View source for COMP3000 Operating Systems W23: Connecting to SCS Openstack

If you want to access the openstack environment during a video call (or when watching a movie online), please do not leave the Carleton VPN connected. You may also want to avoid your personal online activities going through the VPN or just simply need more convenience. Here are some alternative options. The instructions below assume you have created your VM instance with the VPN. Remember to replace <***> with your actual values.
==ProxyJump==

 <span style="color:#0000ff;font-weight:bold">ssh -J <CarletonUserName>@access.scs.carleton.ca <VMUserName>@<VMIP></span>

This above is the easy and recommended way.
If your ssh version is a bit old, you may need to add a key exchange algorithm with:

 ssh -oKexAlgorithms=+diffie-hellman-group1-sha1 -J <CarletonUserName>@access.scs.carleton.ca <VMUserName>@<VMIP>

==ProxyJump - persistent==

In your ssh config file (e.g., <tt>~/.ssh/config</tt> for Linux and <tt>C:\Users\<UserName>\.ssh\config</tt> for Windows 10/11):

 Host access
 HostName access.scs.carleton.ca
 KexAlgorithms +diffie-hellman-group1-sha1
 User <CarletonUserName>
 Host 134.117.*
 ProxyJump access
 User <VMUserName>

Then you can just <tt>ssh <VMIP></tt>.

==Windows (older versions)==

 ssh -o ProxyCommand="C:\Windows\System32\OpenSSH\ssh.exe -W %h:%p <CarletonUserName>@access.scs.carleton.ca" <VMUserName>@<VMIP>

==Legacy (two terminal windows needed, not recommended)==

 ssh -L 1200:<VMIP>:22 <CarletonUserName>@access.scs.carleton.ca

[stay logged in, and in another window do the following]

 ssh -p 1200 <VMUserName>@localhost

You can choose a port other than 1200.

==If you do need GUI access in certain cases==

x2go also uses the same protocol as ssh but provides remote desktop access (which technically runs an X server on your PC). Avoid using x2go unless really needed (as it is slow due to the amount of data to transfer).

Our SCS Openstack VM has already been shipped with the server-side of x2go, so just [https://carleton.ca/scs/2021/ssh-connection-with-x2go-remote-desktop-client/ follow the instructions here] to set it up on your PC client.

==If you are tired of typing passwords==