Can not connect to server

[stoiv]

Start time: 13/08/2014 16:43:43
Start time: 13/08/2014 16:43:41
Total download time: 00:00:00.2500000
Average transfer rate: 0.0 kbit/s
Url: http://worldwind25.arc.nasa.gov/wwel...=7&X=664&Y=825
Target file: D:\Program Files\NASA\World Wind 1.4\Cache\Earth\SRTM\7\0825\0825_0664.bi l.tmp
Progress: 0/0 bytes
Status: The remote server returned an error: (403) Forbidden.
Proxy: http://worldwind25.arc.nasa.gov/wwel...=7&X=664&Y=825

Response headers:
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Do I need a static IP address from my internet provider ?