ESET

From ESET Support:

To help resolve your issue, please switch ESET's Firewall to Interactive 
Filtering temporarily. Please click or copy/paste the following ESET 
Knowledgebase article into your web browser: 
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http://kb.eset.com/zap/SOLN2899 
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Also:

Open Ports:

TCP 6631 Presto

and 

UDP 5353 Bonjour

http://kb.eset.com/esetkb/index?page=content&id=SOLN3112&actp=search&viewlocale=en_US&searchid=1357405919523

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