Creating a Setup that can ping google but unable to ping Facebook from same system

In this article, I'll show you how does we can manipulate routing table of a system so that our system can ping to Google but unable to ping to the FaceBook or anyother website.

In this practicle I'm using RHEL-8 Operating System running on Oracle VirtualBox VM.

• Lets Find the Gateway ID of the system first.

• Now Lets find the IP Address of Google and FaceBook using nslookup command.

• Checking up my RHEL-8 OS is pinging to Google and FaceBook.

Here you can see that we are able to ping to Google and FaceBook both.

• Initially route table shows system can access any website in the world as you can see in this picture, which can be defined by destination ip (0.0.0.0)
• Now we use below command for manipulate the routing table.

route del -net 0.0.0.0   (For Deleting access point or disconnecting system  
                                         from outside world)


route add -net 172.217.166.0  netmask 255.255.255.0 gw 192.168.0.1 enp0s3 
  (Adding access point for the system to access only Google )

• As you can see access point to the internet world is deleted by using one of above command.

• Access point for Google server is created in routing table by using one the command given above step for adding new new IP.
• Now Lets's check wheter it is able to ping to Google and FaceBook.

By this way we can create a setup so that we can ping google but unable to ping Facebook from same system or operating system.

Thanks For Reading.....

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