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Cisco ASA Series Firewall ASDM Configuration Guide
Chapter14 Configuring Inspection for Management Application Protocols
GTP Inspection
Default Level—Sets the security level back to the default.
IMSI Prefix Filtering
Configuration > Global Objects > Inspect Maps > GTP > IMSI Prefix Filtering
The IMSI Prefix tab lets you define the IMSI prefix to allow within GTP requests.
Fields
Mobile Country Code—Defines the non-zero, three-digit value identifying the mobile country code.
One or two-digit entries will be prepended by 0 to create a three-digit value.
Mobile Network Code—Defines the two or three-digit value identifying the network code.
Add—Add the specified country code and network code to the IMSI Prefix table.
Delete—Deletes the specified country code and network code from the IMSI Prefix table.
Add/Edit GTP Policy Map (Security Level)
Configuration> Global Objects > Inspect Maps > GTP > GTP Inspect Map > Basic View
The Add/Edit GTP Policy Map pane lets you configure the security level and additional settings for GTP
application inspection maps.
Fields
Name—When adding a GTP map, enter the name of the GTP map. When editing a GTP map, the
name of the previously configured GTP map is shown.
Description—Enter the description of the GTP map, up to 200 characters in length.
Security Level—Security level low only.
Do not Permit Errors
Maximum Number of Tunnels: 500
GSN timeout: 00:30:00
Pdp-Context timeout: 00:30:00
Request timeout: 00:01:00
Signaling timeout: 00:30:00.
Tunnel timeout: 01:00:00.
T3-response timeout: 00:00:20.
Drop and log unknown message IDs.
IMSI Prefix Filtering—Opens the IMSI Prefix Filtering dialog box to configure IMSI prefix
filters.
Default Level—Sets the security level back to the default.
Details—Shows the Parameters, IMSI Prefix Filtering, and Inspections tabs to configure additional
settings.