ssh using Linux
ssh using Windows
ssh jump feature
SSH Tips and Errors

Introduction

From the outside world, the SCS network is not accessible because it is behind the ITS firewall and behind the SCS firewall. In order to log in to the SCS network, you can use the SCS external access host:

access.scs.carleton.ca

ssh using Linux

Here is an example of how to ssh to access and then ssh to an omicron host:

ssh -X access.scs.carleton.ca

[access2 ~]$ ssh -X omicron02
The authenticity of host 'omicron02 (134.117.27.107)' can't be established.
RSA key fingerprint is db:d3:e6:a1:61:36:e2:1c:87:15:cc:f1:56:6d:19:cc.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'omicron02,134.117.27.107'

Note: -X option sets the display for your session so that you can launch remote applications and display them on your screen.

Some ssh clients may complain with: “Unable to negotiate with 134.117.xxx.xxx port 22: no matching key exchange method found.” The connect as follows:

ssh -oKexAlgorithms=+diffie-hellman-group1-sha1 access.scs.carleton.ca

ssh using Windows

Download the free putty ssh client and configure it as follows:

  • Host name: access.scs.carleton.ca
  • Connection type: ssh
  • Login: <use your SCS Linux account>

ssh jump feature

ssh has a jump feature so that you can log in to your destination host using one command. The syntax is as follows:

ssh -J your_login_account@access.scs.carleton.ca your_login_account2@destination.scs.carleton.ca

SSH Tips and Errors