15-5
Cisco ASA Series Firewall CLI Configuration Guide
Chapter 15 Inspection of Database, Directory, and Management Protocols
GTP Inspection
GTP Inspection
The following sections describe the GTP inspection engine.
Note GTP inspection requires a special license.
• GTP Inspection Overview, page 15-5
• Defaults for GTP Inspection, page 15-6
• Configure GTP Inspection, page 15-6
• Verifying and Monitoring GTP Inspection, page 15-11
GTP Inspection Overview
GPRS provides uninterrupted connectivity for mobile subscribers between GSM networks and corporate
networks or the Internet. The GGSN is the interface between the GPRS wireless data network and other
networks. The SGSN performs mobility, data session management, and data compression.
Figure 15-1 GPRS Tunneling Protocol
The UMTS is the commercial convergence of fixed-line telephony, mobile, Internet and computer
technology. UTRAN is the networking protocol used for implementing wireless networks in this system.
GTP allows multi-protocol packets to be tunneled through a UMTS/GPRS backbone between a GGSN,
an SGSN and the UTRAN.
GTP does not include any inherent security or encryption of user data, but using GTP with the ASA helps
protect your network against these risks.
119935
Internet
Corporate
network 2
Corporate
network 1
Home PLMN
Gn
Gp
GRX
Roaming partner
(visited PLMN)
MS
SGSN GGSN
Gi
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