Take a Threat Packet Capture

Enable the packet capture option in the security profile.

Some security profiles allow you to define a single-packet capture or an extended-capture. If you choose extended-capture, define the capture length. This will allow the firewall to capture more packets to provide additional context related to the threat.

If the action for a given threat is allow, the firewall does not trigger a Threat log and does not capture packets. If the action is alert, you can set the packet capture to single-packet or extended-capture. All blocking actions (drop, block, and reset actions) capture a single packet. The content package on the device determines the default action.

Select
Objects
Security Profiles
and enable the packet capture option for the supported profiles as follows:
Antivirus
—Select a custom antivirus profile and in the
Antivirus
tab select the
Packet Capture
check box.
Anti-Spyware
—Select a custom Anti-Spyware profile, click the
DNS Signatures
tab and in the
Packet Capture
drop-down, select
single-packet
or
extended-capture
.
Vulnerability Protection
—Select a custom Vulnerability Protection profile and in the
Rules
tab, click
Add
to add a new rule, or select an existing rule. Set
Packet Capture
to
single-packet
or
extended-capture
.
If the profile has signature exceptions defined, click the
Exceptions
tab and in the
Packet Capture
column for a signature, set
single-packet
or
extended-capture
.
(
Optional
) If you selected
extended-capture
for any of the profiles, define the extended packet capture length.
Select
Device
Setup
Content-ID
and edit the Content-ID Settings.
In the
Extended Packet Capture Length (packets)
section, specify the number of packets that the firewall will capture (range is 1-50; default is 5).
Click
OK
.

Add the security profile (with packet capture enabled) to a Security Policy rule.

Select
Policies
Security
and select a rule.
Select the
Actions
tab.
In the Profile Settings section, select a profile that has packet capture enabled.
For example, click the
Antivirus
drop-down and select a profile that has packet capture enabled.

View/export the packet capture from the Threat logs.

Select
Monitor
Logs
Threat
.
In the log entry that you are interested in, click the green packet capture icon in the second column. View the packet capture directly or
Export
it to your system.