I have an Oracle Linux 9 in Oracle Cloud.
The routing from Zerotier is setup correctly.
allowDefault and allowDNS are enabled.
The route table on the node itself is correct as well.
This node however isn’t able to reach other any nodes on the ZT network, though other nodes with the same setting can access this Oracle node.
Is there any default security measure on Oracle Cloud that blocks the ZT route?
Thanks for the tip @sean.omeara
The iptables default to all accept for iNPUT.
I’ve added 9993/udp to firewalld and to the subnet NSG. Unfortunately, the result is still the same.
Is there another hint that you could give?