Creating a special network Topology

Hello everyone, We ARTH Learners were provided with a task i.e.

Task Description📄

🔰 14.1 Create a network Topology Setup in such a way so that System A can ping to two Systems System B and System C but both these systems should not be pinging each other without using any security rule e.g. firewall, etc.

So Here’s how I did it:

System A:

I’ve manually altered the IP and routing table of it by the commands:

ifconfig enp0s3 192.168.43.1/24

route add -net 192.168.43.0/28 enp0s3

System B:

Commands used for modifying the IP and routing table:

ifconfig enp0s3 192.168.43.2/24

route add -net 192.168.43.0/31 enp0s3

System C:

Commands used for modifying the IP and routing table:

ifconfig enp0s3 192.168.43.3/24

route add -net 192.168.43.0/31 enp0s3

After doing all these settings

Pinging Systems B and C from System A:

So we can see that both the systems are ping-able.

So there’s a connection established between (A and B) & (A and C)

Now pinging fromB to C:

As we see it’s not ping-able hence connection not established

Now pinging from C to B:

So the reverse is also not possible.

Hence the specified network topology has been successfully set up.