The company president has requested a viable solution to implement the recently purchased new building (B2) network to the existing network in a building (B1) that is 500 yards away. It was requested that the new employees that will be located in B2 have full access to all network resources in B1 including internet access. The new building will be used for research and development. The information processed in this building needs be protected and segmented from employees in B1. It was also requested that B1 employees have limited access to resources in B2. B1 is using a Cisco edge router as both the firewall and router. There are several factors that I would consider first before making a recommendation: 1. How many end users are expected to occupy and the rate of growth 2. Does the connection between B1 and B2 have to be encrypted 3. How many VLAN’s is needed if any for the new building With taking account of the aforementioned considerations I would choose a secure Virtual Private Network connection between B1 and B2 utilizing between to routers. There should be at least VLAN connection from B2 extending into B1. This VLAN connection will be protected over the VPN connection while IPsec is enabled. Inter-VLAN routing will be configured on the inside switches located in B1 so that the B2 network traffic is segmented from B1 production data. All relative switches in the network will be configured for trunking so that all VLAN data will be able to traverse throughout the network domain. Security mechanisms like port security will be enabled on the network switches for an added layer of security. In order to complete this type of connection from B2 to B1 a high powered switch for instance like a Catalyst 6500 series that has laye... ... middle of paper ... ...AN data to propagate to all relative switches with having to create separate VLAN’s on all of them. VTP or VLAN trunking protocol reduces administration on the switched network. VLAN configuration data is shared through the VTP. This data is encapsulated between the switches therefore B2 data will not be accessible to view by B1 employees. Port security and ACL will be configured on the switches. Port security allows for exclusivity to granted to specific nodes by the MAC address to a switchport on a network switch. If a device is plugged into the network drop that is configured for a different device then that port will automatically be disabled. VPN, VLAN, VTP, trunking, nating and port security are the methods I recommend to fulfill the president’s request. These protocols ensure the establishment, segmentation and security of communication between B1 and B2.
When controlling communications of multiple devices are outlined on defined procedures. Arbitration structures are essential in the control of the bus communications in the presence of multiple devices.
“The Spanning Tree Protocol (STP) is an older network protocol that ensures a loop-free topology for any bridged Ethernet local area network. The basic function of STP is to prevent bridge loops and the broadcast radiation that results from them.”
Security of the companies data is one of the most important components which allows the business to perform its day to day operation using various networking devices, services that absolutely needs to be protected from intruders. Some of these devices include online transactions, the exchange of data between users and clients both internal and external and external web data needs to be secured. There are several polices that would need to be configured such as a web sever and firewall configurations. However, with these configurations the first and most important task is to identify any vulnerabilities or loopholes in security within the company. The company has both LAN (Local Area Network) and WAN (Wireless Local Area Network) and a web sever. These resources need to be secured at all times from hackers or anyone else by implementing the appropriate security measures.
It is a network security measure used in computer networks to ensure that the secure network physically protected from other unprotected networks. This
The phrase virtual private network seems imposing, but a VPN boils down to special software in a client PC connecting across a corporate intranet or the Internet to special software in a dedicated box or a server in your server room. Encryption at both ends keeps data safe, and you can choose from several options for user authentication
Terrorism is a growing threat in modern times. Ultimately all activities need co-ordination and such co-ordination is facilitated by communication. Terrorist activities need communication as well as any other activity. In order to avoid getting traced, such communication can be done over secure lines on open public networks or hacked private networks.
This proposal is for a small office that will have users who are connected by Wi-Fi or cable. The network will include devices and resources that is shared among all the users. The network will need to have security measures in place to protect the entire network and keep the wireless access secure and available only to employees of the company.
...rely over unsecure internet. As dynamic spoke to spoke tunnels can be created, traffic does not have to travel every time through the hub, which reduces bandwidth utilization and the amount that CPU has to process. DMVPN can provide highly scalable and hierarchical topology support using phase 3. It is very useful when new branch site comes up, as there is no need to add the configuration on hub routers. Due to high throughput at hub router, DMVPN is ideal for VoIP, because VoIP requires low latency and higher throughput. However, DMVPN is exclusive to the Cisco and cannot be implemented on the non-Cisco routers, further, QOS policies cannot be configured for spoke to spoke tunnels. In spite of having few shortcomings, usefulness of DMVPN suppress its disadvantages, and it is the most cutting-edge tool that should be used to connect remote sites of an organization.
have the capability to let you talk with someone across the nation or let you
LANs systems can be defined and connected in many different ways. This is the reason for the standardization for every one can have a common ground to start from. “The LANs described Herein are distinguished from other types of data networks in that they are optimized for a moderate size geographic area such as a single office building, warehouse, or a campus. The IEEE 802 LAN is a shared medium peer-to-peer communications network that broadcasts information for all stations to receive. As a consequence, it does not inherently provide privacy. The LAN enables stations to communicate directly using a common physical medium on a point-to-point basis without any intermediate switching node being required. There is always need for an access sublayer in order to arbitrate to access to the shared medium. The network is generally owned, used, and operated by a single organization. This is in contrast to Wide Area Networks (WANs) that interconnect communication facilities in different parts of a country or are used as a public utility. These LANs are also different from networks, such as backplane buses, that are optimized for the interconnection of devices on a desk top or components within a single piece of equipment.”(IEEE 802 Standard 1990) That is the standard definition for LANs by Institute of Electrical and Electronics Engineer committee 802. They are the committee used to set the standard in workmanship and operations for technicians that set-up and perform maintenance on LANs systems. And through all the technical words what they are trying to say is a LAN is a small area network that distributes information among computer in a small work environment unlike WANs that distribute information across global areas.
ABSTRACT : This paper describes the basic threats to the network security and the basic issues of interest in designing a secure network. it describes the important aspects of network security. A secure network is one which is free of unauthorized entries and hackers. INTRODUCTION
3. The router rejects any application traffic originating from the inside unless it came from the application gateway.
United States Executive Office of the President. (2009). Cyber space policy review: Assuring a Trusted and Resilient Information and Communications Infrastructure. (pp. 1-38). Retrieved from http://www.whitehouse.gov/assets/documents/Cyberspace_Policy_Review_final.pdf
Alice wants to send the information to Bob through the secured channel. The information transmitted from Alice to Bob is maintained confidential till it reaches the destination.
Network management planning and security planning involves identifying the best and most appropriate systems and hardware that the firm can use to better manage network and plan security systems. Therefore, the management required me to examine the best software and hardware systems in the market place that the company can adopt to enable it to manage the network and security. The management required me to advice on the implementation procedure of various plans that are going to be adopted. My responsibility also involved finding out or predicting the impact of the plan on the future operations. They required me to evaluate the challenges the company might face while adopting the changes in the network management plan and security plans.