SSH (Secure SHell), SFTP (Secure FTP) and SCP (Secure Copy)

ssh (Secure SHell) encrypts your transmitted data (including username/password). You can login (ssh), copy (scp) and ftp (sftp) via ssh. It is also possible to do a lot more with ssh (tunnels).

For most people the client side of SSH is useful:

• mac OSX
• Windows
• UNIX
• Mac, pre-OSX

For some the more technical aspects of SSH servers and tunnels are needed:

• SSH servers (sshd)
• SSH tunnels

Remote access to Chemistry Department computers with ssh is covered by the bastion hosts documentation (restricted to Chemistry Department Raven accounts)

The command line use of ssh is typically:

ssh CRSID@computer.domain

e.g.
ssh mr349@hermes.cam.ac.uk
putty.exe mr349@hermes.cam.ac.uk

Please use ssh, scp, sftp whenever possible instead of telnet, rlogin/rsh or ftp.

The first time you connect to a host you will be presented with a message such as:
The authenticity of host 'ayanami.chem.pwf.cam.ac.uk' can't be established.
Key fingerprint is 1024 00:d1:28:83:59:7d:38:2d:fb:9d:39:04:ee:af:c3:d6.
Are you sure you want to continue connecting (yes/no)?
Once you have connected to a host, the key will be stored in a file (known_hosts, usually in a directory called .ssh), in your home directory, and you will not be prompted for confirmation again.