Prerequisites: A browser such as Firefox needs to be installed on the jump server, and an X server needs to be running on the workstation.Performance: This method usually performs rather poorly because the graphical output has to be transferred from the jump server to the workstation through the network, which is very inefficient.While this approach solves some problems of plain SSH port forwarding, it also has limitations:
Only the rendering of the browser window happens on Bob's workstation. Using this method, the browser process runs on the jump server, and the connections to the web consoles of and are allowed. SSH provides a feature called X forwarding, which can be used in this situation. This situation might be a problem when using single sign-on (SSO), for instance.īob would also be to start a browser such as Firefox on the jump server and display it locally on his workstation. Redirects: When the website you are accessing redirects you to another URL, the connection fails because port forwarding is only valid for exactly this web server.
TLS certificate validation: The local browser is unhappy because, in most cases, the certificate Common Name doesn't match with the hostname in the address bar (localhost), so the certificate validation fails. This approach might work well in certain cases but has its limitations: Red Hat OpenShift Service on AWS security FAQīob can now point his local workstation's browser to to access the web console for, and to access the web console for. Using SSH, Bob opens a TCP tunnel for both systems, pointing to the web console port (9090) for and port 9091 for. To make sure that you don't breach any rules, please consult with your IT security representative. SSH command-line access to the database cluster is straightforward: ~]$ ssh ~]$ ssh ~]$ ~]$ ssh ~]$ ssh ~]$īut what if Bob wants to access the RHEL8 web console of and ? There are multiple ways to achieve this goal using SSH, all involving port forwarding of some sort.ĭisclaimer: In some organizations, security policies do not allow port forwarding. The firewall doesn't allow him to connect directly to this system from his workstation, but he can go through a jump server called. For an initial analysis, he usually uses the RHEL8 web console. Let's look at the following scenario: Bob is a system administrator at Securecorp, and he just got an alert indicating that a database cluster consisting of and is performing poorly. It gets a bit more tricky when an administrator wants to break out of the command-line realm and use a web-based interface instead. This method usually works great as long as an administrator sticks with command-line administration. Administrators first connect to a jump server using SSH, possibly through a VPN, before connecting to the target system. Many enterprises use Secure Shell (SSH) accessible jump servers to access business-critical systems.
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