Hello Meraki Team, Nice to meet you ! A quick information about Meraki Firewall. I work on MX84 and MX67 Firewall and i am a little suprised about the behaviour of Meraki firewall. I explain my problem :   I have 2 vlans and the deny all rule at the end of the configuration is blocking icmp flow between the 2 vlans => ok it is working fine. I leave the ping working between the 2 computers that are in the 2 different vlans. Above the deny rule i create an allow rule to open flow from vlan 10 to vlan 20 => Ok the flow is working. The ping between 2 computer is still working and i decide to delete the previous allow rule. => logically the icmp flow must be interupted between my 2 computer because the deny all rule must apply. BUT it is not the case. => ping is still working and i must interupt the active ping, wait 5 minutes and reload the ping to see that the flow is deny.   Do you have any information about this Meraki firewall behaviour ? In 20 years in IT it is the first time in see that. With other firewall product like Watchguar or fortinet the icmp flow is deny instantly when the allow rule is delete.   Many thanks !      ... View more