I have a computer (CentOS) with 2 network cards. I want to use one network card (A) to retrieve time from NTP server (internet).  This would then set [this] local computer's time.  I then want to point all other clients, (computers, and other devices) to the second network (B) card, using it as a LOCAL NTP.  The B network must remain unto itself. This is all this computer will be used for.  No other programs or functions.  Can this be achieved?  nutshell:network A gets time via NTP Ethernet.network B then provides time for incoming queries from local clients.No cross network communication can occur.  I'm obviously new to networking, and any help is appreciated.
NTP with networks isolated
networking;ntp