SYSTEM A CAN PING TO SYSTEM B AND C BUT THEY CANT PING EACHOTHER!

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.

Let’s check the IP and routing table of three VMS and whether they are pinging each other or not!!

SYSTEM -A -IP is #192.168.1,15#

This can ping to google and B and C and have two routes in the routing table!

System-B — #192.168.1,8#

This can also ping to google and other VMS and two routes in routing table!

System C -ip #192.168.1,9#

This can also ping to google and other VMS and there are two routes in the routing table.

Now let's change the ips of VM!

SYSTEM A IP:- 192.168.1.1

ifconfig enp0s3 192.168.1.1/24

SYSTEM B IP:- 192.168.1.2

ifconfig enp0s3 192.168.1.2/24

SYSTEM C IP:- 192.168.1.3

ifconfig enp0s8 192.168.1.3/24

Now let’s add routes in three vms.

SYSTEM A:

route add -net 192.168.1.0/30 enp0s3

SYSTEM B:

route add -net 192.168.1.0/31 enp0s3

SYSTEM C:-

route add -net 192.168.1.0/31 enp0s8

Now let's check our setup works properly!

Let's ping from system A to B and C

# ping 192.168.1.2

#ping 192.168.1.3

Both are pingable!

Let's ping from system B to C

#ping 192.168.1.3

Now we cant ping to C!!!!!

Let's check from system C

# ping 192.168.1.2

We are not able to ping to system b from c!

Our final setup is ready! System A can ping to B and C but these cant ping each other!!!!!

Thank you !!