I'm trying to accomplish the following:
I administer a school district, and many sites are now switching to HTTPS only (like Twitter). Once this happens, our filter no longer works for that website. What I can do is create a DNS zone that redirects all requests for Twitter.com to 1 Twitter IP address. This gives me the flexibility to block only that IP address at the firewall (and allow it for certain computers).
Once I do this, the regular Twitter.com website works, but the Timeline (or Twitter) application on Mac OS X 10.8 doesn't work. Any idea how this Twitter app connects to Twitter, and possibly what IP address I need to add to our Twitter DNS zone?