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On 04/12/13 09:40, Philip Hudson wrote: > What's it for? What do I lose or risk losing if I turn it off? The > intertubes make it sound very clever but don't offer any examples I even > recognize let alone need or use. As the others have correctly pointed out, in principle it's a good idea but in reality it's a horrid, useless pile of rubbish and a gigantic security risk to boot. Kill it with fire at the router - most home routers ship with it on by default along with other stupidity like WPS. It's not actually possible to turn it off on a lot of consumer goods, like smart TVs, set-top boxes, etc but this varies wildly: it just depends on the firmware. On Windows kill it by disabling the following two services: Universal Plug and Play Device Host SSDP Discovery Service In that order. If you just disable the first, the second will kindly turn it back on for you! Not that I'm accusing Phil of having Windows PCs on his network (I kind of doubt that) but just for completeness. Regards -- The Mailing List for the Devon & Cornwall LUG http://mailman.dclug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/listfaq