SIP ALG is not implemented in Cisco Meraki hence it cannot be enabled\disabled. In my case the issue was on the voice services provider.  ... View more

That rule is malformed. ... View more

Thanks for keeping me inline @CptnCrnch  ... View more

AutoVPN works as follows. Each autovpn peer will try to reach two Meraki VPN registries. It announches it's own WAN IP and port it is using inside fields in packets going upstream So when a NAT exists between the MX and the registry the packet L3 and L4 header will be altered by having the public IP and port.  So the VPN registry knows what the private WAN IP and port is AND the public side.  This data gets forwarded to all the peers so they can attempt to form their VPN tunnels directly by using hole punching through the NAT. This can of course fail if there is an upstream router/firewall only allowing specific ports outbound.  In that case you have to manually select an UDP port and fill in your public IP.  That way all peers will attempt connection through that IP and port. ... View more

Hi @Mad_Dog_82,   I would suggest that your request the provider to configure a port forward on his router to your device using the ports 500 and 4500.   There's another solution that you may use, the Cisco Anyconnect that may be more simple to configure.   Hope that helps. ... View more