On Thu, Oct 07, 2010 at 01:09:16PM +0200, ext Dion McMurtrie wrote:
> I want to use a map on a low volume intranet site and overlay some
> company data over the map. I'm thinking I'll generate a KML file and
> then use OpenLayers to overlay the data over map data from an external
> map server (I don't really want the hassle of maintaining my own map
> server).
> 
> My primary question is about the security of the data in the KML - it
> will be sensitive confidential information. My understanding from
> reading through the OpenLayers documentation is that Vector Layers of
> which KML is a subtype are rendered totally on the client side by
> OpenLayers. So I don't have to worry about data in the KML being
> captured by the external map server or being liable to interception by a
> third party because the data never leaves the client - is this a correct
> interpretation?

Yes.

> My understanding is that the only data possible to capture outside the
> company network using this approach is the areas and zoom level of the
> map requested from the map server. Is that correct?

Well, you could also not use an external map server at all, but yes,
the only thing OpenLayers delivers 'outside' is requests for the tiles
that you are loading into your map.

> My secondary question is - any good suggestions for an external hosted
> map server? Something like NearMap's Free Commercial Licence
> http://www.nearmap.com/products/free-commercial-licence looks like a
> good option - can anyone confirm this or offer a better solution?

Depends what you want. For street maps, I'd just use OSM for most use
cases, or pay Google if you need good quality, but I've never heard of
NearMap.

-- Chris

> I appreciate any advice anyone can offer.
> 
> Thanks,
> Dion.
> 
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