Essay on The Importance of Firewall for Internet Sercurity

Information security is a business requirement and also a legal requirement, subsequently firewalls are set up as security from viruses and backups are implemented to ensure no information is lost.

Also one has to know what type of network has been worked on, what network topologies the security is going on. The ring topology is going to be different from a bus or star topology. The hybrid is going to be different from the mesh topology or even wireless, this can be one of the hardest networks to protect. Also one has to think about size when it comes to building a network. Most people most of the time can’t tell the different between a big network and a small network. Big networks mostly consist of multiple several servers, computers and other device which connects to the network from the outside. All these devices need to be protected or secured when it’s connected to the internet and the network. Big networks are used mostly in bigger institution and organization where by 30 or more computers and server are used and are all linked to the network. Also speed is a factor when it comes to the internet networks but most importantly it’s important to bigger institutions and companies. Policy is one thing that most organization needs because if they want their network and the use of internet to be secured. Policies have to cover all aspect that the network is in. There has to be a lot of thought put in and all devices and how they connect to the outside world has to be considered. Small networks sometimes don’t have benefits and the down fall bigger networks have. Although speed is a factor, one

Firewall: A firewall is a software or hardware-based network security system that controls the incoming and outgoing network traffic by analysing the data packets and

Firewall is “a computer security program that blocks incoming network traffic based on certain predetermined criteria”. Firewalls have details logs, that can hold a wealth of information about the network to the forensics investigations. The firewall logs can also have details about the hardware failures. Successful/unsuccessful connection attempts, users added on, and any permissions changed. You can also find evidence on the backdoors.

By using the border, internal and host firewalls, this is what creates defense in depth. Because an attacker must defeat all of these devices in order to get into a company’s network to cause great damage (Boyle & Panko, 2015, pp.

“Security needs to be addressed as a continued lifecycle to be effective. Daily, there are new attack signatures being developed, viruses and worms being written, natural disasters occurring, changes in the organization workplace taking place and new technologies evolving, these all effect the security posture in the organization” (King, 2002). This being said, it is important to evaluate firewall and router rule sets more frequently. The possible threats against this policy include improperly configured network infrastructure which leads to a domino effect that could start with malicious programming which could end in data loss. Many of these threats may be unintentional as some users may not be aware of the risks and how their processes and procedures open the door for such attacks. For this reason alone, a more frequent evaluation is needed. This vulnerability could lead to data loss and the exposure of trade secrets, client lists and product design. The exposure of such information for most companies could mean a financial collapse as it no longer has the competitive edge that makes it the industry leader. While the likelihood of this threat is very high, “security risks to the network exist if users do not follow the security policy. Security weaknesses emerge when there is no clear cut or written security policy document. A security policy meets these goals:

A firewall protects networked computers from intentional hostile intrusion that could compromise confidentiality or result in data corruption or denial of service. It may be a hardware device or a software program running on a secure host computer. It must have at least two network interfaces, one of the network it is intended to protect, and one for the network it exposed

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.

Firewall is the first step to good defense from intruders or attackers. Firewall security has gotten to be big business, because it’s can be programmed to fit Kudler’s network and infrastructure form the inside out. For one reason a good firewall is essential in the verification of all authenticated user either internal or external. One of the top firewalls out there is” Barracuda’s powerful, best-of-breed security products secure your organizations threat vectors – email, web applications, remote access, web browsing, mobile Internet, and network perimeters whether on premises or in the cloud” (2015). Having one of these and maintaining the firewall is critical to Kudler’s Fine Foods

This is an open exposure due to the uncertainties of the internet. Controlling access to information systems and associated networks is necessary for the preservation of their confidentiality, integrity, and availability. Confidentiality assures that the information is not disclosed to unauthorized persons or processes. Any automated attacks or personal attack or attack to exploit the company secrets/statistics/data is the biggest threat to that may occur without the firewall.

This is a security system that was executed in software or hardware that is used to prevent unauthorised access to or from an intranet which is a private network, firewalls are frequently used during that time. They work by filtering packets of data as they enter or leave the network, on the other hand they apply security to some particular applications, firewalls are like the front line for defence, they make sure that everything is secure before they allow anyone to enter or leave the network, which can help keep not only the computers but also the organisations and information safe.

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.

In an e-commerce world, organizations are susceptible to hackers and intruders. Thus creating the information technology protection systems which is used to reduce the possibility of intrusions from occurring. Intrusions occur by uninvited outsiders (sometimes intruders can be internal users like employees) who try to access an organization’s information system using the internet with the intent to gain competitive advantage of some sort. Organizations depend on security technology to avoid loss from security breach, as well as to improve their efficiency and effectiveness. However, firewalls are also vulnerable to errors, and implementing a security technology comes with challenges and critical decisions that can possibly cause a financial burden on the organization if done without seriousness and commitment. “Information security is about managing risk, and managing risk is about discovering and measuring threats to information assets; and taking actions to respond to those threats” (Al-Awadi, & Renaud, 2007, p.3). This paper will discuss a few aspects that are involved with firewalls and intrusion detection systems.

There are various types of firewall both software and hardware. According to The National Institute of Standards and Technology (NIST) 800-10, firewalls is divided into three basic types, The Proxys firewall, Stateful Inspection firewall, and Packet Filtering firewall. The packet filtering firewall is the simplest type of firewall is a type of firewall which uses a list of firewall security rules which are able to restrict traffic based on Internet protocols, addresses and or port number. Utilizing this type of firewall management program web traffic allows for the flow of all web traffic to involve web base intrusion. In situations like this the user will need to also employ some form of intrusion prevention program along with their already established firewall security. This will help tell the difference between good and bad web traffic.

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