Re: guterslohn network address range
On Die, 28 Jun 2005, Geert Stappers wrote:
Hi,
> > Geert,
> > if you think of having two subnets with the same address and netmask
> > parted by one router you'll get problems. Either you'll have to take
> > an extra router with a different subnet address between the routers
> > or you'll have to take another address/netmask combination.
> >
> > Example:
> > testnet 10.0.2.0/22 --- 10.0.0.1 router v.x.y.z --- v.x.y.t router
> > 10.0.2.0/22 --- production net
> > The additional router may be any computer of the production net with
> > an extra NIC configured to v.x.y.t and NAT.
> > The doubling of masquerading in the two routers can be accepted for
> > testing.
> >
> > In this combination, neither the testing net nor the production net
> > is visible from the other side and they don't disturb another.
>
> yes, indeed.
> So I should prepare _two_ routers. :-(
>
> I think there are other possiblities.
> Which IP-networks are available on the GUT ethernet backbone?
If to router runs Linux, its also possible to use the NETMAP module, which
can map a complete Subnet to an other IP address range, e.g.
10.0.2.0/22 <-> 192.168.2.0/22
to MAP established by the module is bidirectional..
man iptables
->
NETMAP
This target allows you to statically map a whole network of addresses
onto another network of addresses. It can only be used from rules in the nat
table.
--to address[/mask]
Network address to map to. The resulting address will be
constructed in the following way: All 'one' bits in the mask are filled in
from the new `address'.
All bits that are zero in the mask are filled in from the
original address.
--
Dipl.-Inf. Univ. Florian Reitmeir http://net.multi24.com/
Josef-Schweinester-Str.1 Tel: +43 526 266166
6412 St. Georgen / Austria Fax: +43 526 266166 -10
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