I always use Krusader for (s)ftp. The dual pane is a sheer delight, better feel then Nautulis/Files. Version 2.4.0-beta3 Ubuntu 14.04 LTS
Recently I got error messages connecting on some updated servers (sftp://user@xxxx):
no match for method mac algo client->server
The client supports only hmac-ssha1, and the server has this disabled for security reasons.
AFAIK Krusader uses KIO (like Dolphin) and there is a bug report and there will be support in the next updated libssh 0.7.0 library. Actually just released.
How can I connect? Is hmac-sha1 really unsafe or can I enable it on the server? How do I fix my Krusader? Can I recompile it with libssh-0-7-0?