- We're going to get into some network services
in this lesson such as NAT, network address translation,
NTP, Network Time Protocol, and yes,
like our previous lesson,
we did address those topics at the CCNA level,
but now we get to go a little bit deeper
and we're also going to get into a discussion of multicast.
We'll see how multicast routing works
for both IP version 4 and for IP version 6,
but let's get started with a review
of network address translation.