Greetings. We have a Cisco ASA 5512-X. The network has been slow today. Pings to known sites are 1500-3500ms, when usually 30-50 or so.
I noticed a short while ago that our ASA is encountered 2,500 continuous possible scanning attacks. I'm relatively new to security, but can get around ASDM.
Can anyone guide me to determine the source of the attacks and how to block the IP / range on the Cisco ?