The new requirements are:
    In order to reduce cost whilst maintaining performance and security at both the Watford and Stevenage sites, the following changes will be introduced to the design:
o    Only one router will be required at each site. Extensive use will be made of VLANs, trunking between switches and inter-VLAN routing.
o    Trunk links between intermediary devices should use gigabit interfaces to maximise available bandwidth. Only the VLANs specifically required on each site should be allowed to traverse the trunk links.
o    All PCs in each site should obtain their full IP addressing information using DHCP configured on the respective sites router. On each subnet the last five IP addresses should not be allocated by DHCP.
o    The IP addressing scheme should remain the same as in assignment 1.
o    All PCs at the Watford site should be able to browse to the two web servers located in the server farm using HTTPS. However the PCs in the Management and Research subnets should also be able to browse the two web servers using HTTP.
o    All PCs in the Watford site that have been allocated IP addresses with an even number in the fourth octet should be allowed to ping the web servers. PCs with allocated odd numbers in the fourth octet of their IP addresses should not be able to ping the web servers.
You will need to configure an access control list (ACL) to meet the above two requirements.
o    Configure Port Address Translation on the edge router WATFORD_1. All network traffic originating from hosts on the Watford Site destined for the ISP network should be translated to a public address of your choice. This will be checked by pinging the external DNS server from a host on the Watford site then running show ip nat translations on the WATFORD_1 router. Port Address Translation is the most widely used version of NAT.