Client-Server architecture

Wireless LANs are less secure than wired LANs because the signals travel through air with many types of interceptions. For the FTD Enterprises, STAR topology is more suitable because all stations are connected by cable (or wireless) to a central point where the central node will act as a switch. WANs can be used to connect different STAR topology hence providing services for both the employees as well as the head office. In this LAN architecture the nodes are connected to a common central hub or switch with the help of dedicated link.

It is becoming very common network layout used today which connects point-to-point to a single central location. Other layouts such as BUS, RING, TREE and Mesh can also be used but can become venerable compared to STAR topology. However, STAR needs more cables compared to BUS but is very reliable for example, if one cable is cut only single pc is affected. Other advantages with STAR topology are that it is easy to install both cable and wireless and the network is easily changeable without affecting the entire system. The most important benefit of using Star is that it is easy to detect errors and faults.

The disadvantages of STAR topology are that it requires more cable length than a linear topology. The hub that is connected needs to be protected in such a way that the nodes do not fail if the hub fails and it can be little expensive compared to linear bus topologies. The main architecture suitable for FTD is Client-Server architecture. It consists of a group of user-oriented PC called Clients which are connected to a Server. The FTD employee’s computers will be connected to a main server using both cable and wireless.

The employers and the managers will both act as a client and will be able to access the server according to their privilege. A server machine which is fast, more memory and disk space will maintain the all the information related to the company. In this architecture using a relational database management system (DBMS), FTD queries can answer any information form anywhere by directly communicating with the Server at the same time reducing network traffic. This system can be used to backup critical information which is vital for both the system and the end-user.

It uses three tires such as User Interface which connects with the middle tire (Process Management) to access the data containing in the third tire (Database management). The communication between the tires helps to easily monitor the entire system to seek out the main security issues related with the system. In a centralized system, all the functions are concentrated in the system hub where maintaining and updating information can be executed from all points in the system. The weakness of the system is when the system’s hubs break down in case of a disaster affecting the system and its peripheral components.

The main advantages of the Client/Server architecture are that it is centralized where it can access its information from the server. Therefore, if there are any security issues it can be dealt with using the server. It is also flexible and scalable enough for new technologies to integrate with the system. The architecture also helps the system to be interoperable making all components work together in a synchronized fashion. The main security issue such as data access must be implemented in such a way that the privilege given to the FTD employees and the head office is controlled and manipulated.

Hence, it is possible to implement a sophisticated system using the proposed topology and architecture. Controlling the web-browsing habit such as browsing illegal or unwanted web sites need also to be controlled, hence providing user access to email, web sites using password and encryptions is essential and is possible using the proposed system. Keeping off the malicious users from accessing valuable information and other external information that can be used against the company needs to be taken under consideration.

Sending emails and other attachments must be allowed according to hierarchy of access permissions. As for disadvantage of Client/Server architecture is that if the dependability where the whole system is dependent on the server. The star topology is the most widely used topology but centralized hub could create problems. If the hub is disabled then the clients that are connected will not be able to access any information. This topology can also be costly because of the number of cables used to connect the clients with the hub.

Other disadvantages are that it is sometimes difficult to implement compared to other topology. However, one of the advantages of using Star topology is that it can be expandable with out disrupting the whole network. If cables fails or disconnected only single client is affected. Other advantage is that using this topology it is possible to easily troubleshoot and isolate errors or faults in the system. As mentioned before site STAR topology is more suitable because all stations are connected by cable (or wireless) to a central point where the central node will act as a switch.

WANs can be used to connect different STAR topology hence providing services for both the employees as well as the head office. In this LAN architecture the nodes are connected to a common central hub or switch with the help of dedicated link. It is becoming very common network layout used today which connects point-to-point to a single central location. Other layouts such as BUS, RING, TREE and Mesh can also be used but can become venerable compared to STAR topology. However, STAR needs more cables compared to BUS but is very reliable for example, if one cable is cut only single pc is affected.