This network is built with single class C IP address $200\mathrm{.}0\mathrm{.}0\mathrm{.}0/24.$ Through VLSM

network is divided in following sections:$-$

Development $(200\mathrm{.}0\mathrm{.}0\mathrm{.}0/25)$

Production $(200\mathrm{.}0\mathrm{.}0\mathrm{.}128/26)$

Management $(200\mathrm{.}0\mathrm{.}0\mathrm{.}192/27)$

Server $(200\mathrm{.}0.\frac{0\mathrm{.}224}{28})$

Routers are running RIVv$2$ or OSPF routing protocol.

In this network, at this moment all sections are connected with each other. Users are able

to access all resources from other sections as well as their own. You are hired to secure

this network.

This network has following security requirements.

Section level requirement

Development section should be able to access only the production section, it

should NOT be able to access the management section and server section.

Production section should be able to access only the development section. It

should NOT be able to access the management section and server section.

User level requirement

One user $($PCO$)$ from the development section should not be able to access

anything except its own section.

One user $($PC$2)$ from the production section should also be able to access the

management section but NOT the server section.

One user $($PC$3)$ from the production section should be able to access the server

section but not the management section.

One user $($laptop$0)$ from management section should be able to access only Server

section NOT the development section and production section.