Exam 4: Introduction to Firewalls

____ are commonly used to connect two companies networks over the Internet in a site-to-site configuration.

What are some of the advanced security functions provided by modern firewalls?

Ports numbers range from 0 to ____.

Firewalls can be used to host ____ to reduce server load and improve Web-site performance.

Packet-filtering firewalls examine every incoming packet _____ and can selectively filter packets.

In the OSI model, level 1 is the ____ layer.

A firewall may also help prevent some Trojan horses from leveraging the local network through unauthorized service ports called ____.

Port numbers come in two flavors: well-known ports and ____________________ ports.

A firewall is designed to prevent all attackers, viruses, and would-be intruders from entering a computer or computer network.

____________________ inspection blocks packets that are sent from an external computer that does not have a currently active connection to an internal computer.

Match each item with a statement below. -Consists of general information about the size of the packet, the protocol that was used to send it, and the IP address of both the source computer and the destination

How do firewalls help document what happens on a network?

What is User Datagram Protocol (UDP)?

A ____ firewall enables you to log passing traffic, protecting the whole network at one time.

Mobile devices such as laptops, PDAs, and smartphones blur the perimeter boundary.

Match each item with a statement below. -Function as an outbound network-level proxy.

A(n) ____________________ is an extended network that shares part of an organization's network with third parties.

Describe each generation of firewalls.

____ firewalls can be used to perform load balancing.

Firewalls provide ____ services by examining packet headers and allowing traffic that conforms to estalished rules to continue.