Cisco Systems OL-24201-01 manual Eap-Fast Pac, GL-10

Glossary

G

gateway	A network point that acts as an entrance to another network.
global system	Configuring TACACS+, EAP-TTLS, PEAP, and EAP-FAST runtime characteristics and generating
options	EAP-FAST PAC.

H

hash functions

header

host

Host-Based ID

HTTPS

hub

hybrid attack

hybrid encryption

(HTML

(HTTP

Used to generate a one way "check sum" for a larger text, which is not trivially reversed. The result of this hash function can be used to validate if a larger file has been altered, without having to compare the larger files to each other. Frequently used hash functions are MD5, SHA1, and SHA2.

The extra information in a packet that is needed for the protocol stack to process the packet.

Any computer that has full two-way access to other computers on the Internet. Or a computer with a web server that serves the pages for one or more Web sites.

Host-based intrusion detection systems use information from the operating system audit records to watch all operations occurring on the host that the intrusion detection software has been installed upon. These operations are then compared with a pre-defined security policy. This analysis of the audit trail imposes potentially significant overhead requirements on the system because of the increased amount of processing power which must be utilized by the intrusion detection system. Depending on the size of the audit trail and the processing ability of the system, the review of audit data could result in the loss of a real-time analysis capability.

Hypertext Transfer Protocol over Secure Socket Layer, or HTTP over SSL. HTTPS is a Web protocol developed by Netscape and built into its browser that encrypts and decrypts user page requests as well as the pages that are returned by the Web server. When used in the first part of a URL (the part that precedes the colon and specifies an access scheme or protocol), this term specifies the use of HTTP enhanced by a security mechanism, which is usually SSL.HTTPS uses port 443 instead of HTTP port 80 in its interactions with the lower layer, TCP/IP and an additional encryption/authentication layer between HTTP and TCP.

A network device that operates by repeating data that it receives on one port to all the other ports. As a result, data transmitted by one host is retransmitted to all other hosts on the hub. The central device in a star network, whether wired or wireless. Wireless access points act as hubs in wireless networks.

Builds on the dictionary attack method by adding numerals and symbols to dictionary words.

An application of cryptography that combines two or more encryption algorithms, particularly a combination of symmetric and asymmetric encryption.

Hypertext Markup Language. The set of markup symbols or codes inserted in a file intended for display on a World Wide Web browser page.

Hypertext Transfer Protocol. The protocol in the Internet Protocol (IP) family used to transport hypertext documents across an internet.

	User Guide for Cisco Secure Access Control System 5.3
GL-10	OL-24201-01