Cisco Cisco Content Security Management Appliance M160 用户指南
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15-5
Cisco IronPort AsyncOS 8.0 for Security Management User Guide
Chapter 15 Troubleshooting
Step 3
Configure settings:
Step 4
Submit your changes. These changes take effect immediately and do not require a commit.
Table 15-1
Packet Capture Configuration Options
Option
Description
Capture file size limit
The maximum file size for all packet capture files in megabytes.
Capture Duration
Choose how long to run the packet capture:
•
Run Capture Until File Size Limit Reached. The packet
capture runs until the file size limit is reached.
capture runs until the file size limit is reached.
•
Run Capture Until Time Elapsed Reaches. The packet
capture runs until the configured time has passed. You can
enter the time in seconds (
capture runs until the configured time has passed. You can
enter the time in seconds (
s
), minutes (
m
), or hours (
h
). If you
enter the amount of time without specifying the units,
AsyncOS uses seconds by default. This option is only available
in the GUI.
AsyncOS uses seconds by default. This option is only available
in the GUI.
Note
The packet capture file is split into ten parts. If the file
reaches the maximum size limit before the entire time has
elapsed, the oldest part of the file is deleted (the data is
discarded) and a new part starts with the current packet
capture data. Only 1/10 of the packet capture file is
discarded at a time.
reaches the maximum size limit before the entire time has
elapsed, the oldest part of the file is deleted (the data is
discarded) and a new part starts with the current packet
capture data. Only 1/10 of the packet capture file is
discarded at a time.
•
Run Capture Indefinitely. The packet capture runs until you
manually stop it.
manually stop it.
Note
If the file reaches the maximum size limit before you
manually stop the packet capture, the oldest part of the file
is deleted (the data is discarded) and a new part starts with
the current packet capture data.
manually stop the packet capture, the oldest part of the file
is deleted (the data is discarded) and a new part starts with
the current packet capture data.
You can always manually stop any packet capture.
Interface
Select the network interface on which to run the packet capture.
Filters
Choose whether or not to apply a filter to the packet capture to
reduce the amount of data stored in the packet capture.
reduce the amount of data stored in the packet capture.
You can use of the predefined filters to filter by port, client IP, or
server IP (GUI only), or you can create a custom filter using any
syntax supported by the Unix tcpdump command, such as
server IP (GUI only), or you can create a custom filter using any
syntax supported by the Unix tcpdump command, such as
host
10.10.10.10 && port 80
.