we have a ASA one port of ASA connects to another customer firewall with a dedicated link. The other port is connected to internal network. We have a server on internal network which needs to ping the customer firewall (which is connected to the ASA). I have created a an access-list on inside network and allowed ICMP with source address of the server and destination of the customer firewall. so technically the ping will pass through ASA. The customer is saying that they can see the ping packet but the server is not receiving the reply. Routing is in place. Can someone suggest what might be the issue.
