KuffnerLocalLightServer - KLLS

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The Kuffner Local Light Server is a Raspberry Pi device, located at Kuffner Sternwarte Observatory. It's primary purpose is to provide ssh/rsync access to a mass storage device, as a landing zone for incoming light data. Secondary, a HTTP service is running, providing very rudimentary information about system health and received data.



The KLLS is attached to the LAN of the Kuffner Sternwarte Observatory, which in turn has internet access via the VHS (Volkshochschule) network. This means being behind a NAT'ed firewall, with somewhat restrictive rules, and no administrative access (port forwading, etc.).

LAN access allows for direct connections of AT_Kuffner and AT_Kuffner2 stations.

TOR network

To allow for outside access, a TOR hidden service on ports 22 and 80 is provided, which can be found via the syuoa5ntv6cgjzv7.onion address.

non-TOR access

There are services that let you look at TOR-sites from the outside internet ("clearnet" in TOR speak). These services are not recommended for anything privacy-related, and you have to assume that any connection will be monitored. But for our purpose of accessing KLLS's status page, these services are useful, as you don't need a TOR browser installed.

The onion.ws-service works by appending a .ws TLD to your onion address. KLLS can therefore be reached via syuoa5ntv6cgjzv7.onion.ws (just copy this to your browser's address bar). From time to time, this service becomes abysmally slow, so be patient.

Individual configurations

For AT_LebMin a special status page was configured: A small health report is regularly created at AT_LebMin an then rsync'd to a server, which acts as a relay into the TOR network and delivers the health report to KLLS. The need for the relay arose as AT_LebMin has no TOR-software installed, and the openWRT-repos of version 14.07 don't seem to work anymore.

(Relay server is privately owned by Nero2401)