Connect to TD using public network and private network

Connectivity

Connect to TD using public network and private network

Hi,

What is the difference between connecting to TD DB using a public network and private network ? Recently, we had an issue in which we were able to connect to TD Db using private network and not through public network. What type of connection does an etl use to connect to TD Db ? Can someone point me to the reference manual for more details on this ?

Thanks !

Samir