Firewalls
Firewalls are network devices that are used to enforce security policies within a network; they can also be used to control the traffic between networks. The technology that was used to execute the firewall problem is Firewall Services Modules (FWSM). There are different types of firewalls that are in existence. They include packet-filtering firewalls, application and packet inspection firewalls. Each is discussed in the sections that follow. The first type of firewall is packet-filtering firewalls which use protocols, the destination and source of the packet, the port numbers of the source and destination, the time range, and the Differentiate ...
