IS3220 Project Part 2: Network Design Chris Wiginton, Jose Rosado ITT Technical Institute, Tampa FL Instructor: Sherman Moody 28 October, 2014 The best network design to ensure the security of Corporation Techs internal access while retaining public Web site availability consists of several layers of defense in order to protect the corporation’s data and provide accessibility to employees and the public. The private-public network edge is considered particularly vulnerable to intrusions, because the Internet is a publicly accessible network and falls under the management purview of multiple network operators. For these reasons, the Internet is considered an untrusted network. So are wireless LANs, which-without the proper …show more content…
Security is the heart of internetworking. The world has moved from an Internet of implicit trust to an Internet of pervasive distrust. In network security, no packet can be trusted; all packets must earn that trust through a network device’s ability to inspect and enforce policy. Clear text (unencrypted data) services represent a great weakness in networks. Clear text services transmit all information or packets, including user names and passwords, in unencrypted format. Services such as file transfer protocol (FTP), email, telnet and basic HTTP authentication all transmit communications in clear text. A hacker with a sniffer could easily capture user names and passwords from the network without anyone’s knowledge and gain administrator access to the system. Clear text services should be avoided; instead secure services that encrypt communications, such as Secure Shell (SSH) and Secure Socket Layer (SSL), should be used. The use of routers and switches will allow for network segmentation and help defend against sniffing Corporation Tech may want to have their own web or email server that is accessible to Internet users without having to go to the expense and complexity of building a DMZ or other network for the sole purpose of hosting these services. At the same time they may want to host their own server instead of outsourcing to an ISP (Internet Service Provider) or hosting company. Corporation Tech can use NAT (Network Address Translation) to
The entire building will share one internet access connection, which is a T-1 link from Verizon. A T1 link is one of the most common Internet access connections used by small businesses. T-1 Link is very fast, consistent and protected. It runs with a bandwidth speeds of 1.5Mb (WordPress.com). That speed is enough to achieve and complete essential business functions. Security is definitely a must and big concern that has to be taken into consideration when design networks, whether it is a business or a home network. Building a network in a university, we have to protect students and employee’s data as well as any intellectual property that college has on the servers and computers. Additional, there are other considerations for each lab, classroom, office, and the library including the capability to print and
We have been engaged in business for some time, and have been very successful, however we need to re-examine our network configuration and infrastructure and identify that our network defenses are still reliable, before we make any changes. We need to take a hard look at our current configuration of host, services and our protocols within our organization. Data from a large number of penetration tests in recent years show most corporate networks share common vulnerabilities. Many of these
NAT also known as Network Address Translation is a method that is utilized by network administrators in setting up IP addresses for network transmission. Network Address Translation allows a piece of network equipment such as a router to behave in such a way as a negotiator amidst public and private networks. Network Address Translation allows the ability for organizations and users at home to utilize an individual IP address that constitutes as a whole collection of computers operating an entire public domain. In the translations section of the Network Address Translation scheme, where the private and public addressing comes into play, it permits a computer or a set of computers that are already configured with inside addresses to be
In this modern day and age of computing, networks are a huge part of IT. It is important now more than ever that data sent over any network, whether it be a LAN (Local Area Network) or WAN (Wide Area Network; The Internet) is kept safe, private (when required) and uninterrupted in
The network diagram of Global Finance, Inc. (GFI) depicts the layout of the company’s mission critical systems. The company has two servers (Email and the Oracle database) which are used more than any of their other systems. GFI heavily depend on their network to be stable because of their financial systems that are running and any outage would negatively affect their operations and financial situation. Like all other business, customer satisfaction and the security of GFI’s network is crucial. In order to ensure their network and data is secure,
The firewall comes in hardware or software form and acts as a filter for all data
Gibson, S. (n.d.). GRC | Port Authority, for Internet Port 80 . Retrieved October 10, 2014, from https://www.grc.com/port_80.htm
Security is almost certainly the most difficult aspect of a network to perfect. It is important to have the correct procedures and components in place to make certain network security is being accounted for and addressed on any given network. The journal, “Future Generation Computer Systems” elaborates on this necessity for an information system. “Future Generation Computer Systems”, this component of a network is discussed thoroughly. “Essentially securing an Information System (IS), involves identifying unique threats and challenges which need to be addressed by implementing the appropriate countermeasures” (Dimitrios Zissis, Dimitrios Lekkas, 2012). This was achieved through configuring access lists as well as CHAP configuration on the routers connecting to the edge
The public facing servers used to connect the internal webserver to the customer website are contained within the demilitarized zone. Due to the demilitarized zones proximity to the wide area network, we will be taking a layered security approach. There will be a statefull firewall located between the router and the demilitarized zone. This firewall will protect the internal network via the LAN-to-WAN connection by performing in-depth packet inspection and closely
7. Which domain requires stringent access controls and encryption for connectivity to corporate resources from home?
Miller Inc. which is in the business of providing data collection and analytics services relies majorly on network security to keep its competitive advantage. This is because the customers that rely on the company's system trust that since there are sufficient security measures that have been ensured, they can store their data securely. Each of the functional models of the system should have sufficient security measures to ensure that complete security of the whole system architecture is achieved. The three functional modules are the backend module, services or operation module and customer access module. The major relationship between infrastructure and security comes in the role they play to ensure that the end user gets the data that they need when they need it and in the best way possible. Therefore for the three modules, there is a need to balance security with the right infrastructure.
A firewall is a system or group of systems that enforces an access control policy between two or more networks. The means by which this control is accomplished varies widely, but in principle, the firewall is a pair of mechanisms, one that blocks traffic and one that permits traffic. Some firewalls emphasize blocking traffic, while others emphasize permitting traffic. The most important thing to recognize about a firewall is that it implements an access control policy. If you don't know what kind of access you want to permit or deny, or you let someone else or some product configure a firewall based on judgment other than yours, that entity is making policy for your whole organization.
CISCO SYSTEMS INC., is one of the worldwide leaders in networking for the Internet, headquartered in San Jose, California, that manufactures, designs and sells networking equipment. Their unique hardware and software designs are used for connecting computers and PC networks, so the populace have trouble-free access to information. The company was originated by two computer scientists in 1984 from Stanford University in quest of a simpler way to connect different types of computer systems. They distributed its first product in 1986 and is now a global corporation, with over 74,042 employees in more than 115 countries. Cisco solutions today are the networking nuts and bolts for service providers, small to medium business and enterprise customers which includes corporations, government agencies, utilities and educational institutions. In major development, according to Cisco blogs, 2015 , "Cisco’s intent to acquire Maintenance Net, a privately held company providing a cloud-based software platform that uses data analytics and automation to manage and scale attach and renewals of recurring customer contracts "
Ied. A widely accepted alternative or at least complement to host-based security services is the firewall. The firewall is inserted between the premises network and the Internet to establish a controlled link and to erect an outer security wall or perimeter. The aim of this perimeter is to protect the premises network from Internet-based attacks and to provide a single choke
By using the helper address feature, a router can be configured to accept a broadcast request for a UDP service and then forward it as a unicast to a specific IP address.