Access to fawcett

To access fawcett users need to ssh to fawcett.maths.cam.ac.uk. The direct access is possible only from desktops managed by Maths IT team and does not require a password. Access from other systems is possible only with usage of pair of ssh keys and by proxying the connection through ssh.maths.cam.ac.uk:

Linux

1. Generate a pair of ssh keys. It is useful to have a pair of keys per destination:

   ssh-keygen -f $HOME/.ssh/fawcett 

   Secure the key with a strong passphrase when prompted.

2. Copy public key to a Maths computer:

   scp $HOME/.ssh/fawcett.pub CRSID@ssh.maths.cam.ac.uk:

3. Now ssh to your account in Maths and there run command:

   ssh-copy-id -f -i $HOME/fawcett.pub fawcett 

   Now you can remove fawcett.pub from ssh.maths.cam.ac.uk

4. Now you should be able to access fawcett with command:

   ssh  -i $HOME/.ssh/fawcett  -J CRSID@ssh.maths.cam.ac.uk CRSID@fawcett.maths.cam.ac.uk

5. You can automate the options above by adding the following lines to file

   $HOME/.ssh/config on your computer:
       Host fawcett.maths.cam.ac.uk
       User CRSID
       ProxyJump CRSID@ssh.maths.cam.ac.uk
       IdentityFile ~/.ssh/fawcett

   Afterwards you should be able to connect to fawcett with command:

   ssh fawcett.maths.cam.ac.uk

6. If that fails then please send the output of
   

   ssh -v fawcett.maths.cam.ac.uk

   to the IT helpdesk.