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Skype is a free Internet telephony product that uses peer-to-peer (P2P) networking protocols to make free Internet-based phone calls and instant messaging. Recent updates to Skype have addressed the issue of "Super-Nodes" which required the use of campus resources to complete Skype calls. Skype should be configured as specified in Installation and Configuration of Skype. Failure to comply with these settings may allow your computer to become a "supernode" which may result in your computer automatically being blocked from the network.