On Tue, 4 Feb 1997, Lilia Miltcheva wrote:
> Jeff,
> What you say is correct and I do not have any problem with that. My
> question is rather what will happen if I address host.unicc.org that has
> the same IP as www.microsoft.com, for example?
> As the tunnel comes up, the tunnel server tells the client which
> networks a to be tunneled, so logically in this case for
> www.microsoft.com = host.unicc.org I will go through the tunnel and
> therefore I will never be able to reach www.microsoft.com while the
> tunnel is up....
There is a set of IP numbers that is reseved precisely for this situation -
they are reserved for private networks, i.e. networks that will never be
directly addressable by the internet, and are garunteed by IANA (among
others I believe) to never be allocated on the internet. According to
rfc1918 (available at http://ftp.isi.edu/in-notes/rfc1918.txt ) the
following address spaces are available:
The Internet Assigned Numbers Authority (IANA) has reserved the
following three blocks of the IP address space for private internets:
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)
Cheers,
--Dg
References:
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