118 lines
4.1 KiB
Markdown
118 lines
4.1 KiB
Markdown
---
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title: Remote Desktop Access
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#tags:
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#keywords:
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last_updated: 19 Aug 2019
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#summary: ""
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sidebar: merlin6_sidebar
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permalink: /merlin6/nomachine.html
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---
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Users can login in Merlin through a Linux Remote Desktop Session. NoMachine
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is a desktop virtualization tool. It is similar to VNC, Remote Desktop, etc.
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It uses the NX protocol to enable a graphical login to remote servers.
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## Installation
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NoMachine is available for PSI Windows computers in the Software Kiosk under the
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name **NX Client**. Please use the latest version (at least 6.0). For MacOS and
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Linux, the NoMachine client can be downloaded from https://www.nomachine.com/.
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## Accessing Merlin6 NoMachine from PSI
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The Merlin6 NoMachine service is located **only** in the following login nodes:
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* `merlin-l-001.psi.ch`
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* `merlin-l-002.psi.ch`
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Below are explained all the steps necessary for configuring the access to the
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NoMachine service running on a login node.
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### Creating a Merlin6 NoMachine connection
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#### Creating a **New** connection
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Click on the **New** button to create a new connection:
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![Create New NoMachine Connection]({{ "/images/NoMachine/screen_nx1.png" }})
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#### Configuring **NX** protocol
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![Select NoMachine Protocol]({{ "/images/NoMachine/screen_nx2.png" }})
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#### Configuring NoMachine Server Information
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Select the corresponding login node server where the NoMachine service is running and
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keep **4000** as the listening port; then **Continue**.
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![Configure NoMachine Server Information]({{ "/images/NoMachine/screen_nx3.png" }})
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#### Configuring NoMachine Authentication Method
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Choose your authentication method and **Continue**. **Password** or *Kerberos* are the recommended ones:
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![Configure NoMachine Authentication Method]({{ "/images/NoMachine/screen_nx4.png" }})
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#### Configuring Proxy
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In Merlin6, we will check **Don't use a proxy**, and **Continue**:
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![Configure NoMachine Proxy Information]({{ "/images/NoMachine/screen_nx5.png" }})
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#### Configuring Connection Name
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We strongly recommend to add the login node hostname, but
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you are free to choose any other name for your connection:
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![Configure Connection Name]({{ "/images/NoMachine/screen_nx6.png" }})
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### Connecting to Merlin6 NoMachine
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#### Opening an existing NoMachine connection
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Double click on the NoMachine server in order to connect to it:
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![Connect to a NoMachine existing connecion]({{ "/images/NoMachine/screen_nx7.png" }})
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#### Authenticating (whenever necessary)
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If authentication is required, you will be asked for it. The example below corresponds to **Password**
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authentication:
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![NoMachine Authentication]({{ "/images/NoMachine/screen_nx8.png" }})
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#### Creating/Re-Connecting Virtual Desktops
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Finally, create a virtual desktop in order to get in. If a previous virtual desktop was created, you
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might be able to re-attach the session.
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![Create or Connect to a NoMachine Virtual Session]({{ "/images/NoMachine/screen_nx9.png" }})
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Some hints of how to manage the resolution and windows will be shown.
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![NoMachine Resolution/Window Management Hints]({{ "/images/NoMachine/screen_nx10.png" }})
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### NoMachine LightDM Session Example
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An example of the NoMachine session, which is based on [LightDM](https://github.com/canonical/lightdm)
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X Windows:
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![NoMachine Session: LightDM Desktop]({{ "/images/NoMachine/screen_nx11.png" }})
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## Accessing Merlin6 NoMachine from outside PSI
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### No VPN access
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Access to the Merlin6 NoMachine service is possible without VPN through **'rem-acc.psi.ch'**.
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Please follow the steps described in [PSI Remote Interactive Access](https://www.psi.ch/en/photon-science-data-services/remote-interactive-access) for
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remote access to the Merlin6 NoMachine services. Once logged in **'rem-acc.psi.ch'**, you must then login to one of the available MErlin6 NoMachine
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services.
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### VPN access
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Remote access is also possible through VPN, however, you **must not use 'rem-acc.psi.ch'**, and you have to connect directly
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to the Merlin6 NoMachine services as if you were inside PSI. For VPN access, you should request it to the IT department by
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opening a PSI Service Now ticket:
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[VPN Access (PSI employees)](https://psi.service-now.com/psisp?id=psi_new_sc_cat_item&sys_id=beccc01b6f44a200d02a82eeae3ee440).
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