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Cisco SCE 8000 10GBE Software Configuration Guide
OL-30621-02
Chapter 6 Global Configuration
OS Fingerprinting and NAT Detection
Configuring OS Fingerprinting
By default, the OS fingerprinting feature is disabled. When OS fingerprinting is enabled, you can also
configure the following OS fingerprinting parameters:
•
Sampling window—How long flows from a subscriber are fingerprinted
•
Sampling interval—Interval between OS fingerprinting sampling windows
OS fingerprinting is done for "sampling window" seconds every "sampling interval" minutes.
•
NAT detection window—Time period within which detecting multiple operating systems for the
same subscriber or IP address triggers NAT identification
•
OS flush time–Time interval after which OS information is flushed from the system
•
Signature file—Name of OS fingerprint signature file
•
Scan port—Port used for opening OS fingerprinting flows
•
GX reporting—Enable sending subscriber OS information in Gx messages
SUMMARY STEPS
1.
enable
2.
configure
3.
interface linecard 0
4.
os-fingerprinting
5.
(Optional)
os-fingerprinting sampling window
window
interval
interval
6.
(Optional)
os-fingerprinting
NAT-detection-window
time
7.
(Optional)
os-fingerprinting os-flush-time
time
8.
(Optional)
os-fingerprinting signature-file
filename
9.
(Optional)
os-fingerprinting scan-port
port#
10.
(Optional)
os-fingerprinting gx-report
DETAILED STEPS
Command
Purpose
Step 1
enable
Example:
SCE> enable
Enables privileged EXEC mode. Enter your password
when prompted.
Step 2
configure
Example:
SCE# configure
Enters global configuration mode.
Step 3
interface linecard
Example:
SCE(config)# interface linecard 0
Enters interface linecard configuration mode.