ccna 200-301 foundations livelessons

ccna 200-301 foundations livelessons.Anti-virus products are host-based. These products are installed on computers and servers to detect and remove viruses. However, anti-virus products do not prevent viruses from entering the network, so network security practitioners need to be aware of the major viruses and keep track of security updates associated with emerging viruses.1.2.4.3 Worm MitigationWorms are more network dependent than viruses. For network security practitioners, mitigating worm hazards requires diligence and cooperation. The response to a worm infection can be broken down into four phases: containment > inoculation, quarantine, and treatment. oThe containment phase consists of limiting the spread of the worm infection to areas of the network that have already been affected. This requires separating the network into zones and segments in order to slow or stop the spread of the worm and prevent currently infected hosts from hitting and infecting other systems. The containment requirements14 Chapter 1 Modern Network Security ThreatsUse ACLs in the outbound and inbound directions on routers and firewalls at control points within the network.The inoculation phase can be conducted in parallel with the containment phase or after the containment phase. During the inoculation phase, allAll uninfected systems need to be patched with the appropriate vendor patch for the vulnerability. The inoculation process further deprives the worm of any attackable targets.Network scanners can help identify potentially vulnerable hosts. However, the mobile environment prevalent in modern networks poses a significant challenge. Laptopscomputers are often taken out of secure network environments and connected to potentially insecure environments, such as home networks. If systems are not properly