Hi,
Intelligent updater will only update the definitions for the AV/AS component. PTP and NTP definitions can be updated onnly from the liveupdate server of internet, or Liveupdate Admistrator.
So, I suggest you install an LUA in that network and attach the clients to LUA for getting the definitions.
But at the LUA will need to have internet connection to update the virus definitions.
Please following documents for
Installing and
Configuring LUA.
Also, plese take a look at the following Discussion Forums and its solution for connecting the unmanaged clients to the LUA.
Best,
Aniket