Topology Setup in such a way so that System A can ping to two Systems System B and C but both systems should not be pinging each other

Sandeshjain
3 min readSep 7, 2022

We all that we can ping to every system in the world because of the universal ip actually it is total not depend on ip it also depend on netmask and gateway so here I come with new task

Task Description

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.

First check the IP address of all 3 systems.

System A

System B

System C

Create a temporary ip address for these 3 systems and after disconnecting the network original ip will come again.

System A

System B

System C

Now create a routing table for this topology.

System A

In this create a route which can connect to B and C.

System B

In this create a route which can connect to only System A

System C

Create route same as System B

We set the routing table.

Now let’s see the connectivity.

System A

As we can see in the above picture that System A is successfully pinging to B and C.

System B

As we can see that in above picture that System B is able to ping but not to C. This is because of the route that we added to the routing table.

System C

As we can see in System C also that it is able to ping A but not B.

Hence we created the topology where System A can ping to B and C but B and C cannot ping to each other.

Thank You

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