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Old 11-15-2007, 01:25 PM   #1
Registered: Aug 2005
Distribution: Ubuntu 7.10, Slackware 12
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Can't connect via SCP

Hi all,

I recently installed Ubuntu and when trying to connect to it via SCP from my windows machine it just says login denied, do i have to enable SCP somewhere?

Any help appreciated.
Old 11-15-2007, 01:42 PM   #2
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Registered: Dec 2005
Location: London, ON, Canada
Distribution: Arch, Ubuntu, Slackware, OpenBSD, FreeBSD
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SCP is for securely copying (SCP = "Secure CoPy") files from client A to client B via SSH.

You don't log in with SCP, it's a one-shot command at copying a file from client A to a specified location at client B:
$ scp myfile.txt user@host:/home/user
If you're on client B (Windows) trying to log in to client A (Linux), client A needs to have an SSHD (SSH daemon - such as OpenSSH) installed and running, and you need to connect from client B using "ssh user@host".
Old 11-15-2007, 05:44 PM   #3
Registered: Aug 2005
Distribution: Ubuntu 7.10, Slackware 12
Posts: 270

Original Poster
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I use winSCP on the windows machine.

I chose openSSH to be installed somewhere in the ubuntu install options i think.

Last edited by dave`2005; 11-15-2007 at 05:47 PM.
Old 11-15-2007, 08:37 PM   #4
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Location: Brisbane, Australia
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You can run the following to see if sshd is running:
netstat -a | egrep ':(ssh|\b22\b)'
If it is running, you'll see something like this:
tcp        0      0 *:ssh                   *:*                     LISTEN
I don't know the commands to start/stop daemons on Ubuntu, but it may be something like /etc/init.d/sshd start

Will the Ubuntu box be exposed to the internet? If so, you should change some of the /etc/ssh/sshd_config settings. The main ones I use are:
Protocol 2
AllowUsers steve
PermitRootLogin no
PasswordAuthentication no
Subsystem       sftp    /usr/libexec/sftp-server
I use public key authentication so I disable password authentication - it's up to you, depending on what you require. Once sshd is running, you should be able to use scp, ssh and sftp as indienick described.


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