Network Security

a.

The hosts in the Internal Network may have full access the DMZ 10.20.111.0/24. Access to the Internet must go through the HTTP Proxy Gateway only on port 443.

The diagram shows four networks and three firewalls. The "Untrusted PC", IP 10.10.111.30 is the only host in that network. Implement the following policies using iptables on Firewall A, B, and C. Clearly show which rules are for which Firewall. Stateful rules are required. The rules must allow only the packets specified and drop all other packets