TMS zl Management and Configuration Guide ST.1.0.090213

B-9
Glossary
DoS Denial of Service. A type of attack that monopolizes a system's resources so
that other users cannot access it.
DR Designated Router. The only router in an OSPF area that floods LSAs to other
routers in the area.
DR priority The priority of a router during DR election.
drop out-of
sequence packets
An attack check performed by the TMS zl Module that drops packets that are
received out of order.
DSA Digital Signature Algorithm. A published standard used to create digital
signatures.
DSCP Differentiated Services Code Point. A field in an IP header that provides a
degree of QoS.
Dynamic Host
Configuration
Protocol
See DHCP.
dynamic routing As opposed to static routing, the creation of routes through frequently updated
messages that routers send to each other.
E
EF A Differentiated Services PBH protocol intended to provide for low delay, low
jitter and low loss services.
email forwarding The TMS zl Module sends logs to as many as three email addresses.
encapsulation The process of encapsulating one protocol within another. For example, L2TP
can be encapsulated by IPsec to secure tunnel data.
encapsulation
mode
The method IPsec uses to secure a VPN tunnel. The two encapsulation modes
are tunnel mode and transport mode.
encryption
algorithm
An algorithm that provides data privacy by transforming data into a new string.
DES, 3DES, and AES are encryption algorithms the TMS zl Module uses to
establish security associations (SAs).
endpoint A device that connects to a network, such as a desktop computer, a laptop
computer, or a server.