keys, line 1 | Found matching RSA key: 47:7c:14:dd:25:54:14:0d:d8:cf:c5:24:44:d4:7b:c2 | debug1: restore_uid: 0/0 | debug1: ssh_rsa_verify: signature correct | debug1: do_pam_account: called | Accepted publickey for root from 192.168.2.101 port 55650 ssh2 | debug1: monitor_child_preauth: root has been authenticated by privileged process | debug1: PAM: establishing credentials | debug1: Entering interactive session for SSH2. | debug1: server_init_dispatch_20 | debug1: server_input_channel_open: ctype session rchan 0 win 1048576 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_global_request: rtype no-more-sessi...@openssh.com want_reply 0 | debug1: server_input_channel_req: channel 0 request pty-req reply 1 | debug1: session_by_channel: session 0 channel 0 | debug1: session_input_channel_req: session 0 req pty-req | debug1: Allocating pty. | debug1: session_pty_req: session 0 alloc /dev/pts/0 | debug1: SELinux support disabled | debug1: server_input_channel_req: channel 0 request env reply 0 | debug1: session_by_channel: session 0 channel 0 | debug1: session_input_channel_req: session 0 req env | debug1: server_input_channel_req: channel 0 request shell reply 1 | debug1: session_by_channel: session 0 channel 0 | debug1: session_input_channel_req: session 0 req shell | debug1: Setting controlling tty using TIOCSCTTY. | debug1: Received SIGCHLD. | debug1: session_by_pid: pid 895 | debug1: session_exit_message: session 0 channel 0 pid 895 | debug1: session_exit_message: release channel 0 | debug1: session_pty_cleanup: session 0 release /dev/pts/0 | debug1: session_by_channel: session 0 channel 0 | debug1: session_close_by_channel: channel 0 child 0 | debug1: session_close: session 0 pid 0 | debug1: channel 0: free: server-session, nchannels 1 | Received disconnect from 192.168.2.101: 11: disconnected by user | debug1: do_cleanup | debug1: PAM: cleanup | debug1: PAM: closing session | debug1: PAM: deleting credentials `---- ,----[ on the client side ] | > ssh -p 8022 root@192.168.2.109 | Linux debian 2.6.32-5-kirkwood #1 Sun May 6 16:57:51 UTC 2012 armv5tel | | The programs included with the Debian GNU/Linux system are free software; | the exact distribution terms for each program are described in the | individual files in /usr/share/doc/*/copyright. | | Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent | permitted by applicable law. | Last login: Wed Apr 24 02:54:10 2013 from 192.168.2.101 | debug1: PAM: reinitializing credentials | debug1: permanently_set_uid: 0/0 | Environment: | LANG=C | USER=root | LOGNAME=root | HOME=/root | PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/X11 | MAIL=/var/mail/root | SHELL=/bin/bash | SSH_CLIENT=192.168.2.101 55650 8022 | SSH_CONNECTION=192.168.2.101 55650 192.168.2.109 8022 | SSH_TTY=/dev/pts/0 | TERM=screen | Connection to 192.168.2.109 closed `---- So it says 'disconnected by user'? I might mention, that can login to (all) other machines with that client without problems. Regards, Andreas -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/877gjry6co....@med.uni-goettingen.de
