You need to recommend some critical network related services by addressing the following requirements: 1. Access control is required to disable/block unwanted inbound/outbound traffic and potential network attacks. Please discuss a viable solution, including how to deploy it and how it works.

Case scenario

Background ICTech is a specialised service provider to domestic customers. The company has its Head Office on the Sunshine Coast occupies three floors in a building, hosting about 15 employees on each bottom from a business department, including Administration, Sales and Support. In addition, it has a Production office in Moreton Bay, hosting a team of 10 local employees in a leased office. Every employee is assigned a desktop computer, and there are about ten laptops available for hire in the Head Office. The ICTech senior management team expect the company to proliferate, forcing the company to form two new departments (20 employees each) and thus lease two floors in a building in Brisbane. The company also runs three (3) servers in its Head Office. Two (2) of them run services to support various internal business functions, including file sharing, job tracking, Payroll, etc. All staff frequently need to visit these servers during their daily work. The other (1) server host the website and online sales platform, which are open to the public and customers. Your task is to help design a network for ICTech which meets their current and foreseeable future needs. The aim is to enable easy and efficient connections between all devices, offices, staff, and customers. Network Needs Analysis Each department at each location should maintain an individual network, while all the departments should be able to communicate with each other and the internal servers and access the Internet. Private IPv4 addresses are to be used for the internal networks. To simplify the discussion, each subnet should use a separate private network address from the 172.30.0.0/23 range. For each subnet, the first available IP address is to be allocated to its default gateway. ICTech deploys a border router at each office location (Sunshine-R and Moreton-R, and Brisbane-R for the forthcoming location) which are connected to their ISP's router (ISP-R). In response to ICTech's enquiries regarding their IPv4 needs, their ISP has advised that they can continue using their current block of public IPv4 addresses, that is 190.191.192.128/26