I have 2 servers in data center connected directly to each other for backup data. Unfortunately there is physical access to it.
Server A (server 2008, two ethernets):
eth2: direct connection to server B, network sharing enabled
Server B (server 2008 R2, two ethernets):
eth2: direct connection to server A, network sharing enabled
There is daily backup (Windwos server backup) to each other.
What is the best practice to secure it?