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I have a machine called A with IP address 192.168.1.1/netmask 255.255.255.0

Another machine B with 192.168.1.2/netmask 255.255.255.0

There is no gateway entry specified in routing.
Their routing table is
For A
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
For B
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0

Now I am able to ping A to B as well as B to A

Now i want to put these two machines in a Separate network without changing the IP ADDRESS&netmask.How to do that?.(if machines are in physically sepated network they should not excahnge packets using dev as my case.They can use only gateway).
Simply speaking I shud not be able to ping form A to B or vice versa if they are separate network) . Without using gateway I want to achieve the goal.
Any ideas.Thanks in advance

SOLUTION

jlevie

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palanisaravanan

ASKER

Let me get U a clear picture.
If u want to connect for one network to another u can do routing by two ways.
one is
route add -net 192.168.0.0 netmask 255.255.255.0 dev eth0

another one is

route add -net 192.168.0.0 netamask 255.255.255.0 gw 192.168.1.1
(ip_forward is enabled)
MY QUESTION IS
packets should be sent to another network only if routing is done using gateway.
Packets should not be sent to another network if the routing is done using dev.
how to do that?

palanisaravanan

ASKER

If u want to connect for one network to another u can do routing by tw0
READ THIS LINE AS
If u want to connect from one network to another u can do routing by two

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yhetti

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