Kindly answer it correctly in a detailed form.

Thanks.

Internet IP address 192.168.1.2/24 Router DMZ Firewall 192.168.2.1/24 LAN Router 172.30.1.1/24 gateway IP address 10.1.1.1/24 www E-mail server FTP Server 192.168.2.32 server 192.168.2.29 192.168.2.25 Figure: An example of firewall configuration Figure Q3 illustrates a common network topography in which firewall provides a protective barrier between an untrusted Internet and internal networks including the DMZ (demilitarized zone) network. Design suitable packets filter rule sets to be implemented on the Firewall to satisfy the following policy requirements: Emails may be sent using SMTP in both directions through the firewall, but it must be relayed via the DMZ mail gateway. External email must be destined for the DMZ mail server Users inside may retrieve their email from the DMZ mail gateway using POP3. Users outside may retrieve their emails from the DMZ email gateway, but only if they use the secure POP3 protocol Web requests (both insecure and secure) are allowed from any internal user out through the firewall but must be replayed via the DMZ web proxy. Web requests (both insecure and secure) are allowed from anywhere on the Internet to the DMZ Web server. (Note that each rule shall include the following fields: Rule ID, Direction (inbound or outbound), Source IP, Source Port, Destination IP, Destination Port, Action)