[OSM-talk] High load on the rendering servers?

colliar colliar4ever at aol.com
Sun Mar 8 14:45:29 UTC 2015


Am 08.03.2015 um 10:20 schrieb Christoph Hormann:
> On Sunday 08 March 2015, Tom Hughes wrote:
>>>
>>> Wow. This constitutes an extremely simple way to mount a DoS attack
>>> on the OSM tileservers. I will have to assume that the Operations
>>> WG is already thinking of ideas on how to prevent this possibility
>>> in the future.
>>
>> I think I can safely say we're not.
>>
>> Of course if you have a brilliant idea how to do such a thing then
>> I'm sure we'd love to hear it.
> 
> The OSM inspector already has a display mode for ways with long 
> segments - it currently however seems it is not working:
> 
> http://tools.geofabrik.de/osmi/?view=geometry&overlays=ways_with_long_segments,long_segments
> 
> And it has a fairly low threshold (0.3 degrees - that is ~40km) so it 
> highlights quite a lot of stuff.  With an additional layer highlighting 
> only the very long segments (like above 300km segment length) you could 
> quickly see such issues.  And editors of course also should prominently 
> warn about such edits.

Sounds like work for the editor software if the api is not capable to
prevent moving a node hundreds of kilometres.

cu colliar

[1] https://josm.openstreetmap.de/ticket/11215

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