On Mon, 23 Oct 2000, Aaron Binns wrote:
> What s an RFC1918 address?
http://www.cis.ohio-state.edu/htbin/rfc/rfc1918.html outlines it exactly.
Basically, RFC1918 addresses are "reserved" IP addresses which are not
routed by the internet proper - or are not _supposed_ to be routed by the
internet proper.
They are used for "private" networks which connect to the internet only at
one point - and then generally use NAT - or don;t connect to the internet
at all.
Effectively, all addresses in the ranges
10.0.0.0 - 10.255.255.255 (10/8 prefix)
172.16.0.0 - 172.31.255.255 (172.16/12 prefix)
192.168.0.0 - 192.168.255.255 (192.168/16 prefix)
should _NOT_ be routed in any way, shape or form on "the internet" - in
other words, you should never see an address in these ranges in a
traceroute running on the internet proper.
Go read the RFC - it explains the motivations and reasoning behind using
them, and more importantly not using them.
DaZZa
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