We recently upgraded to ASDM 6.1 and IOS 8.04 on a ASA 5520. I noticed while poking around the ASDM that under Firewall-->Advanced-->AntiSpoofing that the interfaces say that Antispoofing is not enabled.
I thought on these Cisco ASA's that antispoofing is on by default. Is this feature related to something else. Any information would really help.