An inside
local address is typically an address chosen from the private
addresses defined by the InterNIC. This address will not go out into
the public and will be translated into an inside global registered
address.
17.2:
An
outside global address is a public registered address that will be
mapped to an inside local address.
17.3:
The
access list defines what private local addresses can be translated
into public global addresses.
17.4:
When an
ISP is changed, new public IP addresses need to be assigned. These
new addresses can be configured on a router or routers but hosts
need not be reconfigured.
17.5:
Overload
is a feature of NAT that allows for a many-to-few mapping. Many
local private addresses can be mapped to a few public
addresses.