An Effective Network Security Measure

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.

Networking is part of our everyday lives now. Weather is us using our phones, computer, using GPS for directions, watching 3D movies and TV’s or in our work environments. Network Security has become search a big issue since our day to day live started to be more involve with us. These problems involve in all type of shapes and forms where some of these issues are cyber attacks, physical attacks, or abuse of policies. People are really exposed due to the amount of internet activities we have going on in most of our networks. There are two fundamentally different when it comes to networking, the data networks and the synchronous network comprised of switches. With that being said there are also

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

through and what does not and can be customized to be more or less secure. Firewalls are

1.1.4.c Observe network configurations to verify that a firewall is in place at each Internet connection and between any demilitarized zone (DMZ) and the internal network zone, per the documented configuration standards and network diagrams.

Routers will have firewalls on them checking whether or not the information coming onto the network is allowed.

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.

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

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.

Firewalls are set up on computers to help protect computers and other devices from attacks from potentially harmful websites and other resources. Proxies are servers that act as a middle man for computers. They allow users to make indirect connections to other servers. The LAN-to-WAN domain is where the infrastructure connects to the Internet. Updates, firewalls and proxies will help to keep things running and help to keep it protected.

Protecting the network would be considered the first and primary line of defense as mentioned by Boyles. (2010) At present, the only way to ensure the network is protected is to deploy a firewall appliance that performs stateful packet inspection. Let us consider another analogy. A firewall could be considered the same as a security guard at the entrance to a public building. The guard's job is to ensure only those individuals employed at the facility are allowed entry into the building. Usually accomplished by inspecting the credentials of the employees’ to make sure that are who they say they are. Those individuals that cannot produce credentials or are not allowed entrance into the facility are turned away. This is very similar to what a firewall does; it inspected packets coming into the firewall to ensure that they match a state which is maintained in the state table of the firewall. If they do them the packets are allowed to continue, however, if they do not match a state in the state table, the packets are dropped. This is an important feature of firewalls. To ensure that packets cannot harm the network and the computers on the network and to protect from attacks that originate outside the network, is in fact, one of the best solutions that can be proposed to ensure the security of the computers and network used by library

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.

Many internet users are concerned about internet safety. A way to combat potential security breaches is to use a firewall. A firewall can be a hardware device or a program and it is used to filter any information that comes through any internet connection to your private network or computer system. Harmful information can be flagged by the firewall program and not be allowed to continue through. Firewalls use up to three different ways to control the information coming into and out of the network. The first method is called packet filtering. Packets are little manageable block of information that are then scrutinized through a set of filters. The ones that make it past the filters are sent along their way and anything else is immediately discarded. The next method is called proxy service which allows the firewall to retrieve requested information and send it to its destination. The last method is called stateful inspection or “stateful filtering”, which is more like packet filtering, only it doesn’t examine the whole packet (ISA, 2007). This method only examines certain parts of the individual packets and then compares it to a database of trusted information. A firewall can also be customized to block certain IP addresses and domain names and be configured to obey certain protocols. There are many different types of protocols depending on what it is protecting. For example, File Transfer protocol is

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

6. Configuration of Firewall Functionalities/Services and Rules (methodology) – process done via web GUI and configurations implemented on DHCP Settings, IP Masquerading, Firewall Settings and DNS Settings. These configurations would allow a certain host to connect to the internet even without a router or modem.