I have a ASA 5520，the version is 7.0。
I want to know ASA support port mirror？I want to connection in a audit equipment on the G0/2。
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I never tried or tested it but I think you can.
Please follow this link.
*Please vote my reply if it's helpful.
1- that's what span port on the switch is designed for
2- if option #1 is not available, you can put an "in-line" from the ASA and tap the data to wherever you want it. Netscout has them (formerly Simena)
Just one to mention something I discovered a few days ago, and that is the ASA supports Port-mirroring but only on the asa 5505
Span/mirror port on the ASA 5505 - The ASA 5505 has an eight port Ethernet switch in it making it unique among the ASA product line. Like all Cisco switches, this one also supports traffic span to allow you to capture packets and send them to a destination switchport for analysis.
switchport monitor source_port [tx | rx | both]
Asa5505(config)# interface ethernet 0/4
Asa5505(config-if)# switchport monitor ethernet 0/0
Asa5505(config-if)# switchport monitor ethernet 0/1
You always learn something new
Hope I could help
I just discovered this last week but based on the information over the internet you should be able to do it,
I will run a lab myself and see if that happens