Cisco ASA cannot ping any hosts on outside
Out of the box Cisco ASA firewall doesn’t permit ICMP traffic, that means the firewall permits ping traffic out but it won’t let the reply traffic to come inside.
The solution is to add “inspection icmp” to global policy map
ASA(config)# policy-map global_policy
ASA(config-pmap)# class inspection_default
ASA(config)# inspect icmp
ASA# write memory
After adding the above command, you will notice the change in ASA running-config and also ping any hosts on outside.
inspect dns preset_dns_map
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