DRDO CSE 2022 Paper 2 | Question: 23 (a)

Question

Fill in the table below to create firewall rules that perform the actions described below on a local network with address $1.2.3.0$ (subnet $255.255.255.0).$ Assume that by default, all traffic will be accepted. You can refer to an entire network by its corresponding network address. You can use '*' to many 'any'.

1. Action A: Block all traffic to any server on the local network. Write as Rule $1.$

Answer 1

Action	Rule
Block all traffic to any server on the local network	Rule 1: Deny all traffic to 1.2.3.0/24

 

Note: In the above table, the network address is written as 1.2.3.0/24, which is a shorthand notation for specifying a network with a subnet mask of 255.255.255.0. The "/24" indicates that the first 24 bits of the IP address represent the network address, while the remaining 8 bits represent the host address.