Accessing the iTunes store through a firewall/filter

Needing to access iTunes again, which we struggled to block last year with our bandwidth issues.  Seems I slogged through the Apple site for quite a while last time looking for their little list of sites (servers) that need to be open/blocked to allow/deny access.  Once again I have frittered away time looking for that little list.  Found it here (http://support.apple.com/kb/TS3125):

IMPORTANT: iTunes must be allowed to contact Apple using the following ports and servers:

• port 80
• port 443
• phobos.apple.com, deimos3.apple.com, albert.apple.com, gs.apple.com, itunes.apple.com, ax.itunes.apple.com

For a more complete list of ports used by Apple products see “Well known” TCP and UDP ports used by Apple software products. 

 iTunes also contacts VeriSign servers during an iPhone restore and activation:

• evintl-ocsp.verisign.com
• evsecure-ocsp.verisign.com

By the way, the list of “well known TCP and UDP ports used by Apple software products” is quite impressive and voluminous. Just to make it a little easier to see, the servers used are:

phobos.apple.com
deimos3.apple.com
albert.apple.com
gs.apple.com
itunes.apple.com
ax.itunes.apple.com