I have found on the internet an article which describes how to enable traffic to enter and exit the same interface. The command is
hostname(config)# same-security-traffic permit intra-interface
I have four follow up questions:
- Why is this disabled by default on the Cisco ASA?
- What is the danger of enabling it?
- Is it disabled by default on the PIX firewalls as well?
- Is there a way to enable this behavior only on a specific interface or is this a global setting for all physical interfaces?