Firewall

Both firewalls and intrusion detection and prevention systems are used extensively in network security, including protecting the network perimeter. They will be configured based on where they are located and the security requirements within that security zone.
Write a 3-4 page paper in which you:
1. Describe the different types of firewalls.
2. Analyze how the security requirements within different security zones will impact the firewall configurations.
3. Describe the purpose of a intrusion detection system, intrusion prevention system, and intrusion detection and prevention system.
4. Assess the effectiveness of these devices in protecting the perimeter of the network. Include an explanation of what they do protect and what they do not protect

Firewall and intrusion detection and prevention systems are vital in protecting resources and assets in todays technology age. Firewalls provide security by blocking and monitoring the transmitted electronic communications. There are four common firewalls such as:
1. Packet Filtering-
In packet filtering software examines the header portion of the packet and determines whether it will be allowed or denied access to the port it is attempting to gain access to. If the packet is denied it is dropped and the information is never transmitted to the end user. If the packet is accepted the packet goes through and the end user receives it. Packet filtering is a relatively inexpensive way to protect your PC by using a firewall. Linux has packet filtering built into the system itself which takes out some of the expenses when installing a firewall and intrusion detection system.
2. Circuit Level Gateway-
In circuit level gateway the security is at the transport layer. This type of firewall is implemented and governed by using the SOCKS protocol. SOCKS was designed by David