Difference between revisions of "Remote Access"
Latest revision as of 20:53, 8 June 2022
Remote APT Data Analysis
For remote APT data analysis with IVAS, workstation Saturn can accessed with the (free) Windows-based remote-desktop program UltraVNC (see installation instructions further down) using the following protocol:
(1) Create a reservation for service "IVAS-Saturn” in NUcore and begin your session in NUCore. If everyone is diligent with the NUCore reservations, we should not see anyone inadvertently interfering with each others sessions, local or remote.
(2) Start "UltraVNC Viewer" from the icon on your Windows desktop (see download and installation instructions below).
- (2.1) VNC Server: enter the current IP address - available by request (it is no longer 188.8.131.52). None of the other parameters should need adjustments and can keep their default values.
- (2.2) hit "connect". A new dialogue window pops up.
- (2.3) enter username and password for your user account on workstation Saturn (provided by request from your facility manager).
- (2.4) hit "Log on". Within a few seconds you should get a new window with workstations Saturn's Windows desktop.
- (2.5) If you encounter the Windows logon-screen, proceed with logging in with the same credentials as above. If the workstation was left with another local user logged in, use the Windows "switch user" or "log-out"/"log-on" to access the correct local user account.
(3) At the end of your IVAS session, click the "close connection" icon in the top tool bar. This seems to be a more graceful way than simply closing the UltraVNC window which also will end the remote connection. You can leave the local Windows user account logged in.
(4) End your session in NUCore.
Hopefully this will get you going! Below now instructions for installing the UltraVNC Viewer:
(i) The compatible UltraVNC client is available for download here: uvnc.com. Don’t get confused by any advertisements for other stuff that may be around on this page.
(ii) We have installed and tested version ultravnc 184.108.40.206 . Version 220.127.116.11 and versions higher than 18.104.22.168 may work as well but may not have been tested.
(iii) Download "ultravnc 1206 X86 setup" (the version we have tested) or equivalent version.
(iv) "ultravnc 1206 X86 setup" is the installer for both UltraVNC Server and UltraVNC client (also called "Viewer"). Install on your Windows machine from within an account that has administrator privileges by right-clicking on the installer and selecting "run as administrator". You just need to install the "UltraVNC viewer". The installation should take up less than 5 MB space, even when installing the "Server" unit as well.
(v) After the installation, you should have an icon on your desktop "UltraVNC Viewer" from which you can start at point (2) above.
Potential limitations with remote access
- Color-depth and resolution are limited if you want to use it interactively. The color depth could be a real problem if people have very complicated sets, as it could be more difficult to differentiate the different elements. It would be fine for samples with only a few elements.
- There is some lag with the mouse, particularly if you use more colors. Anything which needs precise control of the mouse (particularly drawing ranges) takes some getting used to. It works if you are patient.
- Either a remote user or a local user may use IVAS at any one time. Not both. By default, both the local and remote users will be able to use the keyboard/mouse/video at the same time--careless or miseducated users could end up trying to work when someone else was already logged in. Or the remote user may have a slow-enough connection that local users think they are done when they're not.