Firewalls
What is firewalls? Firewalls can be a hardware or software that provide protection to computers and networks. It was a choke point of control and monitoring the computer and networks. It provide restriction on network services for authorized traffic is allowed to access the services. It also is a auditing and controlling access of the devices to use the network resources, which can implement alarms for abnormal behavior. Normally, Firewalls provide 2 basic functions: 1) Packet filtering - Allows or denies transfer of packets based on security policy rules. 2) Application Proxy gateway - Provides network services to users within the firewall Firewall Features Logs access (authorized/unauthorized) in and out of a network Establish a Virtual Private Network (VPN) link to another computer Secures host Within the network to prevent attackers intrusions Filter inappropriate content such as executable mail attachments Securing Individual Users: Provides anti-virus ...