Recently I have lost the ability to make a SFTP connection to my Linux server from a remote computer.

It is a Redhat Enterprise ES Linux machine, Redhat release 4.
I can make an SSH connection through putty using an SSH Key, but I can not get an SSH connection for SFTP using either Psftp or FileZilla. I have test from two different computers and the result is the same, I get a 'timed out' message. For some reason, I can not find any mention of the failure to connect in the Xferlog log file.

No changes (that I know of) have been made to the server recently, so this has be somewhat worried. So far everything else is working fine.

Sorry if there is more information I should be providing, jsut let me know what you need if more is needed.

Thanks.

sftp is implemented by the ssh server not by vsftpd, take a look at your sshd config and see if the sftp part has been disabled.

Nope, sshd_config still has the
Subsystem sftp /usr/libexec/openssh/sftp-server
line

have you tested using the sftp command on linux ?

Alright, I got it fixed. It turned out it was a problem with my Bash shell configuration.

Thanks.