Exam 12: Firewalls

The primary role of the personal firewall is to deny unauthorized remote access to the computer. A)VPNs B)Proxys C)Firewalls D)SOCKS

SOCKS is defined in _________ as "a framework for client server applications in both the TCP and UDP domains to conveniently and securely use the services of a network firewall".

A ________ firewall controls the traffic between a personal computer or workstation on one side and the Internet or enterprise network on the other side.

A _________ firewall configuration involves stand alone firewall devices plus host based firewalls working together under a central administrative control.

Available in many operating systems or provided as an add on package, a ________ is a software module used to secure an individual host and also filters and restricts the flow of packets.

A _________ consists of a set of computers that interconnect by means of a relatively unsecure network and that make use of encryption and special protocols to provide security.

Packet filter firewalls examine upper layer data therefore they can prevent attacks that employ application specific vulnerabilities or functions.

Between an internal firewall and an external firewall are one or more networked devices in a region referred to as a _________ .Systems that are externally accessible but need some protection are usually located in this area.

The firewall cannot fully protect against internal threats.

A _________ firewall applies a set of rules to each incoming and outgoing IP packet and then forwards or discards the packet.

A ________ is a single firewall device between an internal and external router.The firewall may implement stateful filters and/or application proxies.This is the typical firewall appliance configuration for small to medium sized organizations.

_________ firewalls include personal firewall software and firewall software on servers.Such firewalls can be used alone or as part of an in-depth firewall deployment.

A stateful packet inspection firewall reviews the same packet information as a packet filtering firewall but also records information about TCP connections.

Packet filters tend to be more secure than application level gateways.

Typically serving as a platform for an application level or circuit level gateway, a ________ is a system identified by the firewall administrator as a critical strong point in the network's security.

The four general techniques that firewalls use to control access and enforce the site's security policy are: service control, direction control, user control, and __________ control.

A ________ is a single router between internal and external networks with stateless or full packet filtering.This arrangement is typical for SOHO applications.

The external firewall adds more stringent filtering capability in order to protect enterprise servers and workstations from external attack.

A _________ packet firewall tightens up the rules for TCP traffic by creating a directory of outbound TCP connections.There is an entry for each currently established connection and the packet filter will now allow incoming traffic to high numbered ports only for those packets that fit the profile of one of the entries in this directory.

The iTunes Music Sharing inbound service is port number ________ .