E-2
Catalyst 6500 Series Switch and Cisco 7600 Series Router Firewall Services Module Configuration Guide
OL-6392-01
Appendix E Acronyms and Abbreviations
CGI Common Gateway Interface.
chargen Character Generation—Via TCP, a service that sends a continual stream of
characters until stopped by the client. Via UDP, the server sends a random number
of characters each time the client sends a datagram. Defined in RFC 864.
CLI command-line interface.
conn Connection slot in the FWSM—Refer to the xlate command page in the Catalyst
6500 Series Switch and Cisco 7600 Series Router Firewall Services Module
Command Reference for more information.
CoS Class of Service.
CPU Central Processing Unit.
CR carriage return.
CTIQBE Computer Telephony Interface Quick Buffer Encoding.
DES Data Encryption Standard.
DHCP Dynamic Host Configuration Protocol.
DMZ demilitarized zone—A separate network behind the firewall that allows limited
access to outside users.
DNAT Dynamic Network Address Translation.
DNS Domain Name System (or Service)—Operates over UDP unless zone file access
over TCP is required.
DoS Denial of service.
EIGRP Enhanced Interior Gateway Routing Protocol—While the FWSM does not support
use of this protocol, you can set the routers on either side of the FWSM to use RIP
between them and then run EIGRP on the rest of the network before the routers.
EOBC Ethernet Out-of-Band Channel.
ESP Encapsulating Security Payload. Refer to RFC 1827 for more information.
EXEC privileged command mode, which displays the “#” prompt.
Firewall MC Firewall Management Center.
FTP File Transfer Protocol.
FWSM Firewall Services Module.
GRE Generic Routing Encapsulation—A tunneling protocol that does not use
encryption.
H.323 A collection of protocols that allow the transmission of voice data over TCP/IP
networks.
HTTP HyperText Transfer Protocol—The service that handles access to the World Wide
Web.
HTTPS HTTP over SSL.
Table E-1 Acronyms and Abbreviations (continued)
Abbreviation Description
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