Cisco PIX 500 Series Configuration Manual page 1099

Provides IP fragment protection and performs full reassembly of all
FragGuard
reassembly of the remaining IP fragments that are routed through the security appliance.
File Transfer Protocol. Part of the TCP/IP protocol stack, used for transferring files between hosts.
FTP
G
gateway
GGSN
public data network or specified private IP networks.
Global configuration mode lets you to change the security appliance configuration. All user EXEC,
global
privileged EXEC, and global configuration commands are available in this mode. See also
configuration mode
mode,
Greenwich Mean Time. Replaced by UTC (Coordinated Universal Time) in 1967 as the world time
GMT
standard.
general packet radio service. A service defined and standardized by the European Telecommunication
GPRS
Standards Institute. GPRS is an IP-packet-based extension of
wireless, data communications
Generic Routing Encapsulation described in RFCs 1701 and 1702. GRE is a tunneling protocol that
GRE
can encapsulate a wide variety of protocol packet types inside IP tunnels, creating a virtual
point-to-point link to routers at remote points over an IP network. By connecting multiprotocol
subnetworks in a single-protocol backbone environment, IP tunneling using GRE allows network
expansion across a single protocol backbone environment.
Global System for Mobile Communication. A digital, mobile, radio standard developed for mobile,
GSM
wireless, voice communications.
GPRS tunneling protocol. GTP handles the flow of user packet data and signaling information
GTP
between the
of a
H
A protocol used for TCP signalling in applications such as video conferencing. See also
H.225
inspection
An ITU standard that governs H.225.0 session establishment and packetization. H.225.0 actually
H.225.0
describes several different protocols: RAS, use of Q.931, and use of RTP.
An ITU standard that governs H.245 endpoint control.
H.245
Suite of ITU-T standard specifications for video conferencing over circuit-switched media, such as
H.320
ISDN, fractional T-1, and switched-56 lines. Extensions of ITU-T standard H.320 enable video
conferencing over LANs and other packet-switched networks, as well as video over the Internet.
OL-12172-03
GPRS support node. A wireless gateway that allows mobile cell phone users to access the
privileged EXEC mode,
SGSN and GGSN
GPRS network.
engine.
command-specific configuration
in a GPRS network. GTP is defined on both the Gn and Gp interfaces
Cisco Security Appliance Command Line Configuration Guide
ICMP error messages and virtual
mode.
GSM networks and provides mobile,
Glossary
user EXEC
H.323 and
GL-7