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A firewall that communicates directly with a perimeter router and the internal network. Sreened Host
A ______________ host is a firewall that is screened by a router Screened
A ______________ architecture adds another layer of ecurity to the screened-host architecture. The external firewall screens the data entering the DMZ network. However instead of the firewall then redirecting the traffic to the internal network
With a _______________ two firewalls are used to create a DMZ
Sometimes a _______________ architecture is referred to as a single-tiered configuration and a __________________ is referred to as a two-tiered configuration. Screened-host
Masquerading or ___________ is a popular attacking trick in which the attacker modifies a packet header to have the source address of a host inside the network he wants to attack.
______________ routing means the packet decides how to get to its destination not the routers in between the source and destination computer
____________ is another name for locked-down (or hardended) Bastion Host
____________ refers to a device that has two interfaces: one facing the external network and the other facing the internal network Dual-Homed
In a ___________ firewall architecture a single computer with separate NICs are connected to each network. The computer's forwarding and routing must be disabled to the two networks are truly segrageted. Dual-Homed
______________ is a method of resolving hostnames to IP addresses so names can be used instead of IP addresses Domain Name Service (DNS)
What does DNSSEC stand for? Domain Name Service Security
Most directory service databases are built on the _______model and sue the _______ protocal to access the directory database X.500
A backbone that connects LANs to each other and LANs to WANs Metropolitan Area Network (MAN)
A standard for telecommunications transmissions over fiber-optic cables. The line is self-healing. All lines are redundant. Most MANs use these. Synchronous Optical Network (SONET)
A method of combining multiple channels of data over a single transmission path Multiplexing
____________ encapsulates data in fixed cells and can be used to deliver data over the SONET networks. Uses a fixed cell size and is a high-speed network technology. It uses a cell switching method. Asynchronous Transfer Mode (ATM)
A signaling protocol widely used for VoIP communication sessions Session Initiation Protocol (SIP)
A packet switched WAN protocol that features no error recovery Frame Relay
A Cisco-proprietary protocol that was released before 802.1X was finalized. It was significant security flaws and should not be used. It's based purely on passwords. Lightweight Extensible Authentication Protocol (LEAP)
Two services provided by ISDN Basic Rate Interface (BRI) and Primary Rate Interface (PRI)
BRI has ______ B channels that enable data to be transferred and ______ D channel that provides for call set up. Two
This protocol enables data voice
The _______ service is common for residual use and the _______ which has 23 B channels and 1 D channel is used more for corporations.
What are the three types of ISDN? BRI
IPSec can be configured to provide ____________________ in which an IPSec tunnel is tunneled through another IPSec tunnel.
____________ is not really a tunneling protocol but an encapsulation protocol. It encapsulates messages and transmits them over a serial line. Point-to-Point Protocol (PPP)
PPP has replaced ___________ Serial Line Internet Protocol (SLIP)
A Microsoft protocol that allows remote users to set up a PPP connection to a local ISP and then create a secure VPN to their destination. It can only work over the IP networks. Point-to-Point Tunneling Protocol (PPTP)
One of the least secure authentication protocols because passwords are sent in plain text Password Authentication Protocol (PAP)
IPSec works in which two modes? Tunnel and Transport
In the IPSec tunnel mode the __________ and ____________ are protected but in transport mode on the __________ is protected
Used the same was as PAP but is more secure. Uses a challenge/response method. Used by remote users routers
____________________ takes the total amount of bandwidth (spectrum) and splits it into smaller subchannels. It uses only a portion of the bandwidth available. Frequency Hopping Spread Spectrum (FHSS)
The __________ standard is a port-based network acces control that ensures a user cannot make a full network connection until he is properly authenticated. 802.1X
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