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Safe and secure control of VLBI stations from remote. Alexander Neidhardt (FESG, TUM) neidhardt@fs.wettzell.de. Martin Ettl (FESG/ MPIfR ), Jim Lovell (UTAS), Walter Alef ( MPIfR ), Ed Himwich (NASA/GSFC), Christopher Beaudoin (MIT- Haystack ),

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slide1

Safe and secure control of VLBI stations from remote

Alexander Neidhardt (FESG, TUM)

neidhardt@fs.wettzell.de

Martin Ettl (FESG/MPIfR), Jim Lovell (UTAS),

Walter Alef (MPIfR), Ed Himwich (NASA/GSFC), Christopher Beaudoin (MIT-Haystack),

Christian Plötz (BKG), Arpad Szomoru (JIVE), Matthias Mühlbauer (BKG),

slide2

Geodetic

Observatory

Wettzell

slide4

The ideasbehind …

Local

- Standard operations

- Local operator

slide5

The ideasbehind …

Internet

Local

Remote

- Standard operations

- Local operator

- Check system

states from

everywhere at the

observatory

- Tele-working

- Remote assistance

and diagnostics

- Control very

remote, inaccessible

telescopes

slide6

The ideasbehind …

Internet

Internet

Local

Remote

Shared

- Standard operations

- Local operator

- Check system

states from

everywhere at the

observatory

- Tele-working

- Remote assistance

and diagnostics

- Control very

remote, inaccessible

telescopes

- Save, passive data

live monitoring

- Dedicated control

access by responsible

person

- Shared access from

different observatories

- Shared night shifts

slide7

The ideasbehind …

Internet

Internet

Local

Remote

Shared

Unattended

- Standard operations

- Local operator

- Check system

states from

everywhere at the

observatory

- Tele-working

- Remote assistance

and diagnostics

- Control very

remote, inaccessible

telescopes

- Save, passive data

live monitoring

- Dedicated control

access by responsible

person

- Shared access from

different observatories

- Shared night shifts

- Observations run

autonomous,

(semi-) automated

and unattended

slide8

The ideasbehind …

NEXPReS

NovelEXplorationsPushing Robust e-VLBI Services

slide9

NEXPReS WP5/Task 3: Continuous quality monitoring & Station Remote Control

Novel EXplorations Pushing

Robust e-VLBI Services

  • three-year project from July 2010 to June 2013
  • with the goal to develop future e-VLBI services of the European VLBI Network (EVN) and to
  • use e-VLBI for each astronomical observation of the EVN
  • cooperation of 15 astronomical institutes and National Research and Education Network (NREN) providers
  • funded by the European Union's Seventh Framework Programme as e‑Infrastructure project
  • with the four technical main activities:
  • - Cloud Correlation
  • - Dynamically Provisioned Network Resources
  • - Computing in a Shared Infrastructure
  • - Provisioning High-Bandwidth, High-Capacity Networked Storage

WP5/Task 3:

(TUM, MPIfR, JIVE)

  • identify and re-act on observation failures in near real-time
  • improve diagnostics
  • allow direct (read) access to the field system control parameters
  • extend the capabilities of the NASA Field System with

- a secure remote control (authentication, authorization, operator roles) and

- system monitoring

slide11

The ideasbehind …

NEXPReS

NovelEXplorationsPushing Robust e-VLBI Services

The solution: e-RemoteCtrl

slide13

The solution: e-RemoteCtrl

Linux

User

Credentials

wxWidgets

System

Monitoring

Software generator

idl2rpc.pl

e-RemoteCtrl

Wettzell Software Toolbox

(well testedmodules & components)

slide14

The ideasbehind …

NEXPReS

NovelEXplorationsPushing Robust e-VLBI Services

The solution: e-RemoteCtrl

Security

slide15

Security

rbash

sshbroker

Tunneled e-RemoteCtrl

Wettzell Software Toolbox

(well tested modules & components)

slide16

Security

SSH-Broker configuration (passwords are AES encrypted)

slide17

Security

User role management with

authentication and authorization

Static

Roles

Dynamic

Roles

Observer

Notifier

Notifier

Currently

not

used

Scheduler

Number of users

Rolechange

Agent

User rights

Operator

Operator

Supervisor

Operator

Superuser

Read

Chat

Schedule

(drudg)

Adapt

(attenuation)

Control

System

change

slide18

Security

Role change as three-way-handshake (1)

Step 1: REQUEST

Push role change button

User 1

Server

User 2

esu

(superuser)

eoper

(notifier)

Send role change request to server

Verify

request

Reply OK/NOK

Inform active operators about request

Step 2: CONFIRM

Accept role change

Verify

request

Reply OK/NOK

Inform requestor about accept

Confirm role change

Verify

request

Reply OK/NOK

Change active operator

Inform requestor about change

slide19

Security

Role change as three-way-handshake (2)

Step 1: REQUEST

Push role change button

User 1

Server

User 2

esu

(superuser)

eoper

(notifier)

Send role change request to server

Step 2: ACCEPT

Verify

request

Reply OK/NOK

Inform active operators about request

Accept role change

Verify

request

Reply OK/NOK

Inform requestor about accept

Confirm role change

Verify

request

Reply OK/NOK

Change active operator

Inform requestor about change

slide20

Security

Role change as three-way-handshake (3)

Step 1: REQUEST

Push role change button

User 1

Server

User 2

esu

(superuser)

eoper

(notifier)

Send role change request to server

Step 2: ACCEPT

Verify

request

Reply OK/NOK

Inform active operators about request

Step 3: CONFIRM

Accept role change

Verify

request

Reply OK/NOK

Inform requestor about accept

Confirm role change

Verify

request

Reply OK/NOK

Change active operator

Inform requestor about change

slide21

Security

Role change as three-way-handshake (3)

Step 1: REQUEST

Push role change button

User 1

Server

User 2

esu

(superuser)

eoper

(notifier)

Send role change request to server

Step 2: ACCEPT

Verify

request

Reply OK/NOK

Inform active operators about request

Step 3: CONFIRM

Accept role change

Verify

request

Reply OK/NOK

Inform requestor about accept

Confirm role change

Verify

request

Reply OK/NOK

Change active operator

Inform requestor about change

esu

(superuser)

eoper

(operator)

esusuperuser

eoperoperator

slide22

The ideasbehind …

NEXPReS

NovelEXplorationsPushing Robust e-VLBI Services

The solution: e-RemoteCtrl

Security

Features

slide23

Features

Main window

Mark 5 capacity

Status monitor

Logging

System

temperatures

Command

input

Chat

Connection status

Connection information

slide24

Features

Checklists

slide25

Data forscience

andanalysis

Data for

system operations

Data for

diagnosis

Features

Station specific system monitoring (HTML or plain text)

MCI

slide26

Features

Parallel control of several telescopes

Acknowledgements to Jim Lovell, UTAS for his support of the project, the access to the AuScopesystems and the usage of the software.

slide27

The ideasbehind …

NEXPReS

NovelEXplorationsPushing Robust e-VLBI Services

The solution: e-RemoteCtrl

Security

Features

Test bedand e-RemoteCtrlnetwork

slide28

Test bedand e-RemoteCtrlnetwork

Tele-working

Remote control

on site

NyAlesund

Hartebeesthoek

regularusage

slide29

Thank you

The softwareisavailable on the Web pagehttp://www.econtrol-software.de

See also our demo today!!!