Out of proxy a second .com was added to the Url of http://feeds2.feedburner.com/DilbertDailyStrip [173.194.66.118] In this case the firewall is showing that as soon as the webpart is added to a page the webpart tries to access cs18-ss-1-lb.cnet.com:8080 (or phx1-ss-2-lb.cnet.com with a different ID [64.30.224.112]. It can be checked as follows: - cmd.exe - tracert feeds2.feedburner.com - tracert feeds2.feedburner.com.com