GL-9
Cisco Router and Security Device Manager Version 2.2 User’s Guide
OL-4015-08
Glossary
E
EAPoUDP Extensible Authentication Protocol over User Datagram Protocol. Sometimes
shortened to EOU. The protocol used by a client and a NAD to perform posture
validation.
Easy VPN A centralized VPN management solution based on the Cisco Unified Client
Framework.A Cisco Easy VPN consists of two components: a Cisco Easy VPN
Remote client, and a Cisco Easy VPN server.
ECHO See ping, ICMP.
EIGRP Enhanced Interior Gateway Routing Protocol. Advanced version of IGRP
developed by Cisco Systems. Provides superior convergence properties and
operating efficiency, and combines the advantages of link state protocols with
those of distance vector protocols.
encapsulation Wrapping of data in a particular protocol header. For example, Ethernet data is
wrapped in a specific Ethernet header before network tran sit. Also, when
bridging dissimilar networks, the entire frame from one network is simply
placed in the header used by the data link layer protocol of the other network.
encrypt To crytographically produce ciphertext from plaintext.
encryption Application of a specific algorithm to data so as to alter the appearance of the
data, making it incomprehensible to those who are not authorized to see the
information.
enrollment proxy
host
The proxy server for a certificate enrollment server.
enrollment URL The enrollment URL is the HTTP path to a certification authority (CA) that your
Cisco IOS router should follow when sending certificate requests. The URL
includes either a DNS name or an IP address, and may be followed by a full path
to the CA scripts.