Cisco OL-4015-08 User Manual page 650

Glossary
DMVPN
single DMVPN
DMZ
DN
DNS
domain name
DRAM
DSLAM
DSS
dynamic routing
Cisco Router and Security Device Manager Version 2.2 User's Guide
GL-8
Dynamic multipoint virtual private network. A virtual private network in which
routers are arranged in a logical hub and spoke topology, and in which the hubs
have point-to-point GRE over IPSec connections with the hub. DMVPN uses
GRE and NHRP to enable the flow of packets to destinations in the network.
A router with a single DMVPN configuration has a connection to one DMVPN
hub, and has one configured GRE tunnel for DMVPN communication.The GRE
tunnel addresses for the hub and spokes must be in the same subnet.
demilitarized zone. A DMZ is a buffer zone between the Internet, and your
private networks. It can be a public network typically used for Web,
E-Mail servers that are accessed by external clients on the Internet. Placing these
public access servers on a separate isolated network provides an extra measure
of security for your internal network.
Distinguished Name. A unique identifier for a Certification Authority customer,
included in each of that customer's certificates received from that Certification
Authority. The DN typically includes the user's common name, the name of that
user's company or organization, the user's two-letter country code, an e-mail
address used to contact the user, the user's telephone number, the user's
department number, and the city in which the user resides.
Domain Name System (or Service). An Internet service that translates domain
names, which are composed of letters, into IP addresses, which are composed of
numbers.
The familiar, easy-to-remember name of a host on the Internet that corresponds
to its IP address.
dynamic random access memory. RAM that stores information in capacitors that
must be periodically refreshed.
digital subscriber line access multiplexer.
digital signature standard. Also called digital signature algorithm (DSA), the
DSS algorithm is part of many public-key standards for cryptographic
signatures.
Routing that adjusts automatically to network topology or traffic changes. Also
called adaptive routing.
FTP and
OL-4015-08