I am having a problem publishing my website ever since I chagned to the Xfinity xFi wireless modem. I have used an old program, FrontPage 2002, for years without any problems. Now that I have changed from my older Xfinity modem to the new xFi modem, I cannot publish to my site. If I take my laptop to another location that has a different server or modem I have no problem publishing to my website. I am convinced there is something about the security protacols with this new setup, but Comcast/Xfinity insist that there is no problem on their side. It has to be something with this modem since it will publish literally anywhere else that I use the program. It does not work hardwired or wireless no matter what I do.
Are you seeing any error messages ? Do you use FTP to publish up to your web page / host ? If so, insure that ports 20 and 21 are port forwarded in the Xfi gateway device and that any firewall(s) are not blocking it.
This is all the info I have about port forwarding with a Comcast gateway device;
Good luck with it !