Connecting to Isambard

Linux

The following stanza is required in your local ~/.ssh/config in order to traverse the bastion hosts transparently and enable SCP usage:

Host *isambard.gw4.ac.uk *isambard
  User XX-USERNAME
  ForwardAgent yes
  ForwardX11 yes

Host login-01.isambard.gw4.ac.uk login-01.isambard login.isambard
  Hostname login-01
  User XX-USERNAME
  ProxyCommand ssh isambard.gw4.ac.uk 'nc %h %p'

Host login-02.isambard.gw4.ac.uk login-02.isambard
  Hostname login-02
  User XX-USERNAME
  ProxyCommand ssh isambard.gw4.ac.uk 'nc %h %p'

Host xcil00.isambard.gw4.ac.uk xcil00.isambard xci.isambard
  Hostname xcil00
  User XX-USERNAME
  ProxyCommand ssh isambard.gw4.ac.uk 'nc %h %p'

Host xcil01.isambard.gw4.ac.uk xcil01.isambard
  Hostname xcil01
  User XX-USERNAME
  ProxyCommand ssh isambard.gw4.ac.uk 'nc %h %p'

To access the Isambard Phase 1 mixed-arch system, run either ssh login-XX.isambard or ssh login.isambard

To access the Isambard Phase 2 XC50 ARM system, run either ssh xcil00.isambard or ssh xci.isambard

Remember to replace XX-USERNAME with your Isambard username.

Windows

If you are using windows then the simplest way to set up access to Isambard is to with WinSCP:

  1. First create a New Site
    • Enter Hostname and your Username
    • Note that for Phase 2 (xcil00/01) the names are ‘ex’, ‘see’, ‘eye’, ‘el’, ‘zero’, ‘zero’/’one’.
    • For Phase 1 replace this with login-01/02 as per the ssh config above.
../_images/winscp_session.jpg
  1. Next click on Advanced and Connection -> Tunnel.
    • Select to ‘Connect through SSH tunnel’
    • Enter the proxy hostname ‘isambard.gw4.ac.uk’ and your username.
../_images/winscp_tunnel.jpg
  1. Click OK and Save, then Login and Enjoy …