connecting local cisco ACS to Wan cisco ACS

[Ehsan_]

Hi
I have an ACS in my LAN and an ACS in my WAN.i want that the clients who want to authenticate with local ACS connect to the ACS which is working in WAN and then authentication done.
in fact I want to know that is there a scenario that 2 ACS can communicate with each other as client and server?

 

[kanewolf]

A quick look at the ACS users guide says that you can do database replication from a master. That way the authentication is done on the LAN but the changes are made at the master and replicated to the local servers.