06-08-2012
Hmm, some more ideas:
Is the public key in ~/.ssh/authorized_keys on the target system written as a single line? Because keys are long strings, sometimes they are pasted as multiple lines instead of a single one. Happened to me several times.
Is public key login disabled in /etc/ssh/sshd_config on the target system (look for PubkeyAuthentication)?
Try to connect using a higher debug level, like ssh -vv or even ssh -vvv. Maybe something useful comes up.
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plink(1) PuTTY tool suite plink(1)
NAME
plink - PuTTY link, command line network connection tool
SYNOPSIS
plink [options] [user@]host [command]
DESCRIPTION
plink is a network connection tool supporting several protocols.
OPTIONS
The command-line options supported by plink are:
-V Show version information and exit.
-pgpfp Display the fingerprints of the PuTTY PGP Master Keys and exit, to aid in verifying new files released by the PuTTY team.
-v Show verbose messages.
-load session
Load settings from saved session.
-ssh Force use of SSH protocol (default).
-telnet
Force use of Telnet protocol.
-rlogin
Force use of rlogin protocol.
-raw Force raw mode.
-serial
Force serial mode.
-P port
Connect to port port.
-l user
Set remote username to user.
-m path
Read remote command(s) from local file path.
-batch Disable interactive prompts.
-pw password
Set remote password to password. CAUTION: this will likely make the password visible to other users of the local machine (via com-
mands such as `w').
-L [srcaddr:]srcport:desthost:destport
Set up a local port forwarding: listen on srcport (or srcaddr:srcport if specified), and forward any connections over the SSH con-
nection to the destination address desthost:destport. Only works in SSH.
-R [srcaddr:]srcport:desthost:destport
Set up a remote port forwarding: ask the SSH server to listen on srcport (or srcaddr:srcport if specified), and to forward any con-
nections back over the SSH connection where the client will pass them on to the destination address desthost:destport. Only works in
SSH.
-D [srcaddr:]srcport
Set up dynamic port forwarding. The client listens on srcport (or srcaddr:srcport if specified), and implements a SOCKS server. So
you can point SOCKS-aware applications at this port and they will automatically use the SSH connection to tunnel all their connec-
tions. Only works in SSH.
-X Enable X11 forwarding.
-x Disable X11 forwarding (default).
-A Enable agent forwarding.
-a Disable agent forwarding (default).
-t Enable pty allocation (default if a command is NOT specified).
-T Disable pty allocation (default if a command is specified).
-1 Force use of SSH protocol version 1.
-2 Force use of SSH protocol version 2.
-C Enable SSH compression.
-i path
Private key file for authentication.
-s Remote command is SSH subsystem (SSH-2 only).
-N Don't start a remote command or shell at all (SSH-2 only).
-sercfg configuration-string
Specify the configuration parameters for the serial port, in -serial mode. configuration-string should be a comma-separated list of
configuration parameters as follows:
o Any single digit from 5 to 9 sets the number of data bits.
o `1', `1.5' or `2' sets the number of stop bits.
o Any other numeric string is interpreted as a baud rate.
o A single lower-case letter specifies the parity: `n' for none, `o' for odd, `e' for even, `m' for mark and `s' for space.
o A single upper-case letter specifies the flow control: `N' for none, `X' for XON/XOFF, `R' for RTS/CTS and `D' for DSR/DTR.
MORE INFORMATION
For more information on plink, it's probably best to go and look at the manual on the PuTTY web page:
http://www.chiark.greenend.org.uk/~sgtatham/putty/
BUGS
This man page isn't terribly complete. See the above web link for better documentation.
PuTTY tool suite 2004-03-24 plink(1)