Ubuntu – Can connect to ubuntu server with PuTTY but can’t via WinSCP

puttyUbuntuubuntu-10.04winscp

I have just updated from 8.04 to 10.04 after such a long time I am rather excited. But since the update I am now unable to login to my server via WinSCP but a connection with PuTTY is still completely fine.

Neither are using private keys. I am just entering a username and password each time.

I do however get through to the authentication panel, where i can enter my username and password. This is where it appears to time out.

So, is there a reason why one would accept a SSH connection and not the other?

Best Answer

There was such a bug in WinSCP before 5.0.5 version (https://winscp.net/tracker/764) and relevant discussion here (https://winscp.net/forum/viewtopic.php?t=10266). So please check what version of WinSCP you are using. Try upgrading or downgrading to either 4.3.5 or 5.0.5 as they have no this bug.

Related Solutions

Sudo Asks for Password Twice with LDAP Authentication

in PAM there is an option called "use_first_pass" :

auth        sufficient    pam_ldap.so use_first_pass

try enabling it for ldap, should fix your issue

Ubuntu – Connecting to Amazon EC2 over SSH from Ubuntu

To use your EC2-priv.ppk key from your Ubuntu desktop you will have to convert it into a format that OpenSSH will understand. You can go this with the PutTTYgen program.

Run PuTTYgen and click on Conversions->Import key. Import your EC2-priv.ppk private key. Then click Conversions->Export OpenSSH key. Save the converted key.

PuTTYgen will also show the public key associated with the private key. This should be added to the $HOME/.ssh/authorized_keys file on your ec2 instance.

Now you have a key in a format that ssh on your Ubuntu system will understand. copy this key to $HOME/.ssh/identity. Ensure that the permissions are 600 on the identity file.

You should now be good to go.

Regarding the use of public key authentication. This really is the way that you should authenticate to your system. It is extremely unlikely that any brute force attack will succeed and is far more secure than simple passwords.

Best Answer

Related Solutions

Sudo Asks for Password Twice with LDAP Authentication

Ubuntu – Connecting to Amazon EC2 over SSH from Ubuntu

Related Topic