We have a cluster of ADFS 2.0 servers on our internal LAN. They are going to change IPs and will be moved into a different VLAN. This new VLAN will be behind a firewall (don't ask why, it was a networking decision out of my control). This means that there will now be a firewall between my internal ADFS farm and my Writeable Domain Controllers (WDCs).
I can find lots of information about port requirements for my external proxy ADFS farm (they need port 443), but I cannot find anything regarding the port requirements between the internal ADFS servers and WDCs. What ports do I need to open?