getURL in RCurl problem behind firewall R

I'm behind hospital firewalls and usually have to use setInternet2(T) for R to access the net properly. However running my code (that works perfectly at home) results in

curlPerform(curl = curl, .opts = opts, .encoding = .encoding) : 
  Coul开发者_如何学运维d not resolve host: www.cnn.com; Host not found

Is it at all possible to work around this?

regards,

//M

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It looks like RCurl doesn't use the same proxy settings as R (and so setting internet2 doesn't help), you need to set them manually, with the curlSetOpt command:

curl <- getCurlHandle()

curlSetOpt(.opts = list(proxy = '<address>:<port>'), curl = curl)

ans <- getURL('http://www.cnn.com', curl = curl)