Security Solutions

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Appendix A: Glossary
E
EAP Extensible Authentication Protocol. A protocol that allows PPP to use authen-
tication protocols that are not part of the PPP suite. For more information,
see RFC 3748 at http://www.ietf.org/rfc/rfc3748.txt. See also CHAP and PAP
EAPOL EAP over LAN. An encapsulation method for transmitting EAP over local area
networks that is used by 802.1X.
EAP-GTC EAP with Generic Token Card. An implementation of EAP that uses a token
card for authentication. For more information, see RFC 3748 at http://
tools.ietf.org/html/rfc3748.
EAP-TLS EAP with TLS. An implementation of EAP that provides mutual certificate
authentication between client and server. For more information, see RFC 2716
at http://tools.ietf.org/html/rfc2716.
EAP-TTLS EAP with Tunneled TLS. An implementation of EAP in which the server
authenticates with a certificate, but the client authenticates (usually with a
password) using a different protocol sent over a secure tunnel. For more
information, see the Internet Draft at http://www3.ietf.org/proceedings/02jul/
I-D/draft-ietf-pppext-eap-ttls-01.txt.
eDirectory A hierarchical, LDAP-based directory service from Novell that can interoperate
with NetWare, AIX, HP-UX, Solaris, Windows, and Linux-based network serv-
ers.
EI See endpoint integrity.
endpoint A device that connects to a network, such as a desktop computer, a laptop
computer, or a server.
endpoint integrity The functionality that examines all endpoints that attempt to attach to the
network and prohibits unsafe or non-compliant endpoints from gaining
access. Endpoint integrity ensures that an endpoint that attaches to the edge
of the network is clean and meets configured criteria (for example, antivirus
program present and running with current signatures) before allowing it to
access network resources.
end-user screen NAC 800 message windows that appear on the end-user’s monitor; they show
information such as the endpoint’s test status and remediation steps, permitting
the user to download an agent, cancel testing, and get more information about
why a test failed.