![]() The server is running Debian 6 LTS with the standard OpenSSH server. ![]() If I try to connect to the server myself using OpenSSH from some other host (or locally from the server itself), I am shown the correct fingerprint (the MD5 fingerprint for RSA host key). The very first time you use ssh, you will be prompted about the as-yet unknown authenticity fingerprint: say yes. So it appears that the host name/IP is entered correctly on client side.Ī connection to another (completely unrelated) SFTP server shows an incorrect fingerprint as well (but a different one than for the first server). The connection ultimately goes to the correct server, because I can see the login attempt in my server logs if the user allows the connection. Update: I just noticed that even an SHA-1 hash will have 20 octets, so the displayed fingerprint is not in any SHA format apparently. The fingerprint displayed to the remote user has 16 colon-separated octets, so it doesn't appear to use SHA-224 or anything higher. If an Unknown Fingerprint dialog appears, select Always then click Allow. So there is no indication whether RSA or DSA key is used, or whether MD5 or some SHA algorithm is used for creating the fingerprint. You can use an SFTP program to download your data from the NMR Centres. Cyberduck keeps a list of known (and therefore trusted) servers. This prompt is part of the SSH protocol and it's just Cyberduck telling you that it doesn't know anything about the server. ![]() I have also unsuccessfully compared the fingerprint against the output of cut -d ' ' -f 2 The first time that you log on to an SFTP server, Cyberduck will prompt you about about an unknown host key. I have a screenshot of the displayed fingerprint and have compared it with the output of ssh-keygen -lf /etc/ssh/ssh_host_dsa_key and ssh-keygen -lf /etc/ssh/ssh_host_rsa_key.pub, and it doesn't match either of these. ![]() A remote user has tried to connect to my SFTP/SSH server for the first time, using the "Transmit" client under Mac OS X, and has found that the host key fingerprint doesn't match the expected value. ![]()
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