Antimalware Programs (39.5.7) Malware includes viruses, worms, Trojan horses, keyloggers, spyware, and adware. These are designed to invade privacy, steal information, damage the computer, or corrupt data. It is important that you protect computers and mobile devices using reputable antimalware software. Table 39-6 summarizes the types of antimalware programs that are available. Table 39-6 Types…

Packet Filtering Firewall Benefits and Limitations (39.5.4) Packet filtering firewalls are usually part of a router firewall, which permits or denies traffic based on Layer 3 and Layer 4 information, as shown in Figure 39-16. They are stateless firewalls that use a simple policy table lookup that filters traffic based on specific criteria, as shown…

Types of Firewalls (39.5.2)It is important to understand the different types of firewalls and their specific capabilities so that the right firewall is used for each situation. Packet Filtering (Stateless) FirewallPacket filtering firewalls are usually part of a router firewall, which permits or denies traffic based on Layer 3 and Layer 4 information, as shown…

Network-Based Malware Protection (39.4.4) New security architectures for the borderless network address security challenges by having endpoints use network scanning elements. These devices provide many more layers of scanning than a single endpoint possibly could, as shown in Figure 39-10. Network-based malware prevention devices are also capable of sharing information among themselves to make better-informed…

Host-Based Malware Protection (39.4.3)The network perimeter is always expanding. People access corporate network resources with mobile devices that use remote-access technologies such as VPN. These same devices are also used on unsecured, or minimally secured, public and home networks. Host-based antimalware/antivirus software and host-based firewalls are used to protect these devices. Antivirus/Antimalware SoftwareThis is software…